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【题目】People are concerned about the air quality they _____________.

A.breathB.breatheC.breakD.bother

【答案】B

【解析】

考查动词词义辨析。句意:人们关心他们呼吸的空气质量。A. breath 名词,呼吸;B. breathe呼吸;C. break打破;D. bother烦扰。根据上文the air quality可知是指“呼吸的空气质量”,故排除CD选项;且此处主语为they,句子缺少谓语动词,故选B

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