题干
_____ she is the only daughter of the boss, she started from the lowest position as a common employee.
A：Unless
B：While
C：Since
D：As
答案(点此获取答案解析）
B
_____ she is the only daughter of the boss, she started from the lowest position as a common employee.
A：Unless
B：While
C：Since
D：As
的左右焦点分别为F1，F2，点P在双曲线右支上，且|PF1|=4|PF2|，则此双曲线的离心率e的最大值为 （ ）