题目内容
【题目】Alcohol is also classified as a downer, and although it is legal, it can damage the liver anddo great harm if __________ in large quantities.
A. consume B. to consume C. consuming D. consumed
【答案】D
【解析】if引导的状语从句的省略,补充完整应为if itis consumed. . . ,alcohol 与 consume 之间为被动关系。
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