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- 1we must ask people not to cut down trees =we must -----people -------cutting down trees.
- 2对于任意实数a(a≠0)和b,不等式|a+b|+|a-2b|≥|a|(|x-1|+|x-2|)恒成立,试求实数x的取值范围.
- 3一根铁丝长2米,减去二分之一,还剩多少米
- 4It is such a fine weather .和It is such fine weather 哪个对
- 5将0,1,2,3,4,5,6,7,8,9分别填入如下图的十个圆圈内(每个数只准填一次).使得每个阴影三角形的三个顶点处的圆圈内所填的数之和都相等.请将相应填法用示意图表示出来.(填
- 6小学五年级数学下册长方体和正方体的表面积
- 7(1+x)的4次方=1000,求x,如果碰到3次方、5次方、6次方.之类的,x该如何求
- 8在初中化学中有哪些物质遇水放热?遇水吸热?
- 9Which books do you like?---The thick(one ones one's)
- 10怎样判断通电螺线管的磁场方向与电流的正负级的关系