题目内容
Most of us think that the ocean bottom is ___ smooth land.
A. made up for B. made up of C. made of D. made by
B
解析:
be made up of意思是:由…组成.
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题目内容
Most of us think that the ocean bottom is ___ smooth land.
A. made up for B. made up of C. made of D. made by
B
be made up of意思是:由…组成.