若函数f(x)=x2+bx+c的对称轴方程为x=2,则( )
A:f(2)<f(1)<f(4)
B:f(1)<f(2)<f(4)
C:f(2)<f(4)<f(1)
D:f(4)<f(2)<f(1)
下列各句中,没有语病的一项是( )
____(tell) many times, he still repeated the same mistakes.