A
Being a polite airline passenger starts with just a few easy steps.
Help your fellow traveler
While you're loading your carryon bag into the overhead space, offer to lift a fellow passenger's up there, too. Not only is it kind, but it could make the boarding process more efficient for everyone else.
Keep your personal things well, personal
It's important to be mindful of your personal belongings. Avoid hitting other passengers with your bag, as you walk down the aisles(过道), by keeping it in front of you and close to your body. And once you sit down, you should stay there, and make sure you have everything you will need for the flight once you settle in your seat. Reaching over other passengers to access the overhead storage during the flight is uncomfortable for everyone.
Respect your (limited) space
In the narrow space of an airplane, maintaining your personal space will go a long way towards making a smoother ride for everyone. Let the middleseat passenger use the armrests (it's the least you can do), and keep your legs within the width of the chair frame.
Be willing to swap seats with a family
Airlines sometimes reserve certain seats for special passengers or charge extra fees for adjacent(毗连的) ones，making it tough for family members to buy seats together. If you're traveling alone, offer to switch seats so that a family can sit beside each other; it's a kind gesture that they won't forget. But be sure to delay swapping until the plane has reached the safe altitude，as switching seats while everyone is boarding can be an inconvenience for those standing in the walkways.
21. To be a polite airline passenger, you need to do the following except________________.
A. lending a helping hand to your travelling companion
B. using the armrests to support your arms if you want
C. avoiding reaching over others to open the overhead storage
D. keeping your bag in front of you while walking down the aisles
22. If a man wants to swap the seat with you, you should__________________.
A. charge extra fees for offering adjacent seats
B. ask him to reserve the seat online in advance
C. offer your seat and stand in the walkways
D. put off swapping unless it is safe enough
23. Where can you most probably find the text?
A. In a daily newspaper. B. In a literature book.
C. In an airport guidebook. D. In an official document.
