单选题 What is the purpose of the announcement?

A、 To explain a delay
B、 To inform passengers of a change
C、 To explain some regulations
D、 To describe a promotion

【正确答案】 C

【答案解析】解析：题目是在询问这则公告的目的，应该仔细听整个公告的内容。公告中提到“Please fasten yourseatbelts．”，即要求系紧安全带，接着提到了在飞机上应该遵守的相关规定。所以正确选项是(C)To explain some regulations。

单选题 What does the speaker ask listeners to do?

A、 Turn off electronic devices
B、 Return to their seats
C、 Show their tickets
D、 Check in their baggage

【正确答案】 A

【答案解析】解析：题目是在询问发言人对听者的要求，应该仔细听公告后半部分中与要求相关的内容。公告中提到“We’d like to remind everyone that laptop computers，tablets，and cellular phonesshould be turned off during takeoff and landing．”，即要求在飞机起飞和着陆时关闭笔记本电脑、平板电脑和手机。所以正确选项是(A)Turn off electronics devices。

单选题 What does the speaker say about the aircraft?

A、 It is a new addition to the fleet.
B、 It has several emergency doors.
C、 It can hold more than 200 passengers.
D、 It departed late due to weather conditions.

【正确答案】 B

【答案解析】解析：题目是在询问发言人关于飞机的一些看法，应该特别注意与题目的中心语aircraft相关的内容。说话者提到“This aircraft is equipped with four emergency exit doors．”，即飞机内配有四个紧急出口。所以正确选项是(B)It has several emergency doors．。