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

题型：不详难度：来源：

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。