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。

The conclusion of the recent Beijing 2022 Winter Olympics on Feb 20 also marked the end of the volunteering work of Armenian twin brothers Vahan and Hayk Gehamyan, both of     1     are Fudan University undergraduates.

The brothers served as translators for Team Armenia during the Games and also     2    (offer) assistance to athletes.     3     their busy work schedule, the brothers enjoyed their time in the Olympic Village. They even made friends with their     4     (neighbor) — athletes from Finland and Ukraine — and cheered for these athletes when they were competing.

“It’s     5     great honor to serve as Olympic volunteers. We’re impressed by the charm of winter sports, such as the     6    (beauty) freestyle skiing and figure skating,” Hayk said.

“Moreover, we saw people from across the world     7    (live) under the same roof. It showed how the Olympic spirit of unity shines     8    (bright) throughout the games and beyond, which reminds us that people worldwide belong to the same human family,” he added.

Hayk said that they     9    (draw) to China as they wanted to experience the country’s fast economic development and culture. “We’re glad we made the     10    (decide) to come here,” he said.

2 . For the first time in the history of the Olympic Games, and in China, the Olympic and Paralympic Games Beijing 2022 will use natural carbon dioxide (CO₂) refrigeration systems at four of their ice sports competition and training venues.

The use of the natural CO₂ technology is replacing hydrofluorocarbons (HFCs), traditionally used to cool ice rinks（溜冰场）and proved to damage the earth’s ozone layer and contribute to global warming. HFCs have a warming impact that is up to four thousand times greater than CO₂.

“The Olympic Games are first and foremost a sporting event, but with their global visibility, they also provide an important platform to showcase sustainable solutions, said Marie Sallois, IOC Director for Sustainability.

The use of natural CO₂ refrigerants at the Games will help reduce carbon emissions equal to 3, 900 cars per year, cutting them to nearly zero. A similar carbon reduction could be achieved by planting about 1.2 million trees. The system also has a cooling efficiency that is 1.2 times higher than the traditional HFC refrigerants, and can maintain a temperature consistency of 0.5 degrees Celsius or less across ice surfaces, making the ice easier to skate on.

The carbon dioxide used for the technology is collected and purified from industrial waste gases, while the waste heat generated during the refrigeration process is recycled and used for the stadium’s ambient（周围的）heating, hot water for ice making and melting and showers, and the efficient control of indoor temperature and humidity all year around. It is estimated to save up to two million kilowatt-hours of electricity annually compared to the traditional HFC systems.

Beijing 2022 has committed to staging carbon-neutral Games, and the debut（首次亮相）of the new refrigeration technology is among many ways in which it is reducing the Games’ carbon footprint. Beijing 2022 will also power all its venues with renewable energy and use fuel-efficient and clean-energy vehicles for all passenger cars.

1. What do we know about HFCs?

A．It makes Earth warm.	B．It is a new technology.
C．It’s only used to cool ice rinks.	D．It will be used in Olympic Beijing 2022.

2. What’s the benefit of natural CO₂ refrigerants?

A．They can protect 1.2 million trees.

B．They cool more rapidly than traditional ones.

C．They will make carbon emissions zero.

D．They keep the temperature above 0.5 degrees Celsius.

3. How can the natural CO₂ technology save electricity?

A．It purifies its waste air.	B．It collects CO2 in the open air.
C．It controls indoor temperature.	D．It makes a good use of the waste heat.

4. What does the underlined word “staging” mean in Paragraph 6?

A．Controlling.	B．Winning.
C．Holding.	D．Playing.

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。

Although his quadruple Axel (阿克塞尔四周跳) challenge in Olympic free skate fell short, Yuzuru Hanyu still somehow made history.     1     a last-ditch attempt to save a medal, the “Ice Prince” took on figure skating’s most difficult jump－the 4 1/2-rotation quadruple Axel. Unexpectedly,     2     27-year-old under-rotated and stumbled upon landing. He fell again attempting a quadruple Salchow (萨霍夫四周跳).

Taking a bow to the     3     (recognize) from audience and touching the ice before stepping off the rink at the Capital Indoor Stadium, the two-time defending champion cut a lonely figure sitting by himself as he awaited his score,     4     (strengthen) the feeling that this could have been his swan song. “I made a big mistake in the quad Salchow, but I performed well to the music Heaven and Earth. I     5     (regret) the performance in the short program the other day, but I did my best today,” said Hanyu.

Hanyu started skating at the age of 4, and made his international debut(首次亮相) at the 2008 Junior Grand Prix Merano Cup, where he finished     6    (five). After joining the adult ranks, he quickly began to rack up(累计) silverware and milestones. He became the first Asian     7    (win) men’s singles Olympic gold at the 2014 Sochi Games.

China’s Jin Boyang, who performed     8     (energetic) and finished ninth, also expressed admiration. “It’s incredible that he took on the challenge of the quad axel at the age of 27 at his third Olympics. It shows his hunger to keep striving for     9     (great) performances, which is     10     the spirit of sports and the Olympics is all about. We can all learn from it,” Jin said.