The Meglev Train travels in a vacuum be...

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

A．where

B．which

C．when

D．therefore

D 【解析】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

考点分析：

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