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

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

admin2010-01-15  22
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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