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- 1The river is very wide.None of us ( ) swim across it .A.can B.could C.be able to D.able to
- 2May I have ___ ,please?A.two piece of paper B.two pieces of papers C.two pieces of paper D.two
- 3Du you have some more paper?
- 4it is interesting 改为一般疑问句
- 5解方程:x/1*2+x/2*3+x/3*4+x/4*5+...+x/2007*2008=2007
- 6把一根5米长的铁丝平均分成6段,每段是多少米,每段占全长的几分之几?
- 7|1/2|+|1/3-1/2|+……+|1/99-1/98|+|1/100-1/99|=?运算规律
- 8禾、个、了、火可以加什么字,组成另一个字
- 9冰水混合物属于化合物吗?
- 10用一张长12.56厘米,宽6.28厘米的长方形卷形成圆柱,求卷成的圆柱的体积.