Question

【题目】Despite barriers and hardships，they ______ the research on cloning tissues.

A. come up with B. catch up with

C. push ahead with D. put up with

Answer 1

【答案】C

【解析】考查动词词组。A. come up with跟上； B. catch up with赶上；C. push ahead with 推进； D. put up with忍受。句意：尽管遇到重重阻碍和困难，他们毅然进行克隆生物组织的研究。push ahead with毅然推进。根据句意可知选C。