Choosethebestanswerwhichcancompletethesentence.Pleasedon'ttouchanyth

发布时间:2020-08-06 20:36:38

Choose the best answer which can plete the sentence.Please don't touch anything in the school labs ________ you're allowed to.A.ifB.unlessC.even ifD.even though

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B解析试题辨析
本题考查连词的使用.根据题干的含义“你不要动实验室的东西,除非允许你动”,而if“如果”,even if/though“即使”都不合题意.因此
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