题干
Our teachers support us in some ways.
A：give hope
B：give help
C：give up
D：give off
答案(点此获取答案解析）
B
Our teachers support us in some ways.
A：give hope
B：give help
C：give up
D：give off
和点
分别是双曲线
的中心和左焦点,点P为双曲线右支上的任意一点,则
的取值范围为 ( )