[
  {
    "id":"Mercury_7283255",
    "question":"减数分裂过程中下列哪个事件对物种内部的变异贡献最大？",
    "choices":[
      "染色体配对",
      "单倍体配子的产生",
      "等位基因分离",
      "染色单体分离"
    ],
    "answerKey":"C"
  },
  {
    "id":"Mercury_405944",
    "question":"如今生产的汽车发动机都注重燃油效率。燃油效率高的发动机最有可能对城市产生的影响是减少",
    "choices":[
      "空气污染。",
      "热污染。",
      "噪音污染。",
      "光污染。"
    ],
    "answerKey":"A"
  },
  {
    "id":"MCAS_2001_8_2",
    "question":"哪一项最能描述运输技术？",
    "choices":[
      "用于运送人员和产品的系统",
      "将原材料转化为商品的企业",
      "建筑物的建造和装修",
      "机械能转化为热能"
    ],
    "answerKey":"A"
  },
  {
    "id":"MCAS_2005_8_14",
    "question":"如果 1 公斤甲苯的熔点为 -95°C，那么 500 克甲苯将",
    "choices":[
      "熔点为-47.5°C。",
      "熔点为-95°C。",
      "在 95°C 时沸腾。",
      "沸点为47.5°C。"
    ],
    "answerKey":"B"
  },
  {
    "id":"Mercury_400056",
    "question":"哪种植物特性是遗传的？",
    "choices":[
      "叶子的形状",
      "它接收的水量",
      "从土壤中吸收的矿物质数量",
      "暴露在阳光下的程度"
    ],
    "answerKey":"A"
  },
  {
    "id":"NAEP_2009_4_S11+2",
    "question":"罗杰把水倒在一堆沙子上。一些沙子被冲走了。这个过程类似于以下哪项？",
    "choices":[
      "火山喷发",
      "峡谷壁的侵蚀",
      "山脉的隆升",
      "沙漠中沙丘或土丘的形成"
    ],
    "answerKey":"B"
  },
  {
    "id":"Mercury_7136115",
    "question":"罗杰去拜访住在农场里的祖父。他帮祖父把干草从谷仓里搬出来。罗杰在谷仓里干活的时候开始打喷嚏。身体的哪个系统最有可能引起罗杰打喷嚏？",
    "choices":[
      "循环系统",
      "排泄",
      "消化系统",
      "免疫"
    ],
    "answerKey":"D"
  },
  {
    "id":"Mercury_SC_416531",
    "question":"艾琳把她的三叶草放在一个阴暗的角落里。很快，她发现叶子向窗户倾斜了。这株植物最需要窗户的什么呢？",
    "choices":[
      "白天的阳光",
      "白天的空气",
      "夜晚的黑暗",
      "夜晚的温暖"
    ],
    "answerKey":"A"
  },
  {
    "id":"Mercury_404988",
    "question":"以下关于不可再生资源的说法哪个是正确的？",
    "choices":[
      "它们价格便宜。",
      "它们有助于保持空气清洁。",
      "它们的形成可能需要数百万年的时间。",
      "之所以使用它们，是因为它们很容易从地面移除。"
    ],
    "answerKey":"C"
  },
  {
    "id":"NYSEDREGENTS_2006_4_27",
    "question":"哪些人类活动最常对环境产生有害影响？",
    "choices":[
      "呼吸",
      "生长",
      "种植",
      "污染"
    ],
    "answerKey":"D"
  },
  {
    "id":"Mercury_SC_409901",
    "question":"植物进行光合作用需要能量来源。植物从哪里获取光合作用所需的能量？",
    "choices":[
      "氧",
      "糖",
      "阳光",
      "水"
    ],
    "answerKey":"C"
  },
  {
    "id":"NAEP_2000_4_S12+2",
    "question":"太阳表面有多热？",
    "choices":[
      "不像沸水那么热",
      "和火一样热",
      "约100°F",
      "比地球上几乎任何东西都热得多"
    ],
    "answerKey":"D"
  },
  {
    "id":"Mercury_7001768",
    "question":"胰岛素在我们体内的主要功能是",
    "choices":[
      "储存燃料以备后用。",
      "调节血液中的葡萄糖量。",
      "提高燃料消耗效率。",
      "阻止消化细菌消耗葡萄糖。"
    ],
    "answerKey":"B"
  }
]