var json1=({
  "LO": {
    "VOText": {
      "VO": [
        {
          "@id": "s1_sound1",
          "@mp3ref": "b06lfp23a.mp3",
          "#text": "数字金字塔是表示食物链中每一个营养级上的生物数量的图表。"
        },
        {
          "@id": "s1_sound2",
          "@mp3ref": "b06lfp23b.mp3",
          "#text": "每一级上的生物数量用一条与种群大小成比例的条来代替。"
        },
        {
          "@id": "s1_sound3",
          "@mp3ref": "b06lfp23c.mp3",
          "#text": "数字金字塔是有用的，因为它告诉我们在一条食物链中存在多少可利用的食物。"
        },
        {
          "@id": "s1_sound4",
          "@mp3ref": "b06lfp23d.mp3",
          "#text": "这条食物链：玫瑰叶 -> 蚜虫 -> 瓢虫 -> 蓝冠山雀 -> 猫 可以被描绘为这样的金字塔："
        },
        {
          "@id": "s1_sound5",
          "@mp3ref": "b06lfp23e.mp3",
          "#text": "代表生产者的条总是位于底层。"
        },
        {
          "@id": "s1_sound6",
          "@mp3ref": "b06lfp23f.mp3",
          "#text": "大部分食物链形成这样形状的金字塔，表示生物数量沿着食物链减少。"
        },
        {
          "@id": "s1_sound7",
          "@mp3ref": "b06lfp23g.mp3",
          "#text": "一只猫可能需要吃几只蓝冠山雀，这些蓝冠山雀会需要吃很多瓢虫，以满足它们对能量的需要。瓢虫会吃掉大部分的蚜虫，这些蚜虫会吃掉很多玫瑰叶片。"
        },
        {
          "@id": "s1_sound8",
          "@mp3ref": "b06lfp23h.mp3",
          "#text": "有些食物链形成异常形态的金字塔。如果我们重画金字塔，但是将玫瑰丛当成一种植物，而不是很多叶片，金字塔就会看起来很不同。"
        }
      ]
    },
    "Labels": {
      "Label": [
        {
          "@id": "slide1_label1",
          "#text": "营养级"
        },
        {
          "@id": "slide1_label2",
          "#text": "1、生产者"
        },
        {
          "@id": "slide1_label3",
          "#text": "2、初级消费者"
        },
        {
          "@id": "slide1_label4",
          "#text": "3、次级消费者"
        },
        {
          "@id": "slide1_label5",
          "#text": "4、三级消费者"
        },
        {
          "@id": "slide1_label6",
          "#text": "5、四级"
        },
        {
          "@id": "slide1_label7",
          "#text": "猫"
        },
        {
          "@id": "slide1_label8",
          "#text": "蓝冠山雀"
        },
        {
          "@id": "slide1_label9",
          "#text": "瓢虫"
        },
        {
          "@id": "slide1_label10",
          "#text": "蚜虫"
        },
        {
          "@id": "slide1_label11",
          "#text": "玫瑰叶"
        },
        {
          "@id": "slide1_label12",
          "#text": "消费者趋向于个体增大，数量减少。"
        }
      ]
    }
  }
});
