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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

 

【答案】

B

【解析】

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。

考点:考查动词短语的辨析。

 

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