{
  "math": {
    "addition": [
      {
        "question": "2 + 3 = ?",
        "options": ["4", "5", "6", "7"],
        "correct": 1,
        "difficulty": 1
      },
      {
        "question": "7 + 8 = ?",
        "options": ["14", "15", "16", "17"],
        "correct": 1,
        "difficulty": 2
      },
      {
        "question": "12 + 15 = ?",
        "options": ["26", "27", "28", "29"],
        "correct": 1,
        "difficulty": 3
      },
      {
        "question": "25 + 18 = ?",
        "options": ["42", "43", "44", "45"],
        "correct": 1,
        "difficulty": 4
      },
      {
        "question": "35 + 27 = ?",
        "options": ["61", "62", "63", "64"],
        "correct": 1,
        "difficulty": 5
      }
    ],
    "subtraction": [
      {
        "question": "8 - 3 = ?",
        "options": ["4", "5", "6", "7"],
        "correct": 1,
        "difficulty": 1
      },
      {
        "question": "15 - 7 = ?",
        "options": ["7", "8", "9", "10"],
        "correct": 0,
        "difficulty": 2
      },
      {
        "question": "20 - 12 = ?",
        "options": ["7", "8", "9", "10"],
        "correct": 1,
        "difficulty": 3
      },
      {
        "question": "35 - 18 = ?",
        "options": ["16", "17", "18", "19"],
        "correct": 1,
        "difficulty": 4
      },
      {
        "question": "50 - 23 = ?",
        "options": ["26", "27", "28", "29"],
        "correct": 1,
        "difficulty": 5
      }
    ],
    "comparison": [
      {
        "question": "5 __ 3",
        "options": [">", "<", "="],
        "correct": 0,
        "difficulty": 1
      },
      {
        "question": "8 __ 8",
        "options": [">", "<", "="],
        "correct": 2,
        "difficulty": 1
      },
      {
        "question": "12 __ 15",
        "options": [">", "<", "="],
        "correct": 1,
        "difficulty": 2
      },
      {
        "question": "25 __ 18",
        "options": [">", "<", "="],
        "correct": 0,
        "difficulty": 3
      },
      {
        "question": "40 __ 40",
        "options": [">", "<", "="],
        "correct": 2,
        "difficulty": 4
      }
    ],
    "clock": [
      {
        "question": "时钟显示3点，是几点？",
        "options": ["上午3点", "下午3点", "晚上3点"],
        "correct": 0,
        "difficulty": 1
      },
      {
        "question": "分针指向6，是几分？",
        "options": ["25分", "30分", "35分"],
        "correct": 1,
        "difficulty": 2
      },
      {
        "question": "时针指向2，分针指向12，是几点？",
        "options": ["2点", "12点", "2点30分"],
        "correct": 0,
        "difficulty": 3
      },
      {
        "question": "下午4点30分，时针和分针的位置？",
        "options": ["时针在4和5之间", "时针在4", "时针在5"],
        "correct": 0,
        "difficulty": 4
      }
    ]
  },
  "language": {
    "pinyin": [
      {
        "question": "'猫'的拼音是？",
        "options": ["māo", "máo", "mǎo", "mào"],
        "correct": 0,
        "difficulty": 1
      },
      {
        "question": "'书'的声调是？",
        "options": ["一声", "二声", "三声", "四声"],
        "correct": 0,
        "difficulty": 1
      },
      {
        "question": "'花'的拼音是？",
        "options": ["huā", "huá", "huǎ", "huà"],
        "correct": 0,
        "difficulty": 2
      },
      {
        "question": "'鸟'的声调是？",
        "options": ["一声", "二声", "三声", "四声"],
        "correct": 2,
        "difficulty": 3
      }
    ],
    "word": [
      {
        "question": "用'美丽'组词",
        "options": ["美丽的花", "美丽的人", "美丽的风景", "以上都对"],
        "correct": 3,
        "difficulty": 2
      },
      {
        "question": "'春天'的反义词是？",
        "options": ["夏天", "秋天", "冬天", "季节"],
        "correct": 2,
        "difficulty": 2
      },
      {
        "question": "'高兴'的近义词是？",
        "options": ["快乐", "悲伤", "生气", "害怕"],
        "correct": 0,
        "difficulty": 3
      },
      {
        "question": "'大'的反义词是？",
        "options": ["小", "高", "长", "宽"],
        "correct": 0,
        "difficulty": 1
      }
    ],
    "poem": [
      {
        "question": "'床前明月光'的下一句是？",
        "options": ["疑是地上霜", "举头望明月", "低头思故乡"],
        "correct": 0,
        "difficulty": 2
      },
      {
        "question": "《静夜思》的作者是？",
        "options": ["李白", "杜甫", "白居易"],
        "correct": 0,
        "difficulty": 3
      },
      {
        "question": "'春眠不觉晓'的下一句是？",
        "options": ["处处闻啼鸟", "夜来风雨声", "花落知多少"],
        "correct": 0,
        "difficulty": 2
      },
      {
        "question": "《春晓》的作者是？",
        "options": ["李白", "杜甫", "孟浩然"],
        "correct": 2,
        "difficulty": 3
      }
    ]
  },
  "life": {
    "emotion": [
      {
        "question": "看到好吃的食物，应该是什么表情？",
        "options": ["😊", "😢", "😠", "😴"],
        "correct": 0,
        "difficulty": 1
      },
      {
        "question": "朋友帮助了你，你应该？",
        "options": ["说谢谢", "不理他", "生气", "哭"],
        "correct": 0,
        "difficulty": 1
      },
      {
        "question": "考试得了满分，应该？",
        "options": ["骄傲", "高兴", "难过", "生气"],
        "correct": 1,
        "difficulty": 2
      },
      {
        "question": "遇到困难时，应该？",
        "options": ["放弃", "求助", "哭", "生气"],
        "correct": 1,
        "difficulty": 3
      }
    ],
    "safety": [
      {
        "question": "过马路时应该？",
        "options": ["看红绿灯", "直接跑过去", "闭着眼睛", "听音乐"],
        "correct": 0,
        "difficulty": 1
      },
      {
        "question": "遇到陌生人给糖吃，应该？",
        "options": ["接受", "拒绝", "先吃再说", "告诉老师"],
        "correct": 1,
        "difficulty": 2
      },
      {
        "question": "火灾时应该？",
        "options": ["坐电梯", "走楼梯", "跳窗", "躲床下"],
        "correct": 1,
        "difficulty": 3
      },
      {
        "question": "地震时应该？",
        "options": ["跑出去", "躲在桌子下", "站在门口", "继续睡觉"],
        "correct": 1,
        "difficulty": 4
      }
    ],
    "daily": [
      {
        "question": "垃圾分类中，塑料瓶属于？",
        "options": ["可回收", "有害垃圾", "厨余垃圾", "其他垃圾"],
        "correct": 0,
        "difficulty": 2
      },
      {
        "question": "吃饭前应该？",
        "options": ["洗手", "看电视", "玩游戏", "睡觉"],
        "correct": 0,
        "difficulty": 1
      },
      {
        "question": "睡觉前应该？",
        "options": ["刷牙", "吃东西", "玩游戏", "看电视"],
        "correct": 0,
        "difficulty": 2
      },
      {
        "question": "整理房间时，应该？",
        "options": ["乱扔", "分类整理", "不管", "让别人做"],
        "correct": 1,
        "difficulty": 3
      }
    ]
  }
}