题干
. Only when your identity(身份) has been checked, _____________________.
A：you are allowed i
B：you will be allowed i
C：will you allow i
D：will you be allowed i
答案(点此获取答案解析）
D
其中m>0，若方程3f(x)=x恰有5个实数解，则m的取值范围为 （ ）