猜你喜欢
- 1he came here in 1980.he has been a teacher for cver ten years 时态 翻译
- 2赞美长江或者黄河的诗歌
- 3He plays soccer pretty well because he keeps p----every day
- 4求函数f(x)=-x-1分之2在区间【2,6】上的最大值和最小值
- 5从甲地到乙地汽车第一天行了全程的百分之25,第二天行了剩下的百分之40,这时离乙地还有135千米,求距离
- 6用反证法证明过同一直线上的三点不能做一个圆
- 7水解和电离的区别
- 8Hello.Can I speak to Tom?____A.Yes,I am B.I am Tom C.This is Tom speaking D.That is Tom
- 9一块地用40%种冬瓜,其余的按3:2分别种西红柿和茄子,已知茄子种了0.6公顷,这块地有多少公顷?
- 10求由方程xy+yz+zx=1所确定的函数z=z(x,y),的偏导数f"xy