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【题目】The air pollution is a serious_________in our country. Our government is trying to solve it.

A.choiceB.programC.problem

【答案】C

【解析】

句意:空气污染在我们国家是一个严重的问题,我们的政府正努力解决它(空气污染问题)。

考查名词辨析。choice选择;program节目;problem问题。根据第二句中solve可知,此处是“解决问题”,problem是可数名词,用在此处符合题意。故选C

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