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14.Poachers kill antelopes for huge profits,___ the extinction of the endangered species.(  )
A.speeding upB.to speed upC.having sped upD.speed up

分析 偷猎者为了获取大量的利润而捕杀藏羚羊,结果加速了濒危物种的灭绝.

解答 答案:A 
此处是现在分词作结果状语.现在分词和不定式都可做结果状语.但是有区别,现在分词作结果状语,表示自然而然的结果;不定式作结果状语表示出乎意料的结果.由前一句的内容可知,"大量捕杀"必然导致灭绝.故选A项.

点评 考查现在分词作结果状语.主要要区分开与不定式作结果状语的区别.

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