The student said there were a few points in the essay he______impossible to comp

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问题 The student said there were a few points in the essay he______impossible to comprehend.

选项 A、had found
B、finds
C、has found
D、would find

答案 B

解析 For some time now表示动作从过去持续到现在，又包括现在阶段正在进行，故用现在完成进行时，强调从过去到现在各国领导人都知道削减武器的必要性。B为答案。

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