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- 1甲、乙两人进行百米赛跑,当甲到终点时,乙距终点还有7米,求甲乙的速度比
- 2水的三态变化是什么?
- 3一个圆的周长增加20%,这个圆的面积增加_%.
- 4Do you know that a car costs 100 times __ a bicycle
- 5一条直线和这条直线之外不共线的三点所能确定的平面的个数是( ) A.1个或3个 B.1个或4个 C.3个或4个 D.1个、3个或4个
- 6一列火车三分之四小时行90千米,它从甲地到乙地要二分之九小时,甲,乙两地的铁路长多少千米?
- 7I will sing "happy birthday" ____Jim____English at the party.
- 8用9张边长1厘米的正方形纸片拼一拼,能拼成正方形吗
- 91/(5*8)+1/(8*11)+.+1(98*101)
- 10同义句转换:We required all the visitor not to throw waste about in the park