var json2 =({
  "?xml": {
    "@version": "1.0",
    "@encoding": "UTF-8"
  },
  "text": {
    "heading1": {
      "@fieldnumber": "0",
      "#text": "目的"
    },
    "objective": {
      "@fieldnumber": "1",
      "#text": "从能量和粒子移动的角度考虑，理解当物质转变状态时会发生什么。"
    },
    "heading2": {
      "@fieldnumber": "2",
      "#text": "目标"
    },
    "summary": {
      "@fieldnumber": "3",
      "#cdata-section": "&#187;  熔化是指当一个固体被加热转变成液体的过程。粒子积攒能量震动加快直到他们能从原来稳固刚硬的结构里移动出来。该过程发生在熔点。\n<br>&#187;  蒸发是指当一种液体被加热转变成气体的过程。粒子积攒足够能量从而能完全移动分离开来。该过程发生在沸点。"
    }
  }
});
