问题
选择题
He has failed several times, he never gives up.
A. if B. so C. but
答案
答案：C
题目分析：if是否，如果； so因此；but但是。句意：他已经失败了几次，但是他永不放弃。故选C。
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He has failed several times, he never gives up.
A. if B. so C. but
答案：C
题目分析：if是否，如果； so因此；but但是。句意：他已经失败了几次，但是他永不放弃。故选C。