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 water与endanger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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