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9.When people think of factories,they think of clouds of dirty smoke or of pipes ______ chemical waste into rivers.(  )
A.pourB.to pourC.pouringD.poured

分析 当提到工厂,人们会想到浓烟滚滚或倾倒化学废物进河里.

解答 答案C.考查现在分词.pour into为固定搭配,意为"把…倒入…".这句话主句为"they think of clouds of dirty smoke or of pipes ______ chemical waste into rivers",其中谓语为think of,在谓语动词与pour之间没有并列连词,排除作并列谓语的可能性.or并列名词clouds of dirty smoke 和pipes.pipes与pour之间为主动关系,管道排放化学废物,故用doing表主动.选C.

点评 考查非谓语的题,要分清动词与其对象之间的主被动关系.

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科目:高中英语 来源: 题型:阅读理解

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