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- 2he said that chinese history was very hard to understand.为什么用to understand?
- 3函数z=ln(x^2+y^2-2)+根号(4-x^2-y^2)定义域
- 4______!There is a car coming.
- 5直线y=kx+b于坐标轴的两个交点分别为A(2,0)和B(0,-3),则不等式kx+b≥0的解集是
- 6jane arrived here earlier than the other two(改成同义句)
- 7某班男生32人,女生比男生少25%,女生有多少人?
- 8I don't konw which one i will choose.I don't know _________one_______choose.
- 9如图所示,物体由静止从A点沿斜面匀加速下滑,随后在水平面上作匀减速运动,最后停止于C点,已知AB=4m,BC=6m,整个运动历时10s, 求(1)物体到达B处时的速度大小? (2)物体在AB段和BC
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