问题
选择题
This attempt turned out to be __________ failure, but, as we know, success often comes after __________ failure.[ ]
A. a; a
B. /; /
C. a; /
D. /; a
答案
答案：C
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This attempt turned out to be __________ failure, but, as we know, success often comes after __________ failure.[ ]
A. a; a
B. /; /
C. a; /
D. /; a
答案：C