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Engines are to machines hearts are to animals.? A.as B.that C.what D.which

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Engines are to machines hearts are to animals.? A.as B.that C.what D.which

Engines are to machines__________hearts are to animals.?

A.as B.that  C.what  D.which

 

试题答案

C

what引导表语从句,在从句中作表语。to machines和to animals作状语,意为“对机器来说”“对动物来说”。as用于引导定语从句,意为“正如”。that引导表语从句只起连接作用,不作任何成分。which引导表语,在从句中作主语、宾语、表语或定语,意为“哪一个”。?