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    【题目】Wechat is communications software whose purpose is to ______ barriers to communication.

    A.break upB.break downC.break throughD.break into

    【答案】B

    【解析】

    考查动词短语辨析。句意：微信是一种沟通软件，其目的是打破沟通障碍。A. break up使破碎、分裂；B. break down损坏、消除、分解；C. break through突破；D. break into强行闯入。分析语境可知，作为沟通软件的微信，目的使打破沟通障碍，所以用break down。故选B项。

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