🎯 智能答题系统 - 增强版

📝 JSON格式示例：

{
  "title": "JavaScript基础知识测试",
  "description": "测试你的JavaScript基础",
  "questions": [
    {
      "id": 1,
      "type": "single",
      "question": "JavaScript中，以下哪个不是基本数据类型？",
      "options": ["String", "Number", "Array", "Boolean"],
      "answer": 2
    },
    {
      "id": 2,
      "type": "multiple",
      "question": "以下哪些是CSS的选择器类型？（多选）",
      "options": ["类选择器", "ID选择器", "元素选择器", "属性选择器"],
      "answer": [0, 1, 2, 3]
    },
    {
      "id": 3,
      "type": "boolean",
      "question": "HTML是一种编程语言。",
      "answer": false
    }
  ]
}