Scientists in some countries have done a lot of work to _____ the moon.A．coverB．_刷题宝

题干

Scientists in some countries have done a lot of work to _____ the moon.

A．cover

B．search

C．explode

D．explore

上一题下一题 0.85难度单项选择更新时间:2014-03-07 06:15:11

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