() 5. 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 题目和参考答案——青夏教育精英家教网——

题目内容

() 5. 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

5. B

(由题意可知不同国家的科学家都在努力想出一个好的方法来解决能源问题，come up with指“想出”，故选B。）

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