2. 外语
  3. I have______much time and thought on the problem, but I am no nearer to finding a solution.

I have______much time and thought on the problem, but I am no nearer to finding a solution.

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问题 I have______much time and thought on the problem, but I am no nearer to finding a solution.
选项 A、exposed
B、extended
C、exhausted
D、exerted
答案D
解析 动词词义辨析题。题意：“在这个问题上我已花费了很多时间和精力，但毫无进展。”D exert意为“使用，运用(以达到预定的目的)”，符合题意。A expose：使暴露，揭露。B extend：延伸，伸展。C exhaust：使精疲力竭，用尽。
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