中国制造大型太阳能无人机首飞成功！

China’s large unmanned aerial vehicle (UAV) powered only by clean solar(太阳的) energy completed its first flight. The UAV, named “Qimingxing-50,” which means “Morning star-50” in English, was developed by Aviation Industry Corporation of China (AVIC). It is the first high-altitude(海拔) long-endurance (HALE) UAV developed by AVIC. Such UAVs usually fly at an altitude of 15-20 km at a low speed.

The Qimingxing-50 took off at 5:50 pm on September 3, 2022 from an airport in northwest China’s Yulin City, Shaanxi Province. It flew for 26 minutes before landing smoothly. The unmanned aerial vehicle was in good condition, with all the systems working normally. That marks the complete success of the first flight.

According to Zhu Shengli, head designer of the Qimingxing-50, the unmanned aerial vehicle can fly at high altitudes for a long period of time. It can perform tasks such as high-altitude reconnaissance(侦察), forest fire monitoring(监测), atmospheric environment monitoring, geographic mapping and communication relay(通信中继).

Wu Peixin is an aviation(航空) industry observer in Beijing. She said that there are no clouds above altitudes of 20 km and that the winds are not likely to change so the unmanned aerial vehicle is able to make full use of its solar cells to produce power. As long as the system works, the unmanned aerial vehicle can remain in the air for as long as required.

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1.Which is NOT true about the Qimingxing-50 according to Paragraph 1?

A It flew for the first time.

B It was named after a star.

C It can fly very fast in the sky.

D It is environmentally friendly.

解析：选C。C 细节理解题。根据第一段的“its first flight”“Qimingxing”“powered only by clean solar energy”可知，“启明星50”大型太阳能无人机是第一次飞行、它是根据一颗星星(启明星)来命名的、它很环保；根据最后一句的“at a low speed”可知它低速飞行。故选C。

2.At what time did the Qimingxing-50 land?

A At 5:26 p.m.

B At 5:50 p.m.

C At 6:06 p.m.

D At 6:16 p.m.

解析：选D。D 数字计算题。根据第二段第一、二句“The Qimingxing-50 took off at 5:50 pm on Saturday from an airport northwest China’s Yulin City, Shaanxi Province. It flew for 26 minutes before landing smoothly.”可知，下午5时50分，“启明星50”大型太阳能无人机起飞，空中飞行26分钟，因此它于下午6时16分平稳着陆。故选D。

3.What does Paragraph 3 mainly talk about?

A What the Qimingxing-50 can do.

B Who the Qimingxing-50 works for.

C How the Qimingxing-50 flies.

D Where the Qimingxing-50 stays.

解析：选A。A段落大意题。第三段主要描述了“启明星50”可以用来执行高空侦察、森林火灾监测、大气环境监测等工作。故选A。

4.From the passage, we can infer that________.

A more unmanned aerial vehicles will be created soon

B AVIC has made a lot of money from developing UAVs

C the system of the Qimingxing-50 will never go wrong

D the altitude at which the Qimingxing-50 flies brings advantages

解析：选D。D推理判断题。根据最后一段第二句可知，海拔20千米的高度没有云层，风速和风向改变不大，因此它可以充分利用太阳能电池发电，即它飞行的高度带来了有利条件。故选D。

5.From which is the text probably taken?

A A geography magazine.

B An entertainment magazine.

C A technology magazine.

D A fashion magazine.

解析：选C。C 推理判断题。本文主要描述了中国首个纯太阳能无人机首飞成功，属于科技领域，因此我们可以在科学杂志中读到本文。故选C。