5 . China’s Cargo Spacecraft Sets New World Record

The Tianzhou 5 cargo spacecraft launched on November 12th docked with the Tiangong space station around noon, setting a world record for the fastest rendezvous and docking operations between the two spacecraft, according to the China Manned Space Agency.

The Tianzhou 5 was placed into a low-Earth orbit by a Long March 7 rocket that blasted off at 10:03 a.m. at the Wenchang Space Launch Center in Hainan Province.

After cargo craft entered the orbit, it traveled two hours and seven minutes to rendezvous (交会对接) with the Tiangong space station and then docked with the massive station at 12:10 p.m., the agency said in a news release.

The maneuvers have become the fastest rendezvous and docking processes for spacecraft, replacing the old record set by the Russian spacecraft Soyuz MS-17 on October 14th, 2020, when it used three hours and three minutes since its liftoff to rendezvous and connect with the International Space Station.

The manned space agency said the fast rendezvous and docking are key to establishing the capability to transport supplies to the space station in an emergency.

The cargo ship is carrying about 5.3 metric tons of materials, including living and mission necessities, scientific equipment as well as a mini experimental satellite. The craft also carries nearly 1.4 tons of propellants for the Tiangong station, the designers said.

Recently, topics related to the movie The Wandering Earth Ⅱ have been trending upwards on Weibo, a popular Twitter-like social media platform in China, one     1     another. Many audiences show great interest in the details and science and technology that appeared in the movie and     2     number of scientists took the trouble     3    (analyze) the possibilities of related technologies in the movie, including space elevators and underground city life.

Wang Yuanzhuo, a research fellow at the Institute of Computing Technology of I the Chinese Academy of Sciences, even drew     4    (picture) to explain the science and technology theories     5    (present)in the movie to the young audience in simple language.

“I     6    (receive)many questions from my daughter and other kids concerning the movie in the past few weeks,” Wang Yuanzhuo,    7     is also one of the movie’s science consultants, wrote on Weibo.

According to him, the key to realizing space elevators is to find a super-strong material that can he used as the elevator cable. The material needs to have the ability to maintain good performance when it     8    (expose) to terrible conditions in space. But it might be long before space elevators could     9    (actual) become a reality. Still, the     10    (discuss) of this technology itself reflects the ambition of mankind in the research and development of material science.

8 .

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Now suppose    1     it’s your turn to go to the moon, just like Edwin Aldrin and Neil Armstrong. It’s an important and exciting space travel,    2     mission is to explore and gather information for the scientists on the earth.

Before you leave your lunar lander, don’t forget your equipment! Remember    3     the moon has no atmosphere. An atmosphere is the envelope of gases     4     surrounds some planets. The earth’s atmosphere has oxygen,     5     we need to breathe. You will need your spacesuit and your oxygen tank,     6     will help you to survive on the moon’s surface.

Your spacesuit will keep your body safe on the moon,     7     the temperature can be extremely cold or extremely hot.

Now imagine    8     you are walking on the moon’s surface. You will be fascinated by the view of the sky,         9    is extremely different from that on the earth.

In the powdery, grayish moon dust, you will probably find some footprints     10    Neil Armstrong and Edwin Aldrin left many years ago. That’s because there’s no wind or water on the moon to wash the footprints away. The moon dust stretches as far as you can see.

As you walk along, you suddenly realize    11     you feel lighter. You can jump higher and throw farther. The reason     12     you can do jumping and throwing easily is     13       there is less gravity on the moon than there is on the earth.

Gravity is a force     14     pulls one object toward another object. Gravity makes you “stick” to the ground and makes your pencil fall to the floor     15     you drop it.