【題目】__________ the train arrived, some people were waiting inside the station __________ others were heading for the platform.

A. While ； while

B. While ； when

C. When ； when

D. When ； while

【答案】D

【解析】句意：當(dāng)火車來的時(shí)候，有些人在站內(nèi)等待而有些人直奔站臺。when當(dāng)……的時(shí)候，可以和瞬間動(dòng)詞arrive連用，后者while表示對比。

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