2025-08-28 07:21:01 +08:00
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<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>物理知识测验 - 万有引力定律</title>
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<style>
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* {
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margin: 0;
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padding: 0;
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box-sizing: border-box;
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font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
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}
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body {
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background-color: #f5f7fa;
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color: #333;
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line-height: 1.6;
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padding: 20px;
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}
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.container {
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max-width: 1000px;
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margin: 0 auto;
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background-color: white;
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border-radius: 12px;
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box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
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padding: 30px;
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}
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header {
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text-align: center;
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margin-bottom: 30px;
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padding-bottom: 20px;
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border-bottom: 1px solid #eee;
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}
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h1 {
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color: #2c3e50;
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margin-bottom: 10px;
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font-size: 28px;
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}
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2025-08-28 07:51:28 +08:00
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.difficulty-indicator {
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display: inline-block;
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padding: 5px 15px;
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border-radius: 20px;
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font-weight: bold;
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margin-bottom: 15px;
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}
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.difficulty-easy {
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background-color: #e8f5e9;
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color: #2e7d32;
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}
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.difficulty-medium {
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background-color: #fff8e1;
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color: #ff8f00;
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}
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.difficulty-hard {
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background-color: #ffebee;
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color: #c62828;
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}
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.quiz-info {
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color: #666;
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font-size: 16px;
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margin-bottom: 20px;
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}
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.question-section {
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margin-bottom: 30px;
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}
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.question {
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background-color: #f9f9f9;
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border-radius: 8px;
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padding: 20px;
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margin-bottom: 20px;
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transition: all 0.3s ease;
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}
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.question.hidden {
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display: none;
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}
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.question:hover {
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box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
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}
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.question-header {
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display: flex;
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justify-content: space-between;
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align-items: center;
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margin-bottom: 15px;
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}
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.question-number {
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font-weight: bold;
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color: #2980b9;
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font-size: 18px;
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}
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.question-points {
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background-color: #e3f2fd;
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color: #2980b9;
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padding: 3px 10px;
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border-radius: 12px;
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font-size: 14px;
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}
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.question-text {
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margin-bottom: 15px;
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font-size: 16px;
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line-height: 1.7;
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}
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.options {
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display: grid;
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grid-template-columns: 1fr 1fr;
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gap: 12px;
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margin-bottom: 15px;
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}
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@media (max-width: 768px) {
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.options {
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grid-template-columns: 1fr;
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}
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}
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.option {
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background-color: white;
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border: 1px solid #ddd;
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border-radius: 6px;
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padding: 12px 15px;
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cursor: pointer;
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transition: all 0.2s ease;
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display: flex;
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align-items: center;
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}
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.option:hover {
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border-color: #2980b9;
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background-color: #f0f7ff;
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}
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.option input {
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margin-right: 10px;
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}
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.option label {
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cursor: pointer;
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flex: 1;
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}
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.question-explanation {
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margin-top: 15px;
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padding: 15px;
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background-color: #e8f5e9;
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border-left: 4px solid #4caf50;
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border-radius: 4px;
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display: none;
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}
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.navigation-section {
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text-align: center;
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margin: 20px 0;
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padding: 15px;
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background-color: #f5f5f5;
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border-radius: 8px;
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display: none;
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}
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.submit-section {
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text-align: center;
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margin-top: 40px;
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}
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#submit-btn {
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background-color: #2980b9;
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color: white;
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border: none;
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padding: 12px 30px;
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border-radius: 6px;
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cursor: pointer;
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font-size: 16px;
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transition: all 0.2s ease;
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}
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#submit-btn:hover {
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background-color: #1e6fa5;
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transform: translateY(-2px);
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}
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#result {
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margin-top: 30px;
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padding: 20px;
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border-radius: 8px;
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display: none;
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}
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.result-header {
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font-size: 22px;
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font-weight: bold;
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margin-bottom: 15px;
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color: #2c3e50;
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}
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.score {
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font-size: 18px;
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margin-bottom: 20px;
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color: #333;
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}
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.correct-answers {
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background-color: #e8f5e9;
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color: #2e7d32;
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padding: 10px 15px;
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border-radius: 6px;
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margin-bottom: 10px;
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}
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.incorrect-answers {
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background-color: #ffebee;
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color: #c62828;
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padding: 10px 15px;
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border-radius: 6px;
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}
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</style>
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</head>
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<body>
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<div class="container">
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<header>
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<h1>物理知识测验 - 万有引力定律</h1>
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<div class="difficulty-indicator difficulty-medium">当前难度：中等</div>
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<div class="quiz-info">
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共15道题，分三个难度级别。完成当前难度后将根据您的表现推荐下一难度。
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</div>
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</header>
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<div class="question-section">
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<!-- 中等难度题目 (初始显示) -->
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<div class="question" data-difficulty="medium" data-question="1">
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<div class="question-header">
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<div class="question-number">中等难度 - 问题 1</div>
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<div class="question-points">20分</div>
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</div>
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<div class="question-text">
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下列关于万有引力定律的说法中，正确的是：
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</div>
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<div class="options">
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<div class="option">
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<input type="radio" name="mq1" id="mq1-a" value="A">
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<label for="mq1-a">A. 万有引力定律只适用于天体之间的相互作用</label>
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</div>
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<div class="option">
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<input type="radio" name="mq1" id="mq1-b" value="B">
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<label for="mq1-b">B. 两个物体之间的万有引力大小与它们距离的平方成反比</label>
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</div>
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<div class="option">
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<input type="radio" name="mq1" id="mq1-c" value="C">
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<label for="mq1-c">C. 万有引力的方向总是垂直于两个物体的连线方向</label>
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</div>
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<div class="option">
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<input type="radio" name="mq1" id="mq1-d" value="D">
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<label for="mq1-d">D. 万有引力常量G是牛顿通过实验测量得出的</label>
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</div>
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</div>
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<div class="question-explanation">
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<strong>正确答案：B</strong><br>
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解析：万有引力定律适用于宇宙中任何两个有质量的物体之间的相互作用，不仅限于天体，故A错误；根据万有引力公式F=G(m₁m₂)/r²，两个物体之间的万有引力大小与它们距离的平方成反比，故B正确；万有引力的方向总是沿着两个物体的连线方向，故C错误；万有引力常量G是卡文迪许通过扭秤实验测量得出的，故D错误。
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</div>
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</div>
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2025-08-28 07:51:28 +08:00
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2025-08-28 08:58:19 +08:00
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<div class="question" data-difficulty="medium" data-question="2">
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<div class="question-header">
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<div class="question-number">中等难度 - 问题 2</div>
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<div class="question-points">20分</div>
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</div>
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<div class="question-text">
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地球表面的重力加速度为g，若地球的质量不变，但半径变为原来的一半，则地球表面的重力加速度变为：
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</div>
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<div class="options">
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<div class="option">
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<input type="radio" name="mq2" id="mq2-a" value="A">
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<label for="mq2-a">A. g/4</label>
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</div>
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<div class="option">
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<input type="radio" name="mq2" id="mq2-b" value="B">
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<label for="mq2-b">B. g/2</label>
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</div>
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<div class="option">
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<input type="radio" name="mq2" id="mq2-c" value="C">
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<label for="mq2-c">C. 2g</label>
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</div>
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<div class="option">
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<input type="radio" name="mq2" id="mq2-d" value="D">
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<label for="mq2-d">D. 4g</label>
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</div>
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</div>
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<div class="question-explanation">
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<strong>正确答案：D</strong><br>
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解析：根据重力加速度公式g=GM/R²，其中G为万有引力常量，M为地球质量，R为地球半径。当地球质量M不变，半径R变为原来的一半时，新的重力加速度g'=GM/(R/2)²=4GM/R²=4g，故答案为D。
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</div>
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</div>
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<div class="question" data-difficulty="medium" data-question="3">
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<div class="question-header">
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<div class="question-number">中等难度 - 问题 3</div>
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<div class="question-points">20分</div>
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</div>
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<div class="question-text">
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人造地球卫星绕地球做匀速圆周运动，若轨道半径增大到原来的2倍，则卫星的线速度大小变为原来的：
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</div>
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<div class="options">
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<div class="option">
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<input type="radio" name="mq3" id="mq3-a" value="A">
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<label for="mq3-a">A. 1/2</label>
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</div>
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<div class="option">
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<input type="radio" name="mq3" id="mq3-b" value="B">
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<label for="mq3-b">B. 1/√2</label>
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</div>
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<div class="option">
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<input type="radio" name="mq3" id="mq3-c" value="C">
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<label for="mq3-c">C. √2倍</label>
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</div>
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<div class="option">
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<input type="radio" name="mq3" id="mq3-d" value="D">
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<label for="mq3-d">D. 2倍</label>
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</div>
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</div>
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<div class="question-explanation">
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<strong>正确答案：B</strong><br>
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2025-08-28 09:05:27 +08:00
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解析：根据万有引力提供向心力的公式GMm/r²=mv²/r，可得 satellite line speed v=√(GM/r)。当轨道半径r增大到原来的2倍时，新的线速度v'=√(GM/(2r))=v/√2，故答案为B。
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2025-08-28 08:58:19 +08:00
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</div>
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</div>
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<div class="question" data-difficulty="medium" data-question="4">
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<div class="question-header">
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<div class="question-number">中等难度 - 问题 4</div>
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<div class="question-points">20分</div>
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</div>
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<div class="question-text">
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两个质量分别为m和M的物体相距为r，它们之间的万有引力大小为F。若将它们的距离变为2r，质量分别变为2m和3M，则它们之间的万有引力大小变为：
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</div>
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<div class="options">
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<div class="option">
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<input type="radio" name="mq4" id="mq4-a" value="A">
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<label for="mq4-a">A. 3F/2</label>
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</div>
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<div class="option">
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<input type="radio" name="mq4" id="mq4-b" value="B">
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<label for="mq4-b">B. 3F/4</label>
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</div>
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<div class="option">
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<input type="radio" name="mq4" id="mq4-c" value="C">
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<label for="mq4-c">C. F/2</label>
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</div>
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<div class="option">
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<input type="radio" name="mq4" id="mq4-d" value="D">
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<label for="mq4-d">D. 2F/3</label>
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</div>
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</div>
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<div class="question-explanation">
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<strong>正确答案：A</strong><br>
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解析：根据万有引力公式F=G(mM)/r²，变化后的万有引力F'=G(2m·3M)/(2r)²=6GMm/4r²=3GMm/2r²=3F/2，故答案为A。
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</div>
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</div>
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<div class="question" data-difficulty="medium" data-question="5">
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<div class="question-header">
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<div class="question-number">中等难度 - 问题 5</div>
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<div class="question-points">20分</div>
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</div>
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<div class="question-text">
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关于开普勒行星运动定律，下列说法正确的是：
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</div>
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<div class="options">
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<div class="option">
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<input type="radio" name="mq5" id="mq5-a" value="A">
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<label for="mq5-a">A. 所有行星绕太阳运动的轨道都是正圆形</label>
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</div>
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<div class="option">
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<input type="radio" name="mq5" id="mq5-b" value="B">
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<label for="mq5-b">B. 行星在近日点的速率小于在远日点的速率</label>
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</div>
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<div class="option">
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<input type="radio" name="mq5" id="mq5-c" value="C">
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<label for="mq5-c">C. 所有行星的轨道半长轴的三次方与公转周期的二次方的比值都相等</label>
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</div>
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<div class="option">
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<input type="radio" name="mq5" id="mq5-d" value="D">
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<label for="mq5-d">D. 开普勒定律仅适用于行星绕太阳的运动</label>
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</div>
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</div>
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<div class="question-explanation">
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<strong>正确答案：C</strong><br>
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解析：开普勒第一定律指出所有行星绕太阳运动的轨道都是椭圆，太阳处在椭圆的一个焦点上，故A错误；根据开普勒第二定律，行星与太阳的连线在相等时间内扫过相等的面积，因此行星在近日点的速率大于在远日点的速率，故B错误；开普勒第三定律表明所有行星的轨道半长轴的三次方与公转周期的二次方的比值都相等，故C正确；开普勒定律不仅适用于行星绕太阳的运动，也适用于卫星绕行星的运动，只是比值不同，故D错误。
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</div>
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</div>
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<!-- 简单难度题目 (初始隐藏) -->
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<div class="question hidden" data-difficulty="easy" data-question="1">
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<div class="question-header">
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<div class="question-number">简单难度 - 问题 1</div>
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<div class="question-points">20分</div>
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</div>
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<div class="question-text">
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万有引力定律是由哪位科学家提出的？
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</div>
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<div class="options">
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<div class="option">
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<input type="radio" name="eq1" id="eq1-a" value="A">
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<label for="eq1-a">A. 爱因斯坦</label>
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</div>
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<div class="option">
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<input type="radio" name="eq1" id="eq1-b" value="B">
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<label for="eq1-b">B. 牛顿</label>
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</div>
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<div class="option">
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<input type="radio" name="eq1" id="eq1-c" value="C">
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<label for="eq1-c">C. 伽利略</label>
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</div>
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<div class="option">
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<input type="radio" name="eq1" id="eq1-d" value="D">
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<label for="eq1-d">D. 开普勒</label>
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</div>
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</div>
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<div class="question-explanation">
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<strong>正确答案：B</strong><br>
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解析：万有引力定律是由英国科学家牛顿在1687年提出的，故答案为B。
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</div>
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</div>
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<div class="question hidden" data-difficulty="easy" data-question="2">
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<div class="question-header">
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<div class="question-number">简单难度 - 问题 2</div>
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<div class="question-points">20分</div>
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</div>
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<div class="question-text">
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地球对物体的吸引力称为：
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</div>
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<div class="options">
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<div class="option">
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<input type="radio" name="eq2" id="eq2-a" value="A">
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<label for="eq2-a">A. 重力</label>
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</div>
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<div class="option">
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<input type="radio" name="eq2" id="eq2-b" value="B">
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<label for="eq2-b">B. 摩擦力</label>
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</div>
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<div class="option">
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<input type="radio" name="eq2" id="eq2-c" value="C">
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<label for="eq2-c">C. 弹力</label>
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</div>
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<div class="option">
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<input type="radio" name="eq2" id="eq2-d" value="D">
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<label for="eq2-d">D. 向心力</label>
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</div>
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</div>
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<div class="question-explanation">
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<strong>正确答案：A</strong><br>
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解析：地球对物体的吸引力称为重力，故答案为A。
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</div>
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</div>
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<div class="question hidden" data-difficulty="easy" data-question="3">
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<div class="question-header">
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<div class="question-number">简单难度 - 问题 3</div>
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<div class="question-points">20分</div>
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</div>
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<div class="question-text">
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下列哪个现象与万有引力无关？
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</div>
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<div class="options">
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<div class="option">
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<input type="radio" name="eq3" id="eq3-a" value="A">
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<label for="eq3-a">A. 苹果落地</label>
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</div>
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<div class="option">
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<input type="radio" name="eq3" id="eq3-b" value="B">
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<label for="eq3-b">B. 月球绕地球运动</label>
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</div>
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<div class="option">
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<input type="radio" name="eq3" id="eq3-c" value="C">
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<label for="eq3-c">C. 磁铁吸引铁钉</label>
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</div>
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<div class="option">
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<input type="radio" name="eq3" id="eq3-d" value="D">
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<label for="eq3-d">D. 地球绕太阳公转</label>
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</div>
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</div>
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<div class="question-explanation">
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<strong>正确答案：C</strong><br>
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解析：磁铁吸引铁钉是磁力作用的结果，与万有引力无关，故答案为C。
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</div>
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</div>
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2025-08-28 07:51:28 +08:00
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2025-08-28 08:58:19 +08:00
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<div class="question hidden" data-difficulty="easy" data-question="4">
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<div class="question-header">
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<div class="question-number">简单难度 - 问题 4</div>
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<div class="question-points">20分</div>
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</div>
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<div class="question-text">
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物体的质量越大，它受到的重力就：
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</div>
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<div class="options">
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<div class="option">
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<input type="radio" name="eq4" id="eq4-a" value="A">
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<label for="eq4-a">A. 越小</label>
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</div>
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<div class="option">
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<input type="radio" name="eq4" id="eq4-b" value="B">
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<label for="eq4-b">B. 越大</label>
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</div>
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<div class="option">
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<input type="radio" name="eq4" id="eq4-c" value="C">
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<label for="eq4-c">C. 不变</label>
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</div>
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<div class="option">
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<input type="radio" name="eq4" id="eq4-d" value="D">
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<label for="eq4-d">D. 无法确定</label>
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</div>
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</div>
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<div class="question-explanation">
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<strong>正确答案：B</strong><br>
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解析：根据重力公式G=mg，物体受到的重力与质量成正比，质量越大，重力越大，故答案为B。
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</div>
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2025-08-28 07:51:28 +08:00
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</div>
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2025-08-28 08:58:19 +08:00
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<div class="question hidden" data-difficulty="easy" data-question="5">
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<div class="question-header">
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<div class="question-number">简单难度 - 问题 5</div>
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<div class="question-points">20分</div>
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</div>
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<div class="question-text">
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在地球表面，重力加速度g的近似值为：
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</div>
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<div class="options">
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<div class="option">
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<input type="radio" name="eq5" id="eq5-a" value="A">
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<label for="eq5-a">A. 9.8 m/s²</label>
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</div>
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<div class="option">
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<input type="radio" name="eq5" id="eq5-b" value="B">
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<label for="eq5-b">B. 5.0 m/s²</label>
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</div>
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<div class="option">
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<input type="radio" name="eq5" id="eq5-c" value="C">
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<label for="eq5-c">C. 15.6 m/s²</label>
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</div>
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<div class="option">
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<input type="radio" name="eq5" id="eq5-d" value="D">
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<label for="eq5-d">D. 3.0 m/s²</label>
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</div>
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</div>
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<div class="question-explanation">
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<strong>正确答案：A</strong><br>
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解析：在地球表面，重力加速度g的近似值为9.8 m/s²，故答案为A。
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</div>
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</div>
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<!-- 高级难度题目 (初始隐藏) -->
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<div class="question hidden" data-difficulty="hard" data-question="1">
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<div class="question-header">
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<div class="question-number">高级难度 - 问题 1</div>
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<div class="question-points">20分</div>
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</div>
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<div class="question-text">
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已知地球质量为M，半径为R，万有引力常量为G。一颗人造卫星在离地面高度为R的圆形轨道上运行，则该卫星的运行周期为：
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</div>
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<div class="options">
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<div class="option">
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<input type="radio" name="hq1" id="hq1-a" value="A">
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<label for="hq1-a">A. 2π√(2R³/GM)</label>
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</div>
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<div class="option">
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<input type="radio" name="hq1" id="hq1-b" value="B">
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<label for="hq1-b">B. 4π√(2R³/GM)</label>
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</div>
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<div class="option">
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<input type="radio" name="hq1" id="hq1-c" value="C">
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<label for="hq1-c">C. 2π√(8R³/GM)</label>
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</div>
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<div class="option">
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<input type="radio" name="hq1" id="hq1-d" value="D">
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<label for="hq1-d">D. 4π√(R³/GM)</label>
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</div>
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</div>
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<div class="question-explanation">
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<strong>正确答案：C</strong><br>
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解析：卫星轨道半径r=R+h=2R，根据万有引力提供向心力：GMm/r²=m(2π/T)²r，解得T=2π√(r³/GM)=2π√((2R)³/GM)=2π√(8R³/GM)，故答案为C。
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</div>
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</div>
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<div class="question hidden" data-difficulty="hard" data-question="2">
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<div class="question-header">
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<div class="question-number">高级难度 - 问题 2</div>
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<div class="question-points">20分</div>
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</div>
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<div class="question-text">
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两个质量分别为m1和m2的星球组成双星系统，它们绕两者连线上某一点做匀速圆周运动，两星球之间的距离为L。则它们的运行周期T为：
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2025-08-28 07:51:28 +08:00
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</div>
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2025-08-28 08:58:19 +08:00
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<div class="options">
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<div class="option">
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<input type="radio" name="hq2" id="hq2-a" value="A">
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<label for="hq2-a">A. 2π√(L³/G(m1+m2))</label>
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</div>
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<div class="option">
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<input type="radio" name="hq2" id="hq2-b" value="B">
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<label for="hq2-b">B. 2π√(L³/2G(m1+m2))</label>
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</div>
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<div class="option">
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<input type="radio" name="hq2" id="hq2-c" value="C">
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<label for="hq2-c">C. 2π√(L³/Gm1m2)</label>
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</div>
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<div class="option">
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<input type="radio" name="hq2" id="hq2-d" value="D">
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<label for="hq2-d">D. 2π√(L³/G|m1-m2|)</label>
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</div>
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2025-08-28 07:51:28 +08:00
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</div>
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2025-08-28 08:58:19 +08:00
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<div class="question-explanation">
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<strong>正确答案：A</strong><br>
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解析：双星系统中，万有引力提供向心力，且两星球的角速度相等。设m1和m2到质心的距离分别为r1和r2，则r1+r2=L，m1ω²r1=m2ω²r2=Gm1m2/L²，解得ω=√(G(m1+m2)/L³)，周期T=2π/ω=2π√(L³/G(m1+m2))，故答案为A。
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</div>
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</div>
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<div class="question hidden" data-difficulty="hard" data-question="3">
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<div class="question-header">
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<div class="question-number">高级难度 - 问题 3</div>
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<div class="question-points">20分</div>
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</div>
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<div class="question-text">
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一物体在地球表面的重量为G，若将该物体移至距离地心4R的位置（R为地球半径），则它的重量变为：
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</div>
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<div class="options">
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<div class="option">
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<input type="radio" name="hq3" id="hq3-a" value="A">
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<label for="hq3-a">A. G/4</label>
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</div>
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<div class="option">
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<input type="radio" name="hq3" id="hq3-b" value="B">
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<label for="hq3-b">B. G/8</label>
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</div>
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<div class="option">
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<input type="radio" name="hq3" id="hq3-c" value="C">
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<label for="hq3-c">C. G/16</label>
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</div>
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<div class="option">
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<input type="radio" name="hq3" id="hq3-d" value="D">
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<label for="hq3-d">D. G/2</label>
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</div>
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</div>
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<div class="question-explanation">
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<strong>正确答案：C</strong><br>
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解析：重量即物体受到的重力，根据万有引力公式G=GMm/r²，当距离地心由R变为4R时，重力变为原来的1/16，故答案为C。
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</div>
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</div>
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<div class="question hidden" data-difficulty="hard" data-question="4">
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<div class="question-header">
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<div class="question-number">高级难度 - 问题 4</div>
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<div class="question-points">20分</div>
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</div>
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<div class="question-text">
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已知太阳质量为M，地球绕太阳做匀速圆周运动的轨道半径为r，万有引力常量为G。则地球绕太阳运动的动能为：
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</div>
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<div class="options">
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<div class="option">
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<input type="radio" name="hq4" id="hq4-a" value="A">
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<label for="hq4-a">A. GMm/2r</label>
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</div>
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<div class="option">
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<input type="radio" name="hq4" id="hq4-b" value="B">
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<label for="hq4-b">B. GMm/r</label>
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</div>
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<div class="option">
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<input type="radio" name="hq4" id="hq4-c" value="C">
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<label for="hq4-c">C. GMm/4r</label>
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</div>
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<div class="option">
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<input type="radio" name="hq4" id="hq4-d" value="D">
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<label for="hq4-d">D. 2GMm/r</label>
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</div>
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</div>
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<div class="question-explanation">
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<strong>正确答案：A</strong><br>
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解析：地球绕太阳运动的向心力由万有引力提供：GMm/r²=mv²/r，动能Ek=1/2mv²=GMm/2r，故答案为A。
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</div>
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</div>
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<div class="question hidden" data-difficulty="hard" data-question="5">
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<div class="question-header">
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<div class="question-number">高级难度 - 问题 5</div>
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<div class="question-points">20分</div>
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</div>
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<div class="question-text">
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某行星的质量是地球质量的4倍，半径是地球半径的2倍。一物体在地球表面的逃逸速度为v，则该物体在该行星表面的逃逸速度为：
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</div>
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<div class="options">
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<div class="option">
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<input type="radio" name="hq5" id="hq5-a" value="A">
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<label for="hq5-a">A. v</label>
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</div>
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<div class="option">
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<input type="radio" name="hq5" id="hq5-b" value="B">
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<label for="hq5-b">B. √2 v</label>
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</div>
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<div class="option">
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<input type="radio" name="hq5" id="hq5-c" value="C">
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<label for="hq5-c">C. 2v</label>
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</div>
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<div class="option">
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<input type="radio" name="hq5" id="hq5-d" value="D">
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<label for="hq5-d">D. 4v</label>
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</div>
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</div>
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<div class="question-explanation">
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<strong>正确答案：B</strong><br>
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解析：逃逸速度公式v=√(2GM/R)，行星的M是地球的4倍，R是地球的2倍，则v'=√(2G·4M/2R)=√(4GM/R)=√2·√(2GM/R)=√2 v，故答案为B。
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2025-08-28 07:51:28 +08:00
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</div>
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</div>
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</div>
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2025-08-28 08:58:19 +08:00
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<div class="navigation-section" id="navigation">
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<h3 id="navigation-message"></h3>
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<button type="button" id="next-btn">开始答题</button>
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<div class="submit-section">
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<button type="button" id="submit-btn">提交答案</button>
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<div id="result">
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<div class="result-header">测验结果</div>
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<div class="score">您的得分：<span id="score-value">0</span>/100分</div>
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<div class="correct-answers">正确题数：<span id="correct-count">0</span>道</div>
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<div class="incorrect-answers">错误题数：<span id="incorrect-count">0</span>道</div>
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</div>
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2025-08-28 07:21:01 +08:00
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</div>
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</div>
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2025-08-28 08:58:19 +08:00
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<script>
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document.addEventListener('DOMContentLoaded', function() {
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// 存储各难度题目的正确答案
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const correctAnswers = {
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medium: {
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mq1: 'B',
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mq2: 'D',
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mq3: 'B',
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mq4: 'A',
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mq5: 'C'
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},
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easy: {
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eq1: 'B',
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eq2: 'A',
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eq3: 'C',
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eq4: 'B',
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eq5: 'A'
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},
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hard: {
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hq1: 'C',
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hq2: 'A',
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hq3: 'C',
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hq4: 'A',
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hq5: 'B'
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}
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};
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// 跟踪测验状态
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const quizState = {
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currentDifficulty: 'medium', // 初始难度
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completedDifficulties: [],
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scores: {}
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};
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// DOM元素
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const submitBtn = document.getElementById('submit-btn');
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const nextBtn = document.getElementById('next-btn');
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const navigationSection = document.getElementById('navigation');
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const navigationMessage = document.getElementById('navigation-message');
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const result = document.getElementById('result');
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const scoreValue = document.getElementById('score-value');
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const correctCount = document.getElementById('correct-count');
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const incorrectCount = document.getElementById('incorrect-count');
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const difficultyIndicator = document.querySelector('.difficulty-indicator');
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// 提交当前难度的答案
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submitBtn.addEventListener('click', function() {
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const currentAnswers = correctAnswers[quizState.currentDifficulty];
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const totalQuestions = Object.keys(currentAnswers).length;
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let score = 0;
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let correct = 0;
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let incorrect = 0;
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// 检查所有问题的答案
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for (const [questionName, correctAnswer] of Object.entries(currentAnswers)) {
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const selectedOption = document.querySelector(`input[name="${questionName}"]:checked`);
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const questionNumber = questionName.substring(2); // 从mq1提取1
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const explanationElement = document.querySelector(`[data-difficulty="${quizState.currentDifficulty}"][data-question="${questionNumber}"] .question-explanation`);
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// 显示解析
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explanationElement.style.display = 'block';
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if (selectedOption) {
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const userAnswer = selectedOption.value;
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// 标记正确或错误
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if (userAnswer === correctAnswer) {
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score += 20; // 每题20分
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correct++;
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selectedOption.closest('.option').style.backgroundColor = '#e8f5e9';
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selectedOption.closest('.option').style.borderColor = '#4caf50';
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} else {
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incorrect++;
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selectedOption.closest('.option').style.backgroundColor = '#ffebee';
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selectedOption.closest('.option').style.borderColor = '#c62828';
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// 标记正确答案
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const correctOption = document.querySelector(`input[name="${questionName}"][value="${correctAnswer}"]`);
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correctOption.closest('.option').style.backgroundColor = '#e8f5e9';
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correctOption.closest('.option').style.borderColor = '#4caf50';
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}
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} else {
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// 未答题
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incorrect++;
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const questionElement = document.querySelector(`[data-difficulty="${quizState.currentDifficulty}"][data-question="${questionNumber}"]`);
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questionElement.style.border = '2px solid #ff9800';
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}
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}
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// 保存当前难度得分
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quizState.scores[quizState.currentDifficulty] = {
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score: score,
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correct: correct,
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incorrect: incorrect
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};
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quizState.completedDifficulties.push(quizState.currentDifficulty);
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// 显示当前难度结果
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scoreValue.textContent = score;
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correctCount.textContent = correct;
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incorrectCount.textContent = incorrect;
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result.style.display = 'block';
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// 隐藏提交按钮
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submitBtn.style.display = 'none';
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// 根据当前难度和得分决定下一步
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if (quizState.currentDifficulty === 'medium') {
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if (correct < 3) {
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// 中等难度答对少于3题，推荐简单难度
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showNavigation('您在中等难度题目中表现不佳，建议先完成简单难度题目来巩固基础。', 'easy');
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} else {
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// 中等难度答对3题及以上，推荐高级难度
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showNavigation('恭喜您完成中等难度题目！接下来挑战高级难度题目吧。', 'hard');
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}
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} else {
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// 简单或高级难度完成后，显示最终结果
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showFinalResult();
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}
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});
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// 显示导航信息
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function showNavigation(message, nextDifficulty) {
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navigationMessage.textContent = message;
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navigationSection.dataset.nextDifficulty = nextDifficulty;
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navigationSection.style.display = 'block';
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}
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// 开始下一组题目
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nextBtn.addEventListener('click', function() {
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const nextDifficulty = navigationSection.dataset.nextDifficulty;
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if (!nextDifficulty) return;
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// 更新当前难度
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quizState.currentDifficulty = nextDifficulty;
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// 隐藏导航和结果
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navigationSection.style.display = 'none';
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result.style.display = 'none';
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// 显示提交按钮
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submitBtn.style.display = 'inline-block';
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// 更新难度指示器
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difficultyIndicator.textContent = `当前难度：${getDifficultyName(nextDifficulty)}`;
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difficultyIndicator.className = `difficulty-indicator difficulty-${nextDifficulty}`;
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// 隐藏所有题目
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document.querySelectorAll('.question').forEach(question => {
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question.classList.add('hidden');
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});
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// 显示下一组题目
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document.querySelectorAll(`[data-difficulty="${nextDifficulty}"]`).forEach(question => {
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question.classList.remove('hidden');
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});
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// 滚动到页面顶部
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window.scrollTo(0, 0);
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});
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// 获取难度名称
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function getDifficultyName(difficulty) {
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const names = {
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easy: '简单',
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medium: '中等',
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hard: '高级'
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};
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return names[difficulty] || difficulty;
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}
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// 显示最终结果
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function showFinalResult() {
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// 计算总分
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let totalScore = 0;
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let totalCorrect = 0;
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let totalIncorrect = 0;
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for (const difficulty of quizState.completedDifficulties) {
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totalScore += quizState.scores[difficulty].score;
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totalCorrect += quizState.scores[difficulty].correct;
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totalIncorrect += quizState.scores[difficulty].incorrect;
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}
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// 更新结果显示
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scoreValue.textContent = totalScore;
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correctCount.textContent = totalCorrect;
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incorrectCount.textContent = totalIncorrect;
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result.style.display = 'block';
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// 显示完成信息
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navigationMessage.textContent = '恭喜您完成所有推荐题目！';
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navigationSection.style.display = 'block';
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document.getElementById('next-btn').style.display = 'none';
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}
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});
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</script>
|
2025-08-28 07:21:01 +08:00
|
|
|
|
</body>
|
2025-08-28 08:58:19 +08:00
|
|
|
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</html>
|
