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The Meglev Train travels in a vacuum between two magnets, ___ no pollution is caused and less energy is consumed.


  1. A.
    where
  2. B.
    which
  3. C.
    when
  4. D.
    therefore
D
试题分析:句意辨析。句意:磁悬浮列车是在两个磁铁间运行的,因此不会导致污染,也没有消耗什么能源。根据句意说明上下文是因果关系,therefore就是表示因果关系,故D正确。
考点:考查句意分析
点评:本题要根据上下文的语义来判断使用合适的词。Therefore表示上下文的因果关系。
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