The development of AI (人工智能) is a hot topic these days. AI makes it possible for machines to learn from experience and perform human-like tasks. But what is the future of AI? Will it be a good thing? Students are talking about it.
I think AI will be more useful in our future lives. It’s now used in many fields like phones and medicine. No one really knows what will happen if machines become smarter than humans. However, I’m sure AI will help us solve problems. Tina | I am worried that people will create something that can be better than themselves. In the near future, AI will develop at a high speed. Humans may be replaced because AI robots will do lots of human jobs. Bill |
I really think that AI will change the way we work, the way we live, and the way we think. Imagine if we could put a CPU (中央处理器) into our brains! Soon we’ll be able to improve our math and memory. How exciting! Mary | Think of what’s happening right now. Some robots are used to kill animals under human orders. So I think AI will be very dangerous for humans. We need to be careful about what we ask machines to do. John |
| A．AI will help us solve problems |
| B．AI will change the way we work |
| C．we need to be careful about AI |
| D．AI robots will do lots of human jobs |
| A．Mary. | B．Bill. |
| C．Tina. | D．John. |
| A．dangerous | B．useful |
| C．exciting | D．surprising |
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【推荐1】With the development of science, more and more people are confused whether it is good or not to make robots. Are robots going to take place of human beings?
Every coin has two sides. Robots can be good to our society and life. At the same time, they also have some bad effects on our daily life. In my opinion, the advantages of robots are more than the disadvantages.
First, robots make our life more convenient. We can do many things that we didn’t have the ability to do in the past by using robots. That makes our daily life more effective.
Second, robots can be used in industry. Factories can reduce the cost of production by using robots. Robots do not need to eat and they will not be ill. That’s very good for producing goods.
Third, robots can save more people when a disaster happens. Because they can’t feel pain and they can save more people without feeling tired.
In a word, the world is changing. We should also change our thought to accept robots to become part of our lives. That can make our lives more colorful.
1. In the writer’s opinion, how many advantages do robots have?| A．Two. | B．Three. | C．Four. |
| A．幸福的 | B．环保的 | C．方便的 |
| A．Yes, they can. | B．No, they can’t. | C．We don’t know. |
| A．The hard work of farmers. | B．The beautiful environment of the earth. | C．The development of science. |
| A．They have both advantages and disadvantages. |
| B．They only have disadvantages. |
| C．They only have advantages. |
【推荐2】There’s a new frontier in 3D printing that’s beginning to come into focus: food. Recent development has made possible machines that print, cook, and serve foods on a mass scale. And the industry isn’t stopping there.
Food production
With a 3D printer, a cook can print complicated chocolate sculptures and beautiful pieces for decoration on a wedding cake. Not everybody can do that -- it takes years of experience, but a printer makes it easy. A restaurant in Spain uses a Foodini to “re-create forms and pieces” of food that are “exactly the same,”, freeing cooks to complete other tasks. In another restaurant, all of the dishes and desserts it serves are 3D-printed, rather than farm to table.
Sustainability（可持续性）
The global population is expected to grow to 9.6 billion by 2050, and some analysts estimate that food production will need to be raised by 50 percent to maintain current levels. Sustainability is becoming a necessity. 3D food printing could probably contribute to the solution. Some experts believe printers could use hydro-colloids（水解胶体）from plentiful renewable like algae（藻类）and grass to replace the familiar ingredients. 3D printing can reduce fuel use and emissions. Grocery stores of the future might stock “food” that lasts years on end, freeing up shelf space and reducing transportation and storage requirements.
Nutrition
Future 3D food printers could make processed food healthier. Hod Lipson, a professor at Columbia University, said, “Food printing could allow consumers to print food with customized nutritional content, like vitamins. So instead of eating a piece of yesterday’s bread from the supermarket, you’d eat something baked just for you on demand.”
Challenges
Despite recent advancements in 3D food printing, the industry has many challenges to overcome. Currently, most ingredients must be changed to a paste before a printer can use them, and the printing process is quite time-consuming, because ingredients interact with each other in very complex ways. On top of that, most of the 3D food printers now are restricted to dry ingredients, because meat and milk products may easily go bad. Some experts are skeptical about 3D food printers, believing they are better suited for fast food restaurants than homes and high-end restaurants.
1. What benefit does 3D printing bring to food production?| A．It helps cooks to create new dishes. | B．It saves time and effort in cooking. |
| C．It improves the cooking conditions. | D．It contributes to restaurant decorations. |
| A．It solves food shortages easily. | B．It quickens the transportation of food. |
| C．It needs no space for the storage of food. | D．It uses renewable materials as sources of food. |
| A．is more available to consumers | B．can meet individual nutritional needs |
| C．is tastier than food in supermarkets | D．can keep all the nutrition in raw materials |
| A．The printing process is complicated. | B．3D food printers are too expensive. |
| C．Food materials have to be dry. | D．Some experts doubt 3D food printing. |
| A．3D Food Printing: Delicious New Technology | B．A New Way to Improve 3D Food Printing |
| C．The Challenges for 3D Food Production | D．3D Food Printing: From Farm to Table |
【推荐3】It’s really a good idea to visit some places of interest during the holiday. And the Great Wall of China, the longest human-made structure (建造物) in the world, is a must-see for many visitors. However, not everyone has the chance to see the Great Wall in person, especially during the outbreak of COVID-19. Don’t worry. Now you can visit it easily and conveniently (方便地) online.
Google Arts & Culture has made a new theme page. People are able to travel through the Great Wall on its website and app. Named “Walk the Great Wall of China”, it includes a 360-degree online tour of one of the best-preserved (保存最好的) parts, 370 pictures of the Great Wall and 35 stories about the structure.
It’s a chance for people to learn more about its rich history, like how and when the Great Wall was built. They will also be able to find stories that tell the secrets behind the Great Wall.
1. The Great Wall must be seen because ________.| A．it is the strongest wall in the world | B．it has the longest history in the world |
| C．it has the longest stone in the world | D．it is the longest human-made wall in the world |
| A．A 360-degree online tour. | B．5 videos of the Great Wall. |
| C．35 stories about the structure. | D．370 pictures of the Great Wall. |
| A．Ways to make the website. | B．Advice on visiting the Great Wall. |
| C．Rich history of the Great Wall. | D．Ideas about protecting the Great Wall. |
Antarctica (南极洲) is the coldest, driest and windiest place on our planet. What would it be like to live and work there? On Oct. 15th, 2019, 50 Chinese scientists set sail from Shenzhen, heading for Antarctica. This was our country's 36th Antarctic expedition. The ship, Xuelong 2, is the first icebreaker made in China. Xuelong 2 is one of the world's best research icebreakers.
It can sail to any place around the world in one trip without refueling (加燃料). It can work in temperatures as low as -30%℃. It is the first in the world to use two-way ice-breaking technology, which means that it can break the ice while moving forward or backward.
Because of Antarctica's special environment, scientists from around the world have been there to do studies for many years. The study of Antarctica's geology (地质) is also important. Rock in Antarctica can tell scientists what the weather was like a long time ago. And they can help scientists understand how the earth has changed over time. There are also many wild animals, such as penguins and seals. Scientists can learn how animals live in cold places by studying them.
As we all know, life in Antarctica is not easy－it's cold and sometimes dangerous. But scientists say it's still quite fun. For example, some scientists study how penguins walk, what they eat and why they move from one place to another. They are excited to see the cute animals playing around. They hope their studies can help protect them.
Xuelong 2 finished its tasks and returned to Shanghai on April 22, 2020.
1. How many Chinese scientists headed for Antarctica on Oct 15th, 2019?| A．Fifteen. | B．Nineteen. | C．Fifty. | D．Two hundred. |
| A．the first icebreaker made in the world | B．the first in the world to use two-way ice-breaking technology |
| C．one of the best research icebreakers in China | D．the second icebreaker made in China |
| A．how the weather has changed | B．the geology and wild animals |
| C．the original plants | D．how the rock disappeared |
| A．Not easy but still quite fun. | B．Dangerous and boring. |
| C．Hard and dangerous. | D．Safe but quite tiring. |
| A．In mid-March 2020. | B．In late March 2020. |
| C．In mid-April 2020. | D．In late April 2020. |
Some of the world’s most important scientists think the idea of people living on Mars will come true one day. Stephen Hawking believed humans must move into space to live. “Once we spread out into space and build independent colonies (殖民地), our future should be safe,” he said. Robert Zubrin, a rocket scientist, agrees and thinks sending people to Mars will allow us to learn a lot—for example, about the ability of humans to live in a very different environment.
★ Terraforming means changing the environment on a planet so that it is similar to Earth’s. One of the main goals of terraforming Mars is to warm it up because the average temperature there is about -60 °C. One idea for warming Mars is to build factories there that produce greenhouse gases. This could take many centuries. However, it should lead to rainfall and the growth of plants, resulting in more air that people can breathe.
Another big concern for scientists is whether humans can move to Mars and still stay healthy in mind and body. As a test, six people lived in a Mars-like environment in Hawaii for a year before “returning to Earth” recently. It was a 1, 200-square-foot room that was on the side of a volcano (火山) and used the sun for energy. Christiane Heinicke, one of the people who lived there, said that one of the biggest problems was feeling bored. Another important finding was that the people living together should all be able to get along and work together.
One particular organization based in Europe is planning to send the first humans to Mars before 2030. However, many experts think the project’s cost of $6 billion is too low for it to be successful. The American space agency NASA believes that sending people to Mars would cost about $100 billion, although this estimate (估价) is based on bringing them back to Earth, too. Anyway, it seems that humans living on Mars may well happen a lot sooner than most people believe.
1. Paragraph 1 mainly focuses on ________.| A．how we can move to another planet | B．why we work on moving to Mars |
| C．when we will move to Mars | D．where the Mars is |
| A．However, scientists need to terraform Mars for people to live. |
| B．And people are trying to send the people to Mars. |
| C．But scientists can’t do anything about this. |
| D．However, it is not easy to move to Mars. |
| A．the cost of moving to Mars | B．the energy on Mars |
| C．the physical quality of people | D．the food on Mars |
| A．humans | B．scientists | C．planets | D．cost |
| A．The temperature on Mars is 60 degrees above zero. |
| B．It is sure to send the first humans to Mars after 2030. |
| C．$6 billion is enough to send people to Mars. |
| D．Moving to Mars would be good for mankind. |
【推荐3】At Alexandria Country Day School in Virginia, a group of sixth-graders had a special project (项目). They used 3D printers to create(创造) mini 3D-printed model villages for people without places to live in. The students got the idea from a company (公司) called Icon. With 3D printers, Icon makes cheap homes for everyone. And building these homes just takes a few days.
Allison McDonald is the science teacher and the director (负责人) of the sixth-grade project. She said, “Through the project, the students not only learned about the high technology (技术) and teamwork, but they also learned to know the true needs of homeless people.” While creating their mini 3D buildings, the students studied how to better use the technology in everyday life. They said getting everything ready before printing was hard. Putting a lot of ideas into their neighborhood, they made houses, stores, and schools. Also, they made churches, health centers, theaters and even bus stops to make people get a sense of belonging (归属感).
Amber Fogarty is the director of Mobile Loaves & Fishes and gives homes for people in need for free. After learning about the students’ project, Amber said, “Both the project and the students are excellent! How can you use your brains and hearts to solve problems? I don’t know what the future will be like with 3D printing. But everything is possible. It is a journey of discovery.”
1. The students created the mini 3D-printed model villages for ________.| A．science teachers | B．schools in Virginia | C．people without homes | D．workers from Icon |
| A．the students can build the 3D-printed homes everywhere |
| B．the students learned to use 3D printers to help people |
| C．it’s easy for students to prepare for the 3D-printed homes |
| D．3D-homes are beautiful and good for the environment |
| A．the students can make cheap homes in a few days |
| B．the project teaches the students to look after themselves |
| C．the students got the idea from Mobile Loaves & Fishes |
| D．Amber Fogarty liked both the project and the students |
| A．A Special Project | B．High Technology |
| C．A Future Village | D．Homeless People |
【推荐1】Years ago, if a teenager had some problems in his life, he might write about them in his diary. Now a teenager might surf the Internet and write about his problems, in his blog. In some ways, a diary and a blog are almost the same. Then, what makes a blog different from a diary.
The biggest difference is that a blog is much more public (公开的) than a diary. Anyone can read what you write in your blog. If you are not satisfied (满意的) with a friend and write something bad about him in your diary, he will never know it. However, if you do this on the Internet, your friend may read your blog and get angry. So we have to be careful of what we write.
A blog has good points, of course. People choose to write in blogs, and they know their friend will read what they write.
If you feel sad one day and write in your diary, no one will know about it. If you write the same words in your blog, your friends may quickly write back to comfort (安慰) you and give you their help.
Blogs help people know what their friends are doing. Though it’s a good way to write blogs about everyday life, I still prefer (更喜欢) old diary.
1. Now when a teenager has some problems in his life, he might ________.| A．talk to his friends | B．keep them in his diary |
| C．write them in his blog | D．talk them with his parents |
| A．thinks a blog is more helpful than a diary | B．thinks a blog and a diary are the same |
| C．likes a diary better than a blog | D．likes writing blogs very much |
| A．The teenagers’ problems in their lives. | B．How to make friends by writing blogs. |
| C．The good points of writing blogs. | D．The differences between a diary and a blog. |
【推荐2】①The banana is a kind of fruit and famous for its good taste. Many people say the banana is their favourite fruit. There are many kinds of bananas in the world. Here’s more information about bananas.
②People from at least 107 countries grow bananas plants. The banana plant is very large. Some people often mistake the banana plants for trees. The banana plant can reach 5 meters in height. Leaves of banana plants are usually 2.5 meters long and 0.6 meters wide.
③The banana fruit grows in rows called hands. There can be as many as twenty bananas to a hand and as many as twenty tiers (层) in a bunch (串). A bunch usually weighs between 30 and 50 kilograms. A single banana weighs about 125 grams.
④People usually peel banana skins before eating. Most common color of the banana skin is yellow, but certain kinds of bananas have green, red, brown or purple skins.
⑤A number of people love to eat bananas because they are healthy and delicious. As we know, a banana has 75% of water. Except for water, a banana also has some vitamins (维生素), sugar and so on. Every year, people eat about 10,000 million bananas. People in Uganda eat most bananas. They consume (消费) about 226 kg of bananas per person every year.
根据语篇内容，选择最佳选项。1. What is the usual length (长度) of the leaves of banana plants?
| A．5 meters. | B．2.5 meters. | C．0.6 meters. |
| A．The banana plant is a kind of tree. |
| B．Banana s are widely planted in many countries. |
| C．A bunch of bananas usually weighs 125 grams. |
| A．掰断 | B．切碎 | C．剥掉 |
A． | B． | C． |
| A．Facts about bananas | B．Ways to grow bananas | C．Good taste of bananas |
If you go to Australia, you can see koalas everywhere. They’re a kind of cute animals only to be found in Australia. They are a symbol of Australia. And some of them are sent（被送） to other countries like America, China, France as gifts. But people keep them all in zoos in these countries. You can see them in the wild only in Australia. They have no natural enemies（天敌）. The koala’s favorite food is only the leaves of the eucalyptus tree（桉树）.
Victoria State is in the southeast of Australia. In Victoria, the koalas are becoming more and more in these years. This is a problem because the koalas nearly eat all the leaves of eucalyptus trees and then they will have nothing to eat.
Last year, people moved 500 koalas to other forests, and now they want to keep the number of koalas down. However, it will be some years before the leaves of eucalyptus trees grow back again.
1. Some koalas are sent to other countries ________.| A．to have natural enemies | B．as gifts |
| C．as specials | D．to eat trees |
| A．In Australia. | B．In America. |
| C．In China. | D．In France. |
| A．Koalas like all kinds of trees. |
| B．Victoria State has no places for koalas to live. |
| C．People in Victoria like to keep koalas as pets. |
| D．In Victoria, koalas nearly eat all the leaves of eucalyptus trees. |
| A．People built more zoos for them to live in. |
| B．People moved some of them to other forests. |
| C．People planted more eucalyptus trees for them to eat. |
| D．People killed some of them to keep the number of them down. |
