A:get into
B:spot
C:have
D:get rid of
I don't know he will win tomorrow. I never doubt it will rain tomorrow.
已知函数f(x)=x2﹣ax,g(x)=b+aln(x﹣1),存在实数a(a≥1),使y=f(x)的图象与y=g(x)的图象无公共点,则实数b的取值范围为( )