The best solution to the problem can only be found by a process of trail and ______.

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问题 The best solution to the problem can only be found by a process of trail and ______.

选项 A、mistake
B、error
C、success
D、experiment

答案B

解析 trail and error是固定的用法,意为“反复试验,从失败中找出解决的办法”,又如: learn by trail and error。mistake意为“错误”;success意为“成功”;experiment意为“实验”,这三项在此句中均不合适。
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