题目内容
Though he failed in the experiment again and again, he didn’t______, and at last, he made it.
A. lose his heart B. lose heart
C. break his heart D. make up his mind
B
解析:
略
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题目内容
Though he failed in the experiment again and again, he didn’t______, and at last, he made it.
A. lose his heart B. lose heart
C. break his heart D. make up his mind
B
略