题目内容

【题目】Environmentalists observe that there is less fresh water for drinking and irrigation, thus ______ agriculture downstream.

A. endangered B. endangering

C. having endangered D. being endangered

【答案】B

【解析】考查非谓语动词。句意:环境学家观察到饮用和灌溉的淡水变少了,这样就危害了下游地区的农业。题目中less fresh waterendanger之间为主动关系,故使用现在分词作结果状语,选B项适合。

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