4
A. The departure time is 10:10.
B. The arrival time is 10:10.
C. It leaves at 10:10.
D. It stops in Beijing at 10:10
5
A. No, it's a direct flight.
B. No, It's delayed for one hour.
C. No, it's a two-hour flight.
D. No, it's a morning flight.
6
A. Is it convenient for you?
B. Can I see Mark tonight?
C. I'm quite right.
D. That's quite all right.
Do all the research articles follow the IMRD model?
A. Yes
B. NO