题目

Alcohol is classified as a downer,and although it is legal,it can damage the liver and do great harm if________in large quantities. A.consume    B.to consume      C.consuming  D.consumed   答案: D 考查非谓语动词。从语意可知,本句中的it指alcohol,主语it与consume存在被动关系,因此应该使用consume的过去分词形式。
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