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Thisexperimentturnedouttobe

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Thisexperimentturnedouttobe

This experiment turned out to be ________ failure, but, as we know, success often comes after________ failure.

A.a; a                           B.不填; 不填

C.a; 不填                                D.不填; a

【回答】

解析:第一个failure意为“失败的事”,是可数名词,故用a;第二个failure意为“失败”,表示抽象意义,是不可数名词,故不用冠词。

*:C

知识点:冠词

题型:选择题

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