猜你喜欢
- 1数学题目解答---有人说,无论X取何实数,代数式X2次+Y2次-10X+8Y+45的值总是正数
- 2高度每升高1千米,地面温度降低6度,在海里是否也如此
- 3已知双曲线方程为x^2-(y^2/3)=1,过点A(2,0)作直线l与双曲线相交于P,Q两点,若|PQ|=8,求直线l的方程.
- 4NO more happiness than what I have got today求解释
- 5Do you have any butter?A:I don't have any butter.B:I haven't any butter.应该选哪个,为什么?
- 6( )伟业 ( )荒地 ( )产品 ( )胸襟 ( )矿藏 ( )道路
- 7六年级下册语文第十二课夜晚的实验课文分段
- 8The girl____the US is my son,s English teacher A.is from B.comes from C.from D.of
- 9为什么是“take your advice”and your troubles will be over
- 10已知,边长为一的圆内接正方形ABCD中,P为DC边的中点,直线AP交圆于E点.求弦DE的长