分解因式:x3-25x=______.
x3-25x,
=x(x2-25),
=x(x+5)(x-5).
根据句意及首字母提示补全单词。
1. Miss Wang t_____ English in No.2 Middle School.
2. A _____ of boys are playing basketball happily.
3. — What's the w_____ like?
— It's cloudy.
4. I don't like the lion,because it is d_____.
5. His father is a doctor, he works in a h_____.
为促进安眠药毒物快速排出,应选用
A.2%~4%碳酸氢钠溶液B.温水或生理盐水C.3%过氧化氢溶液D.硫酸钠溶液E.硫酸铜溶液