题干
—May I see your ticket, please? I think you ________ in my seat.
—Oh, you’re right. My seat is upstairs. I’m terribly sorry.
—Oh, you’re right. My seat is upstairs. I’m terribly sorry.
A：are sitting
B：sit
C：sat
D：have sat
答案(点此获取答案解析）
A
是双曲线
的左、右焦点，
为双曲线左支上
的最小值为
，则该双曲线的离心率的取值范围是 （ ）