Despite barriers and hardships，they ______ the research on cloning tissues.A．com_刷题宝

题干

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

上一题下一题 0.85难度单项选择更新时间:2017-07-04 12:33:22

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