Scientists from different countries are trying to a good way to solve the energy problem.A．keep up with B．come up withC．catch up withD．meet up with 题目和参考答案——青夏教育精英家教网—

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Scientists from different countries are trying to_______ a good way to solve the energy problem.

A．keep up with

B．come up with

C．catch up with

D．meet up with

试题分析：句意：来自于不同国家的科学家正在努力相处解决能源问题的好方法。A与……保持齐头并进B想出C抓住D碰见。根据句意选B。

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