1 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Freedom above snow

With the Tokyo Summer Olympics behind us, people are turning their eyes to the 2022 Beijing Winter Olympic Games,     1     will start in five months. Freestyle skier Gu Ailing, 18, looks to be one of the superstars of the event.

Born to an American father and a Chinese mother, Gu     2     (decide) to compete for China in the 2022 Winter Olympics in June 2019. Just two months later, she bagged her first gold medal for China at the Australia New Zealand Cup.     3     strength continued to grow as she won one bronze and two gold medals at the International Ski Federation (FIS) Snowboard and Freeski World Championships in March.

People say she is     4     (talent). But Gu says that talent counted for (占据) “only 1 percent” of her wins, adding that her hard work is     5     counts. While going to school in San Francisco, Gu could only practice on weekends. She spent eight hours    6     (go) to the ski hill and back, doing her homework on the way and making full use of her time at the hill     7     (practice) skiing.

Gu said she wants to encourage more girls in China to try skiing and other extreme sports , many of which have only been known there for 20 years, according to the Olympics website. She said skiing gives her “    8     (free) and creativity”, especially when she perfectly controls her body and does tricks that others cannot do.

Now she     9     (prepare) for the Winter Olympics as a full-time athlete. “Of course, I want to win medals and even golds,” Gu said. “But what’s     10     (important) is to bring out my own style, enjoy the game and love the sport.”

2 . NASA selects university teams for space exploration

The moon's permanently shadowed areas, nearly 384, 400 kilometers away from home, are the closest water source outside the earth. The craters have been dark since billions of years ago. But now with student-developed technologies, more about them can be discovered.

Through the competitive Breakthrough, Innovative and Game-changing (BIG) Idea Challenge and the Space Grant project, NASA has awarded nearly $ 1 million to eight university teams. They will build sample lunar payloads (装备) and demonstrate innovative ways to study the moon's darkest areas.

"Its an exciting time for NASA and students across the country," said Drew J. Hope, Program Manager of Game Changing Development program. "Thanks to our partnership with the Office of STEM Engagement, this is the most money NASA has awarded in a student challenge directly connected to Artemis."

The chosen teams will work out ways to gather data in and around the craters, generate wireless power for future infrastructure, and enable autonomous mobility even in the most extreme environments. The research results could benefit NASA's Artemis Program and be used to study the moon ahead of a human landing in 2024 or help establish   sustained presence by 2028. Each team will receive different amounts of grants, based on the concept and budget they propose. They will develop and test the technologies in simulated(模拟的environments with the awards during the following 10 months, showing they are prepared for a possible lunar mission as early as 2023.Then in November 2020, a panel of NASA and industry experts will examine the teams' research and development results at a face-to-face design review.

"One of the most exciting things about this challenge is that several of the concepts, if proven to be valuable as a result of these awards, could eventually be integrated and operated together on the surface of the moon," according to Chad Rowe, Acting Manager of Space Grant project." These students are part of the Artemis generation and they are helping fulfil NASA'S mission needs today, while developing relevant hands-on experience that will prepare them for aerospace careers after graduation.

1. What are the university teams supposed to do?

A．Explore the mystery of space.	B．Participate in a competition.
C．Develop technologies to study the moon.	D．Challenge NASA'S Artemis program.

2. What does the underlined word "grants" in Paragraph 4 most probably mean?

A．Aid.

B．Funds.

C．Tests.

D．Chances.

3. When will the students' achievements probably be first put into use?

A．2020.

B．2023.

C．2024.

D．2028,

4. How can the students benefit from the project?

A．They can land on the moon

B．They can get paid while doing the job.

C．They can work In NASA after graduation.

D．They can gain experience for their future aerospace careers.

3 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

The Xi’an City Wall is the most complete city wall that has survived China’s long history. It     1     (build) originally to protect the city     2     the Tang dynasty and has now been completely restored (修复). It is possible       3     (walk) or bike the entire 14 kilometers.

We accessed the wall through the South Gate. The wall is 12 meters high and from here you can see streams of people moving inside and outside the City Wall.

After     4     (spend) some time looking at all the defensive equipment at the wall, we decided it was time for some action and what     5     (good) than to ride on a piece of history!

We     6     (hire) our bikes from the rental place at the South Gate. My bike was old and shaky     7     did the job. It took us about 3 hours to go all     8     way around the Xi’an City Wall. Supposedly you can do it in two hours, but we stopped at the different gates and     9     (watchtower) to take pictures or just to watch the local people going about their     10     (day) routines.

4 . American billionaire Elon Musk has demonstrated a technology designed to use a computer chip inside the head to control the brain. During a video demonstration on Friday, Musk provided details about the system, called Neuralink.

Musk says he hopes the technology can be used to treat neural disorders and help spinal injury victims regain body movement. Musk also believes the system could be used in the future to improve intelligence to help humans keep up with supercomputers and artificial intelligence (AI) technology.

During the show, Musk showed off a model of the Neuralink device. It is about 23 millimeters wide. It is designed to be implanted into a person's skull. Small wires would connect the device directly to the brain.

The Neuralink system is currently being tested in pigs, with plans to seek government approval for human testing sometime in the future.

A pig named Gertrude was also shown during the show. Musk explained that Gertrude had a Neuralink chip inside its head. The device is meant to record nerve activity in the pig's nose and mouth.

Musk said the company had three pigs, each with two chips. He described the animals as "healthy, happy and indistinguishable from a normal pig." Musk said the company was able to predict with "high accuracy" a pig's leg movement on a running machine using data from the chip.

Musk noted that Neuralink first wants to use the device on people with severe spinal cord injuries to help them talk and move using their brain waves. He said he is hopeful that, in the long term, those people could regain "full-body motion."

Some neuroscientists not linked to the company said the presentation suggested Neuralink had made great progress with the technology. However, they warned that many more studies will be needed to test the long-term success of such devices.

1. What good can the Neuralink device do to the disabled?

A．Making them think clearly.

B．Treating their diseases successfully.

C．Having them keep up with supercomputers.

D．Helping them to move again.

2. Which can best describe the pigs with a Neuralink inside their heads?

A．Normal.

B．Active.

C．Nervous.

D．Intelligent.

3. What do some neuroscientists think of Neuralink?

A．it has been a great success.

B．it will succeed very soon.

C．it has a long way to go.

D．It needs support from new theories.

4. Which of the following can be the best title for the text?

A．There Will Be Great Progress in Brain Science.

B．Musk Shows Technology Linking Computer to Brain.

C．Three Pigs Are being Tested Instead of Human Beings.

D．The Disabled Will Receive Better Treatment in the future.