题干
— Millie, ________ late for school again.
— Sorry, I won't.
A：isn't
B：doesn't be
C：don't be
D：won't be
答案(点此获取答案解析）
C
— Millie, ________ late for school again.
— Sorry, I won't.
A：isn't
B：doesn't be
C：don't be
D：won't be
记
为它的导函数，若
在
上存在反函数，且
则
的最小值为( )www.www.zxxk.com
的方程有两个不等的实数根，则实数的取值范围为 （ ）