题干
— You don't look well. ?
— I have a sore back.
A：How are you
B：What's the matter
C：Can I help you
D：Who is speaking
答案(点此获取答案解析）
B
— You don't look well. ?
— I have a sore back.
A：How are you
B：What's the matter
C：Can I help you
D：Who is speaking
和直线
在
轴右侧的交点按横坐标从小到大依
则
等于( )