单项选择题

Questions 11~13 are based on the following preholiday tips given by the Daily News Travel Information Line. You now have 15 seconds to read Questions 11~13. Which is the right thing to do on a long distance flight

A.Don’t eat much through the day.
B.Don’t sleep during the flight.
C.Don’t drink water during the flight.
D.Don’t walk around the cabin.