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Scientists from different countries are ...

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

 

B 【解析】 试题分析:句意:来自不同国家的科学家们正在尽力想出解决能源问题的好的方法。A. keep up with保持不落后; B. come up with想出; C. catch up with赶上; D. meet up with偶遇,根据句意此题应选B。 考点:考查动词词组  
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