var json1=({
  "LO": {
    "VOText": {
      "VO": [
        {
          "@id": "sound1",
          "@mp3ref": "blood_immunity_01.mp3",
          "#text": "身体和血液对疾病具有天然防御能力，但是有时候单凭此能力不足以抵御疾病。"
        },
        {
          "@id": "sound2",
          "@mp3ref": "blood_immunity_02.mp3",
          "#text": "疫苗可以针对某些疾病提供防御或免疫能力。"
        },
        {
          "@id": "sound3",
          "@mp3ref": "blood_immunity_03.mp3",
          "#text": "疫苗通过人工免疫机制来抵御疾病。"
        },
        {
          "@id": "sound4",
          "@mp3ref": "blood_immunity_04.mp3",
          "#text": "有的疫苗需要注射，有的可以口服。应用疫苗的过程称为免疫接种。"
        },
        {
          "@id": "sound5",
          "@mp3ref": "blood_immunity_05.mp3",
          "#text": "疫苗由病原体制成，带有能引发免疫应答的抗原。"
        },
        {
          "@id": "sound6",
          "@mp3ref": "blood_immunity_06.mp3",
          "#text": "病原体为已死或灭活状态，可保证其无法致病。"
        },
        {
          "@id": "sound7",
          "@mp3ref": "blood_immunity_07.mp3",
          "#text": "接种疫苗后，身体会开始产生抗体。"
        },
        {
          "@id": "sound8",
          "@mp3ref": "blood_immunity_08.mp3",
          "#text": "人体通常不会罹患接种过对应疫苗的疾病，因为接种者已对该疾病产生了免疫力。"
        },
        {
          "@id": "sound9",
          "@mp3ref": "blood_immunity_09.mp3",
          "#text": "一种抗体仅对一种抗原有效。"
        },
        {
          "@id": "sound10",
          "@mp3ref": "blood_immunity_10.mp3",
          "#text": "例如，百日咳疫苗不会预防麻疹。所以不同的疾病要有不同的疫苗。"
        },
        {
          "@id": "sound11",
          "@mp3ref": "blood_immunity_11.mp3",
          "#text": "有些病原体，例如流感病毒，会不断发生变化，这使得制造有效的疫苗变得困难。"
        }
      ]
    },
    "Labels": {
      "Label": [
        {
          "@id": "slide1_protection",
          "#text": "疫苗可以针对某些疾病提供防御或免疫能力。"
        },
        {
          "@id": "slide1_artificial",
          "#text": "疫苗提供人工免疫 "
        },
        {
          "@id": "slide1_Pathogens",
          "#text": "病原体"
        },
        {
          "@id": "slide1_VACCINE",
          "#text": "疫苗"
        },
        {
          "@id": "slide2_makeanti",
          "#text": "接种疫苗后，身体会开始产生抗体。"
        },
        {
          "@id": "slide2_immune",
          "#text": "免疫"
        },
        {
          "@id": "slide2_Antibody",
          "#text": "抗体"
        },
        {
          "@id": "slide2_Pathogen",
          "#text": "病原体"
        },
        {
          "@id": "slide2_vaccwhooping",
          "#text": "百日咳疫苗"
        },
        {
          "@id": "slide2_whooping",
          "#text": "百日咳"
        },
        {
          "@id": "slide2_vaccmeasles",
          "#text": "麻疹疫苗"
        },
        {
          "@id": "slide2_Measles",
          "#text": "麻疹"
        },
        {
          "@id": "slide2_notmeasles",
          "#text": "不会预防麻疹"
        }
      ]
    }
  }
});
