单选题

单选题 What is required to sit in the exit row?

A、 You have to know how to read instructions.
B、 You must be able to care for yourself and a family member.
C、 You should be a responsible person.
D、 You must be strong and robust.

【正确答案】 D

【答案解析】选项A错误，知道如何阅读并不是要求，文中要求可以理解和说英语。选项B错误，声明建议，需要照顾家人的人不要坐在紧急出口这一排。选项C没有被明确提出，只是坐在紧急出口处的人有责任帮助疏散。选项D正确，“你”必须足够强壮。

单选题 What is the main responsibility for those sitting in an exit seat?

A、 To inform the crew members of emergency situations
B、 To care for passengers who need special assistance
C、 To help in the evacuation of the plane
D、 To understand and speak English

【正确答案】 C

【答案解析】选项A错误，责任是明白并服从机组人员的命令。选项B不是必要条件。选项C正确。选项D不是主要的责任。

单选题 What should you do if you do not want to sit in an exit seat?

A、 Inform a crew member that you do not want to do so
B、 Move to another seat when you board the plane
C、 Ask another passenger to sit in your seat
D、 Explain the reason why to a crew member

【正确答案】 A

【答案解析】选项A正确。选项B和C都不是建议。选项D错误，解释是不必要的。