2. 职称英语
  3. A series of attempts______made, he came to a successful solution of the problem.

A series of attempts______made, he came to a successful solution of the problem.

游客2025-03-21  42
问题 A series of attempts______made, he came to a successful solution of the problem.
选项 A、to be
B、had been
C、were
D、having been
答案 D
解析 该题考查独立主格结构的用法，有一定的难度。make attempts to意思是"尝试着做某事"。结合后半句的时态我们可以推知前半句的时态应当是过去完成时，同时从句中a series of attempts充当逻辑主语，故需采用被动语态。综上分析，选项D为正确答案。译文：经过了一系列的尝试之后，他终于成功地找到了解决这个问题的方法。
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