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【题目】—Why is the bread bad?

—It’s common in summer. Food goes bad easily_________it isn’t put in the fridge.

A.untilB.ifC.unless

【答案】B

【解析】

句意:——为什么面包坏了?——夏天很常见。食物如果不放进冰箱很容易变质。

考查连词、if从句。until直到……,引导时间状语从句;if“如果”表示条件,引导条件状语从句;unless“除非、如果不”,表示条件,引导条件状语从句;从文字的表层意思推断空格指食物如果不放进冰箱,从句是否定句,判断空格填if引导的条件状语从句;故选B

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