Say hello to Changesite-（Y）— the sixth new lunar mineral（月球矿物）!
Chinese scientists found it in moon samples（样品）brought back by the Chang’e 5 lunar probe in December 2020. It has become the first lunar mineral found by Chinese scientists, making China the third nation in the world, after the United States and Russia, to have achieved such a success, reported China Daily.
Changesite-（Y）looks crystal（晶莹的）clear like a diamond. But its chemical content is different from any other known mineral.（A）It has a high level of rare earth（稀土）, reported China Science Daily. Li Ziying, chief scientist of the lunar sample research, said that the finding of this new mineral will help researchers study the history and physical traits（特征）of the moon. The value of the rare earth in（B）it will also be studied.
（C）Besides the new mineral, scientists also measured the content（含量）of helium-3（氦-3）from the Chang’e 5 samples. Helium-3 is a valuable fuel（燃料）that can provide safer nuclear energy（核能）. It is not radioactive（放射性的）and would not produce dangerous waste. On Earth, we have only 15 to 20 tons of helium-3 that can be used. But after studying the moon’s soil, scientists said there could be at least 1 million tons of helium-3 on the moon. That’s enough for all people on Earth to have clean energy for 10,000 years!
1. 把文中（A）处画线句子翻译成汉语。2. 写出（B）处画线单词指代的内容。
3. 把文中（C）处画线句子翻译成汉语。
4. 找出文中提到的地球和月球上可被利用的 Helium-3 的含量。
5. 简要概括本文大意（短语和句子均可）。
相似题推荐
Venus (金星) is close to the earth. It is the second planet from the sun. The earth is the third planet from the sun. Venus is similar (相似的) to the earth in size and mass (质量). It is often described as the earth’s “sister”.
Scientists have been learning about Venus for a long time. First they looked at Venus through telescopes (望远镜). But Venus is covered with thick clouds. Scientists could not see Venus well through the clouds. So they made guesses about it.
For a long time, scientists thought that Venus had water and plants. They thought Venus might have animals too. But they didn’t know for sure.
Then scientists found a way to learn more about Venus. In the 1960s, they began sending probes (航天探测器) to Venus. The probes flew through the thick clouds. They took pictures of Venus up close. They found out many things too. The probes sent the pictures and things they found out back to the scientists.
The scientists learned a lot from the probes. First they learned that most of their guesses were not right. And they learned that Venus is very hot.
After that, scientists knew they could not send people to Venus. But they still wanted to know more about it. So they sent new probes. These new probes took great pictures of the planet. The pictures showed that Venus has plains (平原) and mountains! And in some ways, Venus looks like the earth.
1. How are Venus and the earth similar?2. Why is it hard to see Venus well through a telescope?
3. When did scientists begin to send probes to Venus?
4. Can the scientists send people to Venus?
5. What does Venus have?
【推荐2】Have you ever wondered what it would be like to live in space? The most important thing to remember about living in space is that there is no gravity. That means astronauts can’t do a lot of things that you do easily in your daily life. For example, astronauts can’t pour themselves a cup of juice the way you can. Why? Because gravity makes the juice pour from the bottle into your cup. Astronauts can’t rely(依靠) on gravity. Astronauts can’t lie on beds and sleep the way you do because gravity is what holds you to your bed.
So how do astronauts live in space? Eating in space is like eating on earth in some ways. Food like rice and mashed(糊状的) potatoes sticks to spoons, so it doesn’t float away. Other foods come in cans or packages(盒). So they don’t float away, either.
There is no gravity in space, so astronauts do not have to sleep on beds or the floor. They can sleep anywhere they want, and they can sleep in any position they want. They usually use sleeping bags. They simply tie their sleeping bags to a wall, or a bed. That way, they don’t float around and bump(撞) into things while they are sleeping.
Astronauts are very busy people. They have jobs to do, and they work very hard. But they also need to relax sometimes. Astronauts usually get to talk to their families on a video call once a week. They also get to stay in touch by email. Astronauts can bring chess and other games with them. Some even bring musical instruments. Astronauts also watch movies and news programmes. Sometimes they talk to schools and news reporters, too. Astronauts may have a lot of work to do, but they also find time for fun.
根据短文内容，回答下列问题。
1. What’s the most important thing to remember about living in space?
2. Why doesn’t food like rice and mashed potatoes float away?
3. What do astronauts usually use when they sleep?
4. How often do astronauts usually get to talk to their families?
5. What do you think of the life in space?
【推荐3】Is there intelligent (有智力的) life on other planets? For years, scientists said “no." or “we don't know." But today this is changing. Seth Shostak and Alexandra Barnett are astronomers(天文学家). They believe intelligent life exists (存在) somewhere in the universe. They also think we will soon contact these beings(人：生物).
Why do Shostak and Barnett think intelligent life exists on other planets? The first reason is time. Scientists believe the universe is about 12 billion years old. "This is long enough for other planets to have intelligent life," say Shostak and Barnett. The second reason is size—the universe is huge. "Tools like the Hubble Telescope(哈勃望远镜) have shown that there are at least 100 billion galaxies," says Shostak. "And our galaxy, the Milky Way, has at least 100 billion stars. Some planets going around these stars might be similar to Earth.
In the past, it was hard to look for signs of intelligent life in the universe. But now, powerful telescopes(高倍望远镜) allow scientists to discover smaller planets—the size of Mars or Earth—in other solar systems. These planets might have intelligent life.
Have beings from space already visited Earth? "Probably not," says Shostak. "It's a long way. However, intelligent beings may contact us in other way, such as radio signals(信号). In fact, they may be trying to communicate with us now, but we don't have the right tools to receive their messages. However, this is changing. By 2025, we could make contact with other life forms in our universe and we might help each other.
1. How many galaxies are there in the universe?2. Which galaxy is Earth in?
3. What allows scientists to discover smaller planets?
4. Why haven’t beings from space visited us yet according to Shostak?
5. What do you think of intelligent life on other planets in our universe?
【推荐1】Can plants talk? Modern research has found something amazing: they do communicate with each other.
It has been known for some time that plants use chemicals (化学物质) to communicate with each other. This happens when a plant gets hurt from insects. The plant gives out chemicals from the leaves that are being eaten. This is like a warning, or a call for help: “I’m getting hurt!” When another plant gets the chemicals, (A) it starts to give out its own, different chemicals. Some of these chemicals drive insects away. Others draw the attention of the wasps (黄蜂)! The wasps kill the insects that are eating the plants. Scientists hope to learn more about this plant warning system, so that we can use it to grow more crops (庄稼).
More surprisingly, plants also use sound to communicate. People can’t hear these sounds; but plants are making them. Some plants make noises with their roots. Chili (辣椒) plants do this. Some trees make noises when there is not enough water.
Most surprisingly of all, plants have an amazing system of communication that can connect nearly every plant in a forest. Scientists call this system the “wood wide web”. The wood wide web is connected underground by fungi (霉菌). It connects the roots of different plants with each other. It is in some ways similar to the Internet we use. Using the wood wide web, plants can share information and even food with each other. However, it may lead to bad results. Plants may use it to steal food from each other, or spread chemicals to hurt other plants. Perhaps one day scientists will learn how to create a “firewall” to help stop the “action” within the wood wide web.
Scientists are learning more every day about the secret ways in which plants talk to each other. Maybe one day we will know enough about plant communication to be able to talk with them ourselves.
1. What will plants do when they get hurt from insects?2. 从文中找出 (A) it指代内容。
3. 从文中找到与句子 “In the future, we may have a wide knowledge about how we can communicate with plants.” 意思相同或相近的句子。
4. What is the main idea of the passage? 不超过10个单词
5. 根据短文内容填空，每空不超过3个单词。
To our surprise, the system of plant communication which is called
Connecting with Nature
How do you feel when you hear birds singing freely in the trees? What’s your feeling when you see butterflies dancing slowly and lightly in the wind? Whether you love researching the outdoors or watching far away, getting close to nature can take your mind off your worries and make you feel relaxed.
What is nature?
Nature means the world around us that is not man-made, including birds, mountains, trees, the sea and the stars. It’s also a force that controls things like weather. We can find nature wherever we are and wherever we go —beaches, gardens, parks, rivers, and even unexpected places like cracks (裂缝) in the stones.
Why does nature make us feel good?
Spending time in nature brings peace, joy and wonder to our lives. It takes us outdoors, gets us active and lets us care more about the environment. Even a little gift of nature can make us feel free and hopeful, such as breathing in fresh air, listening to the wind in the trees or standing at a mountain. Ralphie, who is 10, likes being close to nature on a bike with his family. He says, “It makes us feel happy and takes our mind off things because we have to pay attention. We are away from traffic and we hear more birdsong and see more wild animals.”
How can we feel closer to nature?
Feeling closer to nature is easy. We can build a connection with nature wherever we are using our senses. Try listening closely to birdsong, smelling flowers and feeling sand between our fingers. Paint a picture and take photos of the natural places that we like best. They may help us feel closer to the natural world. It’s important to try and connect with nature, notice its beauty and how it makes us feel.
Connecting with Nature | |
Introduction | ★ Take your ★ Make you feel relaxed |
Definitions (定义) | ★ The world ★ A |
| ★ Bring peace, joy and wonder to our lives ★ Take us outdoors, get us active and let us ★ Feel free and hopeful when breathing in fresh air, | |
Ways | ★ ★ Use our ★ Listen closely to birdsong, smell flowers and ★ Paint a picture and take photos of our |
Blood donation, also called blood banking, is a wonderful thing to do. It is an easy and direct way to help the community. It helps to save lives and helps those who are in need of blood but poor or the heavy loss of blood during operations or in accidents.
You are able to give or donate blood every three or four months. Blood donation is not a big problem, but you need to keep a few points in mind.
Before donating blood, make sure that the ferrum（铁）level in your body is high enough and for that you should take a healthy diet（饮食）. After having a balanced diet you will feel strong and comfortable to donate blood. Then, you will not feel weak.
For a good blood flow（流动）in your body, drink at least 6-7 glasses of water every day. A day before and after giving blood, don’t drink wine. Do not smoke half an hour before giving blood.
When you are going for blood donation, be relaxed. During the blood donation activity, breathe deeply and try to calm yourself. Don’t join in some other activities.
When you donate blood, you are able to save someone’s life. Blood donation is very simple and fast, but you need to take care of yourself after donating blood. The following are a few tips that will help you.
Take a rest for 15 minutes after the donation. It helps you to feel relaxed.
Eat something and drink juice before leaving the blood donation centre. Make sure that you have meals after donating blood. If you want to smoke, you should wait for one hour after the process. Don’t do activities like driving right away.
Finally, take pride in yourself because you have done a great thing in helping to save someone’s life. Blood donation is a very important activity.
Blood donation | |
The | ●Help the community. ●Help those people who ●Give yourself a |
Before the donation | ●Take a healthy diet for a ●Make sure you are in good ●Drink at least 6-7 glasses of water daily for a good flow of blood. ● |
| ●Relax and take a ●Never take | |
After the donation | ●Take a rest and have something before leaving. ●Don’t smoke ●Don’t join in some activities like driving. |
We spend one third of our lives in bed! Everyone needs a relaxing sleeping environment. There is no doubt that the design of your bedroom is really important. But how? Here are some golden rules to remember if you are decorating your bedroom.
Choose a proper color
Color is the key! Choosing the right color of your bedroom should be the first decision when designing the space. A general rule is to avoid using overly bright colors in it. You might be pleasantly surprised when you try out the colors that bring you peace.
Light it up
It is important to choose the correct lighting when designing a bedroom. Besides practical ceiling lighting(天花板照明), lamps and floor lamps can also make it easy for you to get into a sleep in the evening. So don’t forget to introduce smaller pockets of light around the room.
Create space to breathe
A tidy room helps you feel calmer. Please remember to reduce the unnecessary furniture(家具) and choose the one with doors to hide away the messy clothing shelves. The less furniture you have, the better your room will be, as you will open up floor space to allow the room to look bigger and less crowded.
Give it a soft touch
The material of bedding can bring you different sleep feelings. Something soft is always the first choice. For example, good quality pillows(枕头) will make you relaxed and suit almost all requirements. A well-chosen duvet(羽绒被) will keep you sleeping through the coldest winter nights, and it won’t be too hot or heavy during the summer.
In a word, the standard of designing your bedroom is to keep it comfortable.
How to make your bedroom relaxing | |
Golden rules | Detailed suggestions |
| Choosing a proper color | Use the peaceful colors |
| The right lighting is important for your bedroom design. Smaller pockets of light can help you go to sleep more easily. | |
| Creating pace to breathe | Reduce the unnecessary furniture to make bigger space. |
| Giving it a soft touch | Different sleep feelings can Good quality pillows can help you relax. A well-chosen duvet is always suitable in winter or in summer. |
The standard of your bedroom design is to keep it comfortable. | |
A new coffee shop on Shanghai’s Yongkang Road has no seats or tables, and its shopfront is just a wall with a hole. Through the hole , a furry bear paw hands out coffee. People simply scan a QR code (扫二维码) to place their orders. Each cup of coffee is 20 yuan.
The coffee shop’s name is Hinichijou. It fully opened on December 3, the International Day of Persons with Disabilities, and soon got popular. That’s not only because it’s so different, but also because it provides jobs for disabled people.
Wang Haiqing, one founder (创办者) of the shop, said most of the workers in Hinichijou are disabled people. The shop manager Chen Yingying has difficulty in hearing. She has won several prizes at coffee-making competitions. The person handing out coffee with a bear paw suffered facial burns (遭受面部烧伤). Both of them got training from Shanghai Disabled Persons’ Federation.
Why does the coffee shop place its workers behind a wall? Wang said it just wants to help them feel more comfortable at work.
The wait for a coffee may take up to an hour, but many people still go to the coffee shop. Li Mengqian went to the coffee shop after reading about it online. “I know it is difficult for disabled people to find a job. It is great to have such a shop,” she said. “We should show our love for them. As long as everyone gives a love, the world will become a beautiful home.”
Wang said he and the other founders plan to open more shops to help disabled people.
1. What’s wrong with Chen Yingying? (不超过5个单词)2. Why does Hinichijou let its workers work behind a wall? (不超过10个单词)
3. Why do people still go to the shop though they may have to wait for a coffee for an hour? (不超过10个单词)
Open an App, place your order, and wait for your food to be delivered (递送) to your home— this is how many people eat in China these days. According to the latest data (数据) from the China Internet Network Information Center, 421 million Chinese people use online food delivery services. That’s the same as half of the total number of Internet users in China.
Which group of people is ordering food online the most? Unsurprisingly, it’s mainly young people. A recent report that was jointly(联合) made by the China Hospitality Association(饭店协会) and Meituan, a food delivery service, showed that 86.3 percent of the service’s users are between 20 and 34 years old. These people, who more probably live in small families, are the main group driving the development of the food delivery industry.
Small families depend greatly on food delivery services. According to the National Bureau of Statistics (国家统计局), Chinese families have changed in size over the past ten years. In 2002, only 7.7 percent of families were single-person households. But this number increased to 15. 6 percent in 2017. The two-person families rose from 18.4 percent in 2002 to 27.2 percent in 2017. For small families, cooking takes more time and resources compared with bigger families, so ordering food online has become more popular.
The improvement of China’s food delivery services has also caused more people to order food online. According to Meituan’s report, the average(平均的) time it takes to make a food delivery reduced from 38 minutes in 2017 to 29 minutes in 2020. Many delivery companies are also offering more services, and delivering products such as fruit, vegetables, medicine and flowers. As its services continue to improve, it’s probably that the food delivery industry will keep growing.
1. Is it popular nowadays to order food online in China?2. People in which age group use food delivery services the most in China?
3. Why has the food delivery industry grown so quickly?
4. Do you think it’s good to eat food ordered online usually? Why or why not?
