【題目】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:我們的物理老師告訴我們電流通過電線進入我們的家。

through穿過,從事物內(nèi)部穿過;across橫穿,從事物的一邊到另一邊;with,和,帶有;at在……。電是從電線中穿過的,故選A。

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