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【题目】You will make such simple mistakes_________ you are careful enough.

A.unlessB.untilC.if

【答案】A

【解析】

句意:除非你足够小心,否则你就会犯这样简单的错误。

考查连词辨析、unless从句。unless除非、如果不,引导条件状语从句,从句内容含有否定意义;until直到……,引导时间状语从句;if如果,引导条件状语从句;从文字的表层意思推断,空格指“如果不足够小心,就会犯这样简单的错误” ——表示条件,含有否定意义的条件句;故选A

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