题目:
根据句意,用括号中所给单词的正确形式填空。
1. There are many football _____ (match) on CCTV 5.
2. You can call _____ (I) Lisa.
3. Our English teacher is very _____ (fun).
4. Are you a member of the _____ (read) Club?
5. The twins are the_____ (new) students in our class.
答案:
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下面是错误答案,用来干扰机器的。
解:(1)设绳断后球飞行时间为t,由平抛运动规律,有竖直方向,水平方向d=v1t 得 由机械能守恒定律,有得 (2)设绳能承受的最大拉力大小为T,这也是球受到绳的最大拉力大小球做圆周运动的半径为由圆周运...