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【题目】There will be more pollution ________more people use the public transportation,

A.untilB.unlessC.while

【答案】B

【解析】

句意:除非更多的人使用公共交通工具,否则会有更多的污染。

考查连词辨析。until直到……;unless除非;while当……时候。根据“more people use the public transportation,”可知此处用unless引导的条件状语从句,遵循主句用一般将来时,从句用一般现在时态。根据题意,故选B

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