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- 10.15等于( ):( )等于30除以( )等于15%
- 2在水平地面上,小明用300N的拉力拉动重为1000N的小车,5s内前进20m,过程中小明对车做的功为_J,功率为_W.
- 3形容人口才好的成语至少三个以上,
- 4平常我们所说的“铁比棉花重”的正确含义是( ) A.铁比棉花质量大 B.铁比棉花的密度大 C.铁比棉花的体积大 D.以上都不对
- 5已知数据-3,-2,1,3,6,X的中位数是1,求这组数据的方差和标准差
- 6有理数乘法结合律用字母表示_.
- 7The Frenchman didn't know how to _____ this word in Chinese .选speak,tell,say,talk中哪一个?
- 8Would you like _ pears,please? A:any B:some C:much D:little
- 9Here are some many presents____you____our best wishes.A.for/for B.with/with C.for/with D.with/for
- 10--- What do you think of the story?--- Wonderful!I haven't heard such a moving one?