- Could you come back home at three o'clock.
- _______. I'll be at a meeting at that time.
A:I'm afraid not
B:Yes. I hope so
C:I think so
D:I'm afraid so
如图,直线a、b被直线c所截,若a∥b,∠1=130°,则∠2等于( )
800÷4读作800除4.