2. 外语
  3. Current studies do not support the hypothesis that multiple vaccines____________________(破坏、削弱或“耗尽”婴儿的免疫系统)．

Current studies do not support the hypothesis that multiple vaccines____________________(破坏、削弱或“耗尽”婴儿的免疫系统)．

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问题 Current studies do not support the hypothesis that multiple vaccines____________________(破坏、削弱或“耗尽”婴儿的免疫系统)．
选项
答案overwhelm，weaken，or "use up" the infant’s immune system
解析 词汇使用题。本小题考查对词汇的掌握的情况。
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大学英语六级

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