— Did you succeed in the tickets?
— No, the tickets were sold out.
A:booking
B:seeing
C:making
选择:8746×7576 的积的末四位数字是( )
If _______ people follow me around, I will have ______ pressure.
如图,在三棱锥P﹣ABC中,∠ABC=90°,PA⊥平面ABC,E,F分别为PB,PC的中点.
(1)求证:EF∥平面ABC;
(2)求证:平面AEF⊥平面PAB.