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

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

admin2011-03-26  4
问题 The best solution to the problem can only be found by a process of trial and ______.
选项 A、error
B、mistake
C、success
D、experiment
答案A
解析 (error错误，trial and error反复试验，不断摸索)。句意为：只有进行一系列的试验，才能找到解决问题的最佳办法。B．mistake错误；C．success成功；D． experiment试验。
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