这道题考的是地球的公转速度：
地球以每秒29.79公里的速度,沿着一个偏心率很小的椭圆(实际上在近日点减速,远日点加速度)绕着太阳公转.1小时＝3600秒,那么地球就是每小时以107244公里的速度饶太阳转.
所以选择B.
We all know that the earth goes around the sun. How far does
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