一You talked just now.Try to talk less and drink more water.
A:many too
B:too many
C:too much
D:much too
_____should we accept the unfair agreement.( )
人的生命是从一个细胞开始的,这个细胞就是( )
下图所示的实验操作正确的是( )
已知a2+3ab+b2=0(a≠0,b≠0),则代数式 a2+b2ab 的值等于____.