The earth is now covered by space junk after nearly 70 years of space exploration. An accident in 2023 made the clean-up more difficult to start.
According to the European Space Agency (ESA), scientists plan on testing their “junk truck”, ClearSpace-1, in 2025. It’s a spacecraft with four arms that can catch debris (碎片) and bring it back to the earth. One of its tasks is to bring back VESPA, a 113-kilogram, two-metre-wide rocket part.
But it was hit by another piece of space junk in August 2023, creating new pieces. The ESA is now changing its clean-up plan. “We must … reduce the creation of new space debris and begin to actively reduce the influence on other objects,” said the agency.
Most satellites today are sent into the earth’s low orbit (轨道), which reach up to around 2,000 kilometres above the earth. There, spacecraft are most likely to hit each other. There may be as many as 170,000,000 pieces of space junk in orbit, according to the ESA. Big or small, any of the pieces can cause harm to a spacecraft. For example, if an object as large as 10 centimetres hits a satellite, the satellite will break apart.
____▲____ One popular plan is to send a spacecraft carrying harpoons (鱼叉) and magnets (磁铁). The craft would shoot the harpoon to stick into the debris before “throwing” it back to the earth. Magnets could move the debris, changing its direction. The debris would burn after entering the earth’s atmosphere (大气层) so there wouldn’t be much left when it reaches the earth. Scientists are also considering shooting lasers (激光) from the spacecraft to heat up the debris surface, creating a small push that would change the debris’ orbit. This change would allow the debris to be caught by the earth’s gravity.
Space junk can be very dangerous, and space agencies around the world are testing and planning the clean-up. But why haven’t they done anything yet? One reason is the high cost. But they will still keep on testing the cheap and fine clean-up.
1. What is the main purpose of ClearSpace-1?A.To test the junk truck in orbit. |
B.To bring VESPA back to the earth. |
C.To avoid the accidents in space. |
D.To clean up the debris from the earth’s orbit. |
A.Because it was hit by a satellite. |
B.Because it discovered more debris in orbit. |
C.Because it will create new space junk. |
D.Because more satellites are sent into the earth. |
A.As for the clean-up, scientists have some other ideas. |
B.It is too difficult to clean up all of the space debris. |
C.Scientists are trying hard to create more useful spacecraft. |
D.Scientists have met many difficulties in cleaning up the debris. |
A.The lasers from the spacecraft are to burn the debris. |
B.Space debris is dangerous and harmful to astronauts. |
C.Scientists have been doing research to clean up the space debris. |
D.The high cost of space cleaning will stop scientists from testing. |
相似题推荐
【推荐1】In many countries, governments advise people to buy electric(电动的)car and tell them that driving an electric car is good for the environment. But is it true?
The University of Minnesota recently studied the waste from different cars. The scientists found that sometimes, electric cars are more harmful than petrol(汽油)cars.
Surprising? Well, please pay attention to the word “sometimes”. Electric cars should be clean. The problem lies in the power that is used to charge(使充电)them. If the power comes from wind or solar energy(太阳能), electric cars will cause little pollution. However, if the power comes from coal, they will be very harmful. According to the study, pollution caused by these cars kills about 3,000 people a year. Pollution caused by petrol cars leads to about 880 deaths a year.
In fact, you can believe salespeople’s words when they say electric cars are clean. However, they are right only when the power used to charge their cars is also clean.
So how clean electric cars are depends on where people drive them. In France, more than half of the power comes from nuclear stations(核电站). Driving electric cars is good for the environment. In some other counties, however, power still mainly comes from coal. India, for example, depends on coal for 61% of its power. Only 2% of its power comes from nuclear energy. In countries like India, electric cars are not clean at all! They should prepare clean power for their electric cars.
根据材料内容选择最佳答案。
1. Why do governments advise people to buy electric cars according to the first paragraph?
A.To have a popular car. |
B.To save lots of money. |
C.To protect the environment. |
A.They use more coal to get power. |
B.They need two more drivers during the trip. |
C.They cause more people to die than petrol cars. |
A.Nowadays electric cars are not always clean. |
B.The power of most cars in France comes from nuclear stations. |
C.Salespeople advise more people to buy electric cars. |
A.To tell us petrol cars are very harmful to the environment. |
B.To explain why solar energy has a great advantage over coal. |
C.To tell us what kind of electric cars are friendly to the environment. |
A.In a storybook. | B.In a science newspaper. | C.On a notice board. |
【推荐2】Julia Hill is an American woman. When she was 23 years old, she heard that a company wanted to cut down part of a forest in California. In the forest there were lots of old trees. One of them was over 70 meters tall and more than 1, 000 years old.
Julia wasn’t happy about this. She travelled to California and climbed up the tree. “If I sit in the tree,” she said, “the company can’t cut it down.” At the beginning, Julia planned to stay in the tree for two weeks. She lived in a small tree-house and her friends helped her. They cooked food for her every day. She talked to her family and news reporters by phone. She stayed in the tree day and night.
The company tried to stop her. They used a helicopter (直升机) to stay near her tree-house for a long time. The helicopter was very noisy and it made a lot of wind. Julia didn’t like it, but she stayed in the tree.
In the end, she was successful. The company agreed not to cut down the old tree. Finally, after two years and eight days in the tree, Julia Hill got down and walked on the ground again. She and her friends were very happy.
1. Why did Julia go to California?A.To visit the forest. | B.To protect a tree. | C.To be a reporter. | D.To meet her family. |
A.They cooked food. | B.They built the tree-house. |
C.They invited news reporters. | D.They lived in the tree with her. |
A.In the forests there were lots of trees | B.One of the trees was over 70 meters tall |
C.A company wanted to cut down an old tree | D.One of the trees was more than 1, 000 years old |
a. A helicopter flew near Julia.
b. Julia lived in a tree-house.
c. Julia got down from the tree.
d. A company wanted to cut down the tree.
e. Julia went to California.
A.e, b, d, a, c | B.d, e, b, c, a | C.d, e, b, a, c | D.e, b, a, d, c |
The next time you sit down to a delicious dinner, ask yourself, “How much food will I be able to eat?” If you think about only taking as much food as you can eat, it will help cut down waste.
First,
A.the most important thing for us to remember is to be friendly to the environment. |
B.Some actions must be taken to reduce food waste. |
C.Every day, plenty of food goes uneaten and turns into rubbish. |
D.Rubbish and waste can be a big problem in large cities. |
E.we should try our best to work out the problem and make the city more beautiful. |
F.People often want more than what they really need. |
A study into how lazy British people are has found more than half of the adults are so lazy that they’d catch the lift rather than climb two flights of stairs.
Just over 2,000 people were quizzed by independent researchers in the Britain’s largest health center. The results were very surprising.
About one in six people who were asked said if their control was broken, they would continue watching the same channel rather than get up.
More than one third of those asked said they would not run to catch a bus. Worryingly, of 654 respondents (离婚被告) with children, 64% said they were often too tired to play with them.
We know that it’s no wonder that one in six children in the UK are very fat before they start school.
Dr Sarah, Dauncey, medical director of the center, said, “People need to get fitter, not just for their own health, but for their families, friends and pets, too.”
“If we don’t start to take control of this problem, a whole generation will become too unfit to perform even the most basic tasks.”
And Scotland’s largest city, Glasgow, was shamed as the laziest city in the UK, with 75% asked thinking they do not get enough exercise, followed by Birmingham and Southampton, both with 67%.
So there are some problems for the National Health Service, where fatness-related (相关的) illnesses such as heart disease and cancer have been on an increase for the past 40 years and are costing billions of pounds every year.
1. What does the underlined word “quizzed” mean?
A.questioned | B.answered | C.listened | D.heard |
A.they were often too busy to play with their children |
B.they were often so tired that they couldn’t play with their children |
C.they were often so sad that they didn’t want to play with their children |
D.they were often ill and they couldn’t play with their children |
A.All the adults in the UK are very lazy. |
B.Half of the children are very fat before they go to school. |
C.Pets will be in trouble if their owners don’t keep healthy. |
D.All people in Glasgow feel ashamed because they don’t get enough exercise. |
A.people may have heart disease |
B.people can work at home all the time |
C.people like shopping online |
D.people don’t like climbing the stairs |
A.The health service in the UK. |
B.A study of British people’s lifestyles. |
C.A study of British people’s laziness. |
D.The fatness problem in the UK. |
【推荐2】When you finish high school or university, is learning done? The answer is “no”. In many countries, people continue learning all their lives. Why is lifelong learning important? How can it help you? Let’s look at one example of lifelong learning in Japan.
Why is lifelong learning important?
You go to school and learn. You take tests. But learning doesn’t only happen in school. And learning doesn’t stop when you graduate from high school or college. You are learning all the time. For example, learning can happen when you go to a museum. It can also happen when you get a job. You learn when you play a sport or when you take a trip. Learning is life! We never stop learning. Every day, you can improve yourself by learning something new.
Lifelong learning in Japan
In Japan, lifelong learning is very important. People in Japan like to try new learning activities. Music, calligraphy (书法), flower arranging (插花), and foreign languages are some of their favorite classes. The Japanese take classes to improve their skills and learn new things.
Conclusion
When we graduate from school, we can continue to learn. Make lifelong learning one of your goals!
1. Why is lifelong learning important?A.It helps you improve yourself. |
B.It’s the best way to learn. |
C.It’s an important goal. |
A.get a job | B.learn new things | C.finish college |
A.Learning only happens in school. |
B.When we graduate from school, learning is done. |
C.Music, calligraphy, flower arranging, and foreign languages are popular classes in Japan. |
A.Go to a museum. | B.Take a trip. | C.Both A and B. |
A.Learning can be fun. |
B.People can learn all their lives. |
C.Finishing high school is important. |
【推荐3】Yun Siqi from Beijing is a 19-year-old young pianist(钢琴家). He started to learn the piano at age 4 and it has been his favourite hobby since then. Before that, he often heard his elder sister playing the violin and he loved the classical music she played. "I wanted to beat her in something and I chose the piano," Yun said.
At 4, several minutes of practice a day was enough. As Yum grew up, at ages 7 and 8, he had to practise for four hours a day. The time kept going up after Yun was 12. Now, he needs to practise at least seven hours every day. He sleeps for only five to six hours a day, but he is still full of energy(活力).
Yun never got tired of the piano. In fact, he had great fun playing it. "Music is my special luck, and it is a real enjoyment to be with it every day," he said.
Yun worked hard and soon he stood out. From 2013 to now, Yun shone at different music festivals, concerts and competitions. Yun said successes or failures(失败)were not important and they would not affect his understanding of music or his plan for the future. "If you lose, think carefully about it, and if you win, just work harder," the young pianist said "I still need to practise more to become better, to bring out the real beauty of classical music through the piano. It may take a lifetime."
1. Yun Siqi began to learn the piano in___________.A.2003 | B.2005 | C.2007 | D.2009 |
A.he was not able to play the violin |
B.it was easy to learn to play the piano |
C.he wanted to be better than his sister in something |
D.his sister refused to play his favourite classical music |
A.He lived a happy life at the age of 4. |
B.He was not good at playing the piano. |
C.He practises playing the piano very hard. |
D.He doesn't have enough sleep but he is healthy. |
A.允许 | B.维持 | C.放弃 | D.影响 |
A.Yun played the piano really well. |
B.Yun was tired of playing the piano. |
C.Yun didn't think he needed more practice. |
D.Yun said one should work harder if he lost. |
![]() Zhang Yufei has made a name for herself as the new butterfly queen at the National Swimming Championships(锦标赛). During the nine days of the event, she won five gold medals and a silver one. “With the Olympic Games drawing near, I feel more and more nervous, but I’m doing everything I can to relax and to focus on my game.” Zhang says. All eyes will be on the 23-year-old girl to see if she will pick up two gold medals in Tokyo. We know her dream came true. |
![]() The Bulgarian national qualification contest, of the 20th, “Chinese Bridge”, a major international Chinese professional competition for foreign university students, was held in Sofia on Sunday. The event, organized by the Chinese embassy(大使馆) in Bulgaria and the Confucius Institute in Sofia, was COVID-19, with seven students from three universities attending. The “Chinese Bridge” competition is organized every year to inspire foreign students to learn Chinese and improve their understanding of Chinese culture. |
![]() Tianwen I landed on Mars(火星) on May 15, 2021 successfully. It’s China’s first probe(探测器) to land on a planet other than Earth. China named its first Mars exploration mission(任务) Tianwen I on April 24, 2021, China’s fifth Space Day. The name comes from a poem of the same name by Qu Yuan, one of the greatest poets of ancient China. In his poem, Qu Yuan asked questions about the sky, stars, nature and the world around us. He questioned traditional ideas and looked for the truth of the universe. |
A.It was organized by Bulgarian people. |
B.It was organized to inspire foreign students to learn Chinese. |
C.Seven students from Sofia came to China to attend the competition’ |
D.“Chinese Bridge”, a major international Chinese professional competition for Chinese university students. |
A.Three. | B.Four. | C.Five. | D.Six, |
A.A teacher. | B.A coach. | C.A swimmer. | D.A student, |
A.It was named by Qu Yuan. | B.It landed on Mars for the first time. |
C.It’s China’s first probe. | D.It comes from the name of Qu Yuan’s Tianwen. |
A.On May 24th. | B.On May 15th. | C.On: April 24th. | D.On April 15th. |
【推荐2】JIUQUAN SATELLITE LAUNCH CENTER, China China sends off its youngest-ever team for its space station on Thursday. It is part of the country’s plan to put astronauts on the moon before 2030.
The China Manned Space Agency said the average(平均的) age of the three﹣member team is the youngest since the launch of the space station. Their average age is 38, state media China Daily said. The three astronauts are Tang Hongbo, and Jiang Xinlin. They will replace a team that has been on the station for six months. The new team will perform experiments in space medicine, space technology(设备) inside and outside the station.
In 2022, the Chinese government built its own space station after it was not permitted to join the U. S. led International Space Station. The Americans worried that the Chinese space program was under the control of the People’s Liberation Army.
China’s first manned space mission(任务) in 2003 made it the third country after the former Soviet Union and the U.S. to put a person into space using its own resources.
Although the American space program is believed to be far ahead of China at this time, China has made some important steps. They include bringing back samples(样本) from the moon’s surface for the first time and landing a vehicle(运载工具), meanwhile, aims to put astronauts back on the moon’s surface by the end of 2025.
In addition to their moon programs, the two countries have also independently(独立地) landed vehicles on Mars. And China plans to follow the U. S. in landing a spacecraft on an asteroid(行星).
1. When does China plan to put astronauts on the moon?A.Before 2030. | B.Before 2025. | C.Before 2040. | D.Before 2050. |
A.They stayed at the station for six months. |
B.They will do experiments in different areas. |
C.They are the youngest astronauts at the age of 38. |
D.They will use the equipment to repair the station. |
A.China was controlled by the American space program. |
B.China wanted to challenge the US in space exploration. |
C.China wanted to have control over American space program. |
D.China was not allowed to join the International Space Station. |
A.China lands a vehicle on the far side of the moon. |
B.China brings back samples from the moon’s surface. |
C.China has taken important steps in space exploration. |
D.China put astronauts on the moon’s surface before 2030. |
A.They landed vehicles on Mars independently. |
B.They built a joint International Space Station. |
C.They landed a spacecraft on an asteroid. |
D.They launched their first manned space missions. |
【推荐3】Astronaut(宇航员)Wang Yaping, together with Zhai Zhigang, two of the three-member team at China’s new Tiangong Space Station, successfully went on a 6.5-hour spacewalk in the early morning of Nov. 7 in 2021.
So what is a spacewalk? Any time an astronaut goes out in spacesuits, it is called a spacewalk. How do astronauts go on spacewalks? They wear spacesuits to keep themselves safe.
Inside spacesuits, astronauts have the air they need to breathe(呼吸)and the water they need to drink. Astronauts put on their spacesuits some hours before a spacewalk. They use safety tethers(系绳) to stay close to their spaceship. The safety tethers keep astronauts from floating away. Astronauts use tethers to keep things from floating away, too.
How do astronauts train for spacewalks? One way is by going for a swim. Floating in space is a lot like floating in water. Astronauts practice spacewalks underwater in a large swimming pool. They train seven hours in the pool for every one hour they will spend on a spacewalk. Another way to train astronauts is by using virtual reality(虚拟现实). It looks and feels just like a spacewalk. Astronauts wear helmets(头盔) and special gloves as well. What they will see during a spacewalk is shown inside the helmets.
So far, astronauts from different countries have done over 220 spacewalks. Only 15 women did spacewalks before. Wang is the “16”. She made history Sunday when she became the first Chinese woman to go on a spacewalk.
根据短文内容,选择最佳选项,将其标号在答题卡上涂黑。
1. How many Chinese astronauts went on a spacewalk on Nov. 7, 2021?
A.One. | B.Two. | C.Three. | D.Four. |
A.漂走 | B.游走 | C.溜走 | D.消失 |
A.Wang’s first spacewalk lasted for 6 hours. |
B.Spacesuits help astronauts to stay safe in space. |
C.Virtual reality is used to train astronauts underwater. |
D.Wang Yaping is the fifteenth woman spacewalker in the world. |
A.In a story book. | B.In a cook book. | C.In a travel book. | D.In a science book. |