Mary is as old as me.
Mary and I are at the same age
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- 2如图所示,在倾角为θ的光滑斜面上端系有一劲度系数为k的轻质弹簧,弹簧下端连一个质量为m的小球,球被一垂直于斜面的挡板A挡住,此时弹簧没有形变.若挡板A以加速度a(a<gsinθ)沿
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- 5When you moe somewhere new,the first thing for you is to find a place______.
- 6是I think everyone should have hobby.还是I think everyone should has a hobby.
- 7如图,在梯形ABCD中,对角线AC、BD相交于O点,OE平行于AB交腰BC于E点,如果三角形OBC的面积是115平方厘米,求三角形ADE的面积?
- 8【MnO4-】+【H2O2】+【H+】=【Mn2+】+【O2】+【H2O】 怎么用拆合法配平
- 912.把所有正奇数从小到大排列,并按如下规律分组:(1),(3,5,7),(9,11,13,15,17),(19,21,23,25,27,29,31),…,现用等式AM=(i,j)表示正奇数M是第i组第j个数(从左往右数),如A7=(2,3
- 10Do your homework first after school,Tom