◎ 题干
The two balls fell ________the same speed and landed ________the ground at the same time.
A.off;onB.by;inC.with;onD.at;on
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“The two balls fell ________the same speed and landed ________the ground at the same time.A.off;onB.by;inC.with;onD.at;on…”主要考查了你对  【介词和介词短语】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。