【題目】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】

考查動詞短語辨析。句意：微信是一種溝通軟件，其目的是打破溝通障礙。A. break up使破碎、分裂；B. break down損壞、消除、分解；C. break through突破；D. break into強(qiáng)行闖入。分析語境可知，作為溝通軟件的微信，目的使打破溝通障礙，所以用break down。故選B項。

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