◎ 题干
Traveling __________ over 400 kilometers per hour, the train can complete the 30-kilometre journey in
eight minutes.
[     ]
A. with the speed  
B. in a speed  
C. at a speed  
D. for a speed
◎ 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“Traveling __________ over 400 kilometers per hour, the train can complete the 30-kilometre journey in eight minutes.[ ]A. with the speedB. in a speedC. at a …”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。