设定义域为R的函数若关于x的方程有7个不同的实数解，则m=（ ）.
He the city since he graduated from college．（ ）
A．has leftB．left
C．has been away from
﹣Thanks for cleaning the room，boy．
﹣ ．In fact，it's my to do so．（ ）
A．Not at all，dutyB．All right，work
C．OK，job
The mobile phone sells for ¥ 5，000，it is much more than its real ．（ ）
A．costB．valueC．price
It's time for class，but the bell didn't ．（ ）
A．go onB．go offC．go through
The girl got the only chance to study abroad． proud her parents felt!（ ）
A．HowB．WhatC．What a
若关于x的方程
有7个不同的实数解，则m=（ ）.
粤公网安备 44130202000953号