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

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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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