题目内容
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。
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