The two balls fell ________the same speed and landed ________the ground at the same time.A.off;onB.

题目简介

The two balls fell ________the same speed and landed ________the ground at the same time.A.off;onB.

题目详情

The two balls fell ________the same speed and landed ________the ground at the same time.
A.off;onB.by;inC.with;onD.at;on
题型:单选题难度:中档来源:不详

答案

D 
at the same speed以同样的速度;on the ground在地面上。

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