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39.When a whip is snapped, it makes a loud cracking sound. Whips can accelerate to a speed of more than 700 miles per hour. At that speed a whip can break that sound barrier. In this passage, the word accelerate means _____.
(A) maintain
(B) speed up
(C) go slower
(D) exceed

答案：B
難度： 非常簡單
最佳解!
fairy45121 高一下 (2014/04/29)
accelerate    vi. 使增速(D) .....觀看完整全文，請先登入
3F
阿杭 高二上 (2020/05/11)

whip 鞭子

barrier 屏障

exceed 超過

4F
77老師 大二下 (2022/05/13)

* whip n.攪拌器、鞭子，snap v. 突然折斷

(D) exceed v. 超越
5F
112應屆上榜-熊熊寶貝 大一上 (2023/05/19)
單字 中文意思 例句
maintain 維持 It is important to maintain a healthy lifestyle for overall well-being.
speed up 加快速度 We need to speed up the production process to meet the deadline.
go slower 慢下來 The car in front of me suddenly stopped, so I had to go slower.
exceed 超過 The sales for this quarter are expected to exceed our projections.


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