The computer is very useful , but it's ____ expensive for the poor man
A:a bit
B:a few
C:a lot of
D:too much
已知函数f(x)=|log2x|,正实数m,n满足m<n且f(m)=f(n),若f(x)在区间m2,n 上的最大值为2,则m,n的值分别为 ( )
下列说法正确的是( )