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5.Take the note as a reminder _____we might forget to buy what we need while shopping.(  )
A.unlessB.in caseC.even ifD.once

分析 带着这张便条作为提醒,以防你在那儿购物时忘记买我们需要的东西.

解答 答案B.unless除非,如果不,在意义上相当于if…not,因此在有些场合中unless与if…not可互换使用,引导条件状语从句.in case"以防万一",引导条件状语从句;even if"纵然,即使",引导让步状语从句;once"一旦",引导时间状语从句.根据句子所表达的意思可知,前后两句话应该是逻辑上的条件关系,可排除C和D两项.再根据下文语境"we might forget to buy what we need while shopping"和句子所表达的意思可排除A,故答案B项正确.

点评 本题考查从属连词的用法.连词的用法辨析,要注意分析主从句之间的关系,再确定相应的连词,同时注意不同的连词的语义及用法区别.

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