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【题目】The scientist will give us a report __________ pollution.

A.onB.inC.atD.by

【答案】A

【解析】

句意:这位科学家将作一个关于污染的报告书。

考查介词辨析。A. on关于;B. in在……里面;C. at在……;D. by通过。根据题干可推测此处是说一份关于污染的报告。故选A

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