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After about 90 minutes in the air the plane landed safely back at Pudong Airport in Shanghai. The plane is a key symbol of Beijing's ambitions to enter the global aviation market.

Made by COMAC, it has been in planning since 2008, but the flight was repeatedly pushed back. For Friday's first flight, the plane carried only five pilots and engineers and took off in front of thousands of aviation workers and enthusiasts.

In an interview carried out in March but released on Chinese television shortly before the launch, test pilot Cai Jun said he had full confidence in the plane. "A pilot knows clearly the condition of a plane. He knows very well whether it will work. So I'm not afraid at all, but focusing more on whether the plane is in its best shape now," he said.

He also described halting an earlier test in late 2016 because of a problem with the brakes. "It's just like driving a car. I put the brakes on, and the plane started to shake," he said. He said he had to argue with the plane's engineers and help improve the design. "For the designers, the plane is their baby, which they believe is perfect. But our task is to tell them that their baby is not perfect, it has strengths and weaknesses, and they have to make improvements," the pilot said.

Orders have already been placed for more than 500 of the planes, with commitments from 23 customers, say officials, mainly Chinese airlines. The main customer is China Eastern Airlines. China has had ambitions to build its own civil aircraft industry since the 1970s. But the Y-10, built in the late 1970s, was impractical due to its heavy weight and only three of the aircraft were ever made.

1.How many people stayed in the Friday's first flight?

A One.

B Five.

C Ninety.

D One thousand.

解析：选B。细节理解题。根据第二段第二句的For Friday's first flight, the plane carried only five pilots and engineers可以得知只有包括飞行员和工程师在内的五名人员在飞机上，故选B。

2.What did Cai Jun pay attention to when driving the plane?

A The way how it was made.

B The brakes of the plane.

C The performance of the plane.

D The price of the plane.

解析：选C。细节理解题。根据第三段最后一句的So I'm not afraid at all, but focusing more on whether the plane is in its best shape now可以得知作为飞行员他关注的是飞机的表现如何，故选C。

3.Why was the flight repeatedly pushed back?

A The pilot didn’t have enough confidence.

B The engineers didn’t know how to design the plane.

C The condition of the plane wasn’t known.

D The plane was not in its best condition then.

解析：选D。推理判断题。根据文章第四段第三句的He said he had to argue with the plane's engineers and help improve the design可以得知是飞机没有在最佳状态，因此这是飞机推迟试飞的原因，故选D。

4.Who will buy the new kind of plane made by COMAC?

A Chinese television.

B China Western Airlines.

C Chinese airlines.

D Pudong Airport.

解析：选C。细节理解题。根据文章最后一段第一句的Orders have already been placed for more than 500 of the planes, with commitments from 23 customers, say officials, mainly Chinese airlines.可以得知该飞机的主要购买者是中国的航空公司，故选C。