2. 外语
  3. According to the passage, static electricity can be caused by ______. What effect does excessive positive ions have on some peo

According to the passage, static electricity can be caused by ______. What effect does excessive positive ions have on some peo

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问题 According to the passage, static electricity can be caused by ______.
What effect does excessive positive ions have on some people?
选项 A、They think they are mad.
B、They feel very tired.
C、They become violently sick.
D、They are too tired to do-anything.
答案B
解析 细节题。题于中的excessive对应的是第二段首句中的a large number of“过多的，大量的”，而B中的 very tired与此句中的fatigue“疲劳”相对应，所以应选B。
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