What has many rings but is not a shopping mall? It is Saturn (土星). Its rings look really beautiful! But unluckily, they will disappear within 300 million years because of “ring rain”. Saturn’s rings are made of ice and rocks. The gravity (重力) pulls these things and makes them fall down to the planet. About 600,000kg of these things fall every minute! They could fill an Olympic-sized swimming pool in half an hour. Scientists don’t have an answer how the rings came out. Some think that large comets (彗星) hit Saturn’s moons. The moons then broke up into pieces and became the rings. Others think the rings are just part of Saturn. Saturn has seven main rings. They are different in size and width. E ring is the farthest from Saturn. It is the largest planet ring in our solar system(太阳系).
1. How many main rings does Saturn have?| A．300 | B．600,000 | C．7 | D．300 |
| A．The gravity. | B．Large comets. | C．The moons. | D．The solar system. |
| A．No, they aren’t. | B．Yes, they are. | C．The same. | D．Different. |
| A．出现 | B．消失 | C．增加 | D．减少 |
相似题推荐
【推荐1】Do you know anything about the Moon? How much do you know about it?
The Moon is an unfriendly place. There is no air or water. There are only lots of dust and mountains around on it.
But from the Moon, you can see our beautiful Earth. It is shining more brightly than the other stars in the dark.
| A．So there are no animals or plants there. |
| B．The Moon is also a very quiet world. |
| C．Do you want to go there? |
| D．You can take some photos with your camera. |
| E．When the Sun shines in the day, the temperature is very high. |
【推荐2】When you look at the sky at night, the Moon looks bigger than the stars. Actually (实际上), the Moon is much smaller than the stars and the Sun. But the Moon is much closer to us than any star. That is why it looks so big.
The Moon moves around the Earth. It makes one trip in about four weeks. The Moon looks flat (平坦的) to us. But it is a round (圆形的) ball, like the Earth.
People once thought the Moon had fire on it. They thought the fire made it bright. Now we know the Moon is like a mirror. It gets its light from the Sun.
The sunlight comes from the Sun too. The Sun gives us light and warmth (温暖). It makes plants grow and turns leaves green. It makes life possible on the Earth. It is a life-giving star.
1. How long does it take the Moon to travel once (一次) around the Earth?| A．Less than a week. | B．Nearly a month. |
| C．Half a year. | D．More than a year. |
| A．Because there is some fire on it. | B．Because it is near the Sun. |
| C．Because there is a big mirror on it. | D．Because it gets light from the Sun. |
| A．The Moon is much smaller than the stars and the Sun. |
| B．The Moon is much bigger than the stars and the Sun. |
| C．The Moon had fire on it. |
| D．The sunlight comes from the Moon. |
| A．Because it gives us water. |
| B．Because there are some living things on it. |
| C．Because plants and animals can’t live without it. |
| D．Because people have to live in the dark without it. |
| A．Interesting facts about the Moon | B．The Moon and the Sun |
| C．Light from the Sun | D．The Earth |
【推荐3】The 2022 Winter Olympics were held successfully. Athletes across the world came to Beijing and Zhangjiakou. Winter sports need to be in cold places. So, is it possible to hold the Winter Olympics on other planets?
Mercury水星
It’s the closest planet to the Sun. In the daytime, the temperature can be 430℃. At night it cools down to -200℃. There’s one area that the Sun can never reach. There’s lots of ice there. Maybe we could go speed skating there!
Mars 火星
The temperature on Mars is between -140℃ and 30℃. At the north and south poles of Mars, there are areas covered by ice and snow. Some of the ice is made of carbon dioxide, not water. There is also a big mountain called Mount Olympus. So maybe we can ski on Mars!
Pluto 冥王星
Pluto is a dwarf planet(矮行星) far away from the Sun. It’s very cold there, about -229℃. There’s lots of ice. It’s even harder than steel(钢铁). So maybe we could go sledding(滑雪橇) on Pluto.
1. Which planet is the nearest to the Sun?| A．Pluto. | B．Mars. | C．Mercury. | D．Earth. |
| A．430℃ | B．30℃ | C．-200℃ | D．-140℃ |
| A．Because some areas are covered by ice and snow. |
| B．Because some of the ice on Mars is made of water. |
| C．Because of the highest temperature on Mars. |
| D．Because of the highest mountain on Mars. |
| A．very cold only in the daytime | B．very cold all day and all night |
| C．very hot in the night | D．very hot in the daytime |
【推荐1】How green are you? Do you know how to be green?
We all need a healthy environment, but we produce waste every day and it often results in lots of pollution. In fact, even the simplest everyday activities can make a difference to the environment. Here are some ideas for you.
Reduce. It means “use less”. It suggests people should produce less pollution and throw less rubbish. People should reduce waste by buying fewer things. So before we are going to buy a new thing, try to think whether it is really necessary for us.
Reuse. Reuse means “use again”. It asks people to use things as long time as possible. When we buy things, guarantee that we really need them and we can use them for a long time. We should value them so that we can use them for a longer time. And if we can, we should repair (修理) them instead of throwing them away and buying new ones. Don’t use a paper cup or a paper bag. If we can use a china (陶瓷) up or a lunch box, we are doing something green and helpful.
Recycle. Recycle means “use in a new way”. Many people encourage people to recycle things. Look at these examples. People often recycle old or waste electrical things and try to create some new things with some parts from the old ones. Second, some people try to make some bags with old clothes. At last, people often clean the house or water plants with used water.
1. The writer talks about ________ ways to protect the environment in the passage.| A．five | B．four | C．three | D．two |
| A．Keep quiet. | B．Make sure. | C．Take action. | D．Take place. |
| A．telling a story | B．giving some idioms |
| C．drawing a picture | D．giving three examples |
| A．To encourage people to protect the environment. | B．To help protect animals. |
| C．To encourage people to produce more pollution. | D．To help create inventions. |
【推荐2】When talking about volleyball, people may think of the spirit of Chinese women’s volleyball team. On Sept. 29, the team won the gold medal with the record 11-0 at the 2019 World Cup. This is China’s fifth World Cup victory(胜利). The Chinese team has successfully got 11 straight victories, winning great honor for the country and the Chinese people. The players weren’t afraid of any competitors and fought hard with both their style and skills, showing great teamwork and a hard-working spirit.
The whole nation cheered for the players and hundreds of millions of people cried tears of joy. But few know how hard they worked to achieve success. Less than two hours before the games, three players couldn’t join in the game because of illness, and many of team members kept on playing even after being injured. “My leg hurt a lot, but I can stand it.” said Zhu Ting. The Chinese women’s volleyball team has been the nation’s pride since it first stood on the top at the World Cup in 1981. In the following 38 years there were ups and downs, but they put in hard work to win the game.
The spirit of the women’s volleyball team is not to win the championship, but to fight tooth and nail, no matter how difficult the situation is!” said head coach Lang Ping. The achievements those Chinese volleyball players made and their spirit were quite an encouragement for Chinese to work hard and get out of darkness.
1. How many times did Chinese women’s volleyball team win the World Cup?| A．Two. | B．Three. | C．Four. | D．Five. |
| A．the team didn’t lose any of its games during the 2019 World Cup |
| B．Chinese girls won the World Cup for the second time in 1981 |
| C．it was easy for the team to win the 2019 World Cup |
| D．before 1981, there were ups and downs for the Chinese women’s volleyball team |
| A．fight for the peace | B．keep winning | C．try their best | D．learn from mistakes |
| A．A Great Volleyball Coach, Lang Ping |
| B．The Fighting Spirit of Chinese Women’s Volleyball Team |
| C．How Chinese Women’s Volleyball Team won the World Cup |
| D．Chinese Women’s Volleyball Team Made the History Again |
Months ago, at an exhibition (展览会) in the UK, we saw some things about what was science in 1923. It gave us the idea for the question: What will science be in 2123? Then we asked some experts for their ideas.
Dr. Maggie Aderin-Pocock, space scientist:
I think people in 2123 will work hard to develop technology for interstellar (星际的) travel. If successful, we humans could get to our next-door star system Alpha Centauri not in 76,000 years but in just 20 years. It would change humans’ understanding of the universe (宇宙). And in 100 years, people may be able to answer the question “Are we alone in the universe?”
Professor Steve Brusatte at University of Edinburgh:
I think in 100 years, people will see big improvements on medical science. Well, of course, doctors in 2123 will still use many of the medicines created in the 2020s. And I think that if there is an exhibition (展览) of today’s things in 2123, it will have some masks (防护面具) we used during the COVID-19 pandemic (新冠疫情).
Professor Andrea Sella at University College London:
I think in the future, people will look back on the small steps of quantum (量子) computers and laugh at our worry about AI (人工智能). At the same time, they may have to stand more terrible weather. They will wonder why we didn’t act to stop the world from warming by 4℃—5℃.
1. ________ works as a space scientist.| A．Maggie Aderin-Pocock | B．Steve Brusatte | C．Andrea Sella |
| A．order robots to do everything for them |
| B．use many of the medicines created in the 2020s |
| C．wear masks used during the COVID-19 pandemic |
| A．worse | B．better | C．the same |
| A．What was life like in 1923? |
| B．What will science be in 2123? |
| C．What medicines will be used in the 2020s? |
