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- 120÷(2÷0.3)÷(3÷0.4)÷(4÷0.5)÷(5÷0.6)÷(6÷0.7)等于几?要算式.
- 2a>sina,三角函数
- 3I guess ____(ski) is also very good.
- 4His sister is a member of the rock band.改为同义句His sister ___ ___ the rock band
- 5汤姆索亚历险记汤姆身上具有哪些可贵的品质?请写出作品中你熟悉的两个故事情节
- 6已知f(x)在实数集上是减函数,若a+b≤0,则下列正确的是( ) A.f(a)+f(b)≤-[f(a)+f(b)] B.f(a)+f(b)≤f(-a)+f(-b) C.f(a)+f(b)≥f(-a)+f(-b) D.f(a)+f(b)≥
- 7天平的左盘放重2N的物体,要使天平平衡,右盘先放入的砝码应该是?
- 8将1~9这九个数填入下图中,使三角形边上四个数的和等于19.且有一个顶点的数字为1
- 9一段40厘米长的圆柱形木头沿着其底面直径锯开,所得两部分的表面积之和比原来增加800平方厘米,求原来木头的体积是多少?
- 10she didn't go to school.i didn't go to school either.改为同义句.() she ()I went to school.