Successive committees have______ over this problem without finding a solution.

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问题 Successive committees have______ over this problem without finding a solution.

选项 A、reckon
B、ponder
C、speculate
D、presume

答案B

解析 近形近义题。[B] ponder意为“考虑,深思”,尤指长时间地仔细考虑某件事,以便做出决定,常用 ponder on/ over sth; [A] reckon 意为“猜想,估计”,指对人或事作全面“权衡”,把各方面意见考虑进去后得出结论。[C] speculate“思索,推测”,常指没有充分认识和充足事实地思考和推测,常用speculate about/on / upon sth; [D] presume“指望,寄希望于…”,常与on,upon连用。
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