题目内容

Beijing has struggled with smog for years，which has__________ the sun and affected the health and quality of life of millions.
A．driven awayB．pushed outC．broken offD．blocked off
D               
             
试题分析：考查动词短语辨析。A．driven away开走；B．pushed out开除；C．broken off中断；D．blocked off阻挡。句意：北京这些年来一起受雾霾影响，阻挡阳光，影响人们的健康与生活质量。Which代指smog，雾霾阻挡阳光，所以选D项。          
考点 : 考查动词短语辨析
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