题目内容：

    China Eastern Airline and other domestic airlines have begun to allow mobile phone use on their flights(航班) or announced plans to cancel the ban（禁令）.

On Thursday, China Eastern Airlines and Hainan Airlines began to allow passengers to use portable electronic devices (PED), such as smartphones and tablets, but phones still have to be changed to airplane mode（飞行模式）. China Southern Airlines and Xiamen Airlines announced Thursday they would allow mobile phone use on all their flights soon.

The permission comes after the Civil Aviation Administration of China（中国民用航空局） asked that the ban be canceled earlier this week. According to the guideline before, staffs in the planes needed to ask passengers to turn off any devices that could interrupt the flight, even airplane mode was not permitted.

Inflight wifi is available on 74 of China Eastern Airlines' aircrafts, covering all international routes and 166 domestic routes. Hainan Airlines has enabled inflight wifi on 17 of its airplanes.

"Before, I just slept aboard the airplane, sometimes read magazines in front of me and then had nothing to do. But now, I can use my social network accounts like Weibo or Wechat," said a passenger named Zuo, who took a flight with wifi from Shanghai Thursday.

Before 2018, mobile phone use on aircraft was banned over safety concerns. The ban is a common international practice, but with technological development and a higher demand from passengers, the ban has been canceled by some airlines.

Other Chinese airlines are also considering allowing mobile phone use. A number of airlines from other countries already provide inflight wifi service, an important factor for passengers choosing flights of different airlines.

1.Which airlines allow mobile phones to be used in the flight now?

A.China Eastern Airline and China Southern Airlines.

B.Hainan Airlines and Xiamen Airlines.

C.China Eastern Airline and Hainan Airlines.

2.When you took the plane, you were asked to ________ according to the old guideline.

A.turn off your smartphone

B.change your smartphone to airplane mode

C.interrupt the flight

3.What does the underline word “domestic” mean?

A.航班的 B.国内的 C.短途的

4.Which of the following is TRUE?

A.Passengers can call their friends during the flight according to the new rule.

B.Passengers used to have nothing to do but sleep during the flight.

C.Passengers were banned to use mobile phones before because of safety.

5.What is the main idea of the passage?

A.Airlines in China began to allow passengers to use portable electronic devices.

B.Civil Aviation Administration of China has canceled the ban.

C.Important factors for passengers choosing flights.