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【题目】严格地说,地球的形状是一个(

A.正球体 B.球体

C.圆 D.两极稍扁、赤道略鼓的椭球体

【答案】D

【解析】

试题分析:根据科学家们的测量,地球的极半径是6357千米,赤道半径是6378千米。所以地球是一个赤道略鼓,两极略扁的不规则球体。

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