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
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
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。
答案:C