A:12
B:8
C:6
D:4
⑴ ____
⑵ ____
⑶ ____
⑷ ____
⑸ ____
A. The car is on the box.
B. Look, the bus is in my bag.
C. —Mom, where is my ball?
—Look, It's under the chair.
D. —Excuse me, Amy. Can I use your pencil?
—No problem.
E. Where are my pants?
已知F1、F2分别是双曲线 x2a2−y2b2=1(a>0,b>0) 的左右焦点,A为双曲线的右顶点,线段AF2的垂直平分线交双曲线与P,且|PF1|=3|PF2|,则该双曲线的离心率是( )