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【题目】Our Physics teacher tells us that electricity flows ______ a wire into our homes.

A.throughB.acrossC.withD.at

【答案】A

【解析】

句意:我们的物理老师告诉我们电流通过电线进入我们的家。

through穿过,从事物内部穿过;across横穿,从事物的一边到另一边;with,和,带有;at在……。电是从电线中穿过的,故选A

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