Question

【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

Answer 1

【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。