If you keep practising speaking French every day, you'll be better at it.
.( )
A.Practice makes perfect
B.Many hands make light work
C.Put all your eggs in one basket
D.Burn the candle at both ends
已知集合A={1,2,m2},B ={1,m}.若B⊆A,则m =()
计算的结果是()
已知函数f(x)=,则f(-2)等于()
下列四个函数中,是奇函数的是()
函数f(x)=的定义域是()