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- 1The writer and teacher___asked>>>
- 2某张日历上,设3x3方阵的中心数是x,方阵中9个数只之和是126则可列方程怎么列
- 3甲、乙两车同时从A、B两地出发,相向而行,经过5小时相遇.相遇时乙车行了180千米,如果甲、乙两车的速度比是5:6,那么A、B两地相距多少千米?
- 4每支铅笔售价0.2元,每支钢笔售价4.1元,两种共买8支,用去9.4元,铅笔和钢笔各买几支
- 5What do you want to talk about?Seems there is some mistake in the sentence
- 6重50牛的物体放在水平地面上.当受到20牛竖直向上的拉力时,物体受到的合力为_.
- 7n为整数,(2n+1)的平方-(2n-1)的平方能被8整除吗
- 8英语.lucy likes comedies.lily likes comedies,too (合并为一句)
- 9填字成词:( )出于( )
- 10若A=2x²-4xy-2y²-2x+2y,B=4x²-6xy+2y²-3x-y.且(y+3)²+(x-4)的四次方=0