①Every now and then you may see news of satellites sent into space. On Feb 21, for example, US company Space X took 46 satellites into orbit. On Feb 27, China sent 22 satellites into space. Why do we need so many satellites? What do they do out there?
②At present, there are more than 3,000 satellites moving around the Earth, according to Germany. Satellites are very helpful to humans. They do all kinds of work, from transmitting (传送) TV signals to giving you directions on the road to helping scientists do research.
③For example, the 22 satellites China just sent up are part of the Beidou Navigation Satellite System. Shared bikes that use BeiDou chips can be easier to find. Drones (无人机) can also use BeiDou to fly.
④Before satellites, TV signals didn’t go very far. Mountains or tall buildings would stop them. Phone calls to faraway places were also a problem. With satellites, TV signals and phone calls can be sent directly to a satellite and back down to different places on Earth.
⑤Satellites can also provide information about clouds, oceans, land and ice. They help scientists predict changes in weather. By monitoring (监测) wildfires and volcanoes, satellites help people deal with natural disasters. Farmers can use satellite pictures to decide the best time to water their fields.
⑥Some satellites fly near other planets. They may look for water on Mars or take close-up pictures of Saturn’s rings (土星环). In 2020, Bilibili sent a satellite into space. Its job is to look at other planets and share the pictures and videos with Bilibili’s users.
1. What’s the structure of this passage?| A．①②—③④⑤-⑥ | B．①—②③—④⑤⑥ | C．①—②—③④⑤⑥ |
| A．China has 22 satellites in space altogether. |
| B．Humans have sent many satellites into space. |
| C．There is a serious competition between China and the US. |
| A．Shared bikes last longer. | B．Locate items more accurately. | C．Drones fly farther. |
a. TV signals didn’t go very far before satellites.
b. Satellites are very helpful to humans.
c. Satellites help scientists predict changes in weather.
d. Some satellites fly near other planets.
| A．One. | B．Two. | C．Four. |
| A．What can the satellites do for humans? |
| B．What are advantages and disadvantages of satellites? |
| C．Why countries are competing to send satellites into space? |
相似题推荐
【推荐1】The weather of Antarctica(南极洲)is cold, cloudy with heavy snow. Most parts of it are covered with ice sea for 10 months. Though it is dry and seldom rains, scientists in Antarctica have gotten their first crop of vegetables that they grew without earth. As one part of a plan, it will help astronauts to study fresh food about other planets.If the plan is successful, people will have some space to plant vegetables and fruit.
Researchers at Germany's Neumayer Station III say they have planted 3.6 kilograms (about 8pounds) of salad green vegetables, including 18 cucumbers and 70 carrots in a high technology greenhouse(温室)，while the temperatures outside dropped below -200C. In this way, they can eat fresh vegetables in time.
The German Aerospace(航天航空) Center DLR, Daniel Dchubert, which was the leader of the plan, said on Thursday,“Scientists hope to get 4 to 5 kilograms of fruit and vegetables a week in May.Maybe the plan can turn into reality."
While NASA has successful grown green plants on the International Space Station, DLR's Daniel Dchubert says the Antarctic plan decides to produce a wider range of vegetables, such as tomatoes, onions and so on. People might grow them on the Mars or the Moon one day.
We know people depend on agriculture since the beginning of human history.
Without agriculture,people can't live for many years. At the same time, the development of agriculture needed some conditions,including environment, temperature, weather and so on. The technology develops quickly. People will plant the vegetables on the Mars sooner or later.
1. What's the weather like in Antarctica according the passage?| A．Sunny and cold. | B．Cool and snowy. | C．Dry and rainy. | D．Seriously bad. |
| A．Antarctic plan will produce more kinds of vegetables |
| B．more vegetables might be grown on the Sun or the Moon |
| C．Antarctic plan may be useless to other planets, like the Mars |
| D．Green plants will be grown on the International Space Station |
| A．3.6 kilograms is 9 pounds. | B．No people are living in Antarctica. |
| C．People will plant vegetables on the Mars. | D．Scientists in Antarctica can't grow vegetables. |
| A．航天. | B．工业. | C．农业 | D．服务业. |
| A．Green vegetables in Antarctica. | B．Special weather in Antarctica. |
| C．A great plan about vegetables. | D．Planting green vegetables. |
The water on Earth has been moving all the time for billions of years. It travels from ocean to air to land and back to the ocean. This continuous movement is called the water cycle, and it is the reason that earth has the same amount of water today as it did back in the days of the dinosaurs. The water cycle provides people, animals, and plants with life-giving water. Each stage of the water cycle is equally important. Here are some of the stages.
Evaporation is the stage of the water cycle when water moves into the air. Water in oceans, seas, lakes, rivers, and streams is in liquid form. The sun’s radiation heats the water and causes it to change into vapor. It rises into the atmosphere. Areas that receive more heat from the sun experience more evaporation.
Condensation is the stage of the water cycle that follows evaporation. In this stage, vapor changes back into liquid while it is still in the air. Vapor in the atmosphere moves to different regions of Earth. When vapor moves to cooler regions, it also cools. Cooling causes vapor to change back into liquid. It turns into many tiny water droplets. The water droplets collect, making them visible in the air. Clouds and fog are collections of water droplets that result from condensation. The water droplets can remain in the air as long as they are light enough for air currents to carry them.
Precipitation occurs after condensation. This is the stage of the water cycle when water travels back to Earth’s surface. Water droplets in the atmosphere collect in clouds and become heavy. They become so heavy that air currents can no longer carry them. The droplets fall to Earth’s surface as rain. If the air is cold, the water droplets may be snowflakes, hail, or sleet. Some of the precipitation soaks into the ground. And some of it goes directly back into the same oceans, seas, lakes, rivers, and streams from which it had evaporated.
Although the water cycle has kept water usable for billions of years, the fresh water that we depend on is limited. It is necessary that we think about...
1. How many stages of the water cycle are mentioned in this passage?| A．One. | B．Two. | C．Three. | D．Four. |
| A．Both stages contain rain and clouds. |
| B．In both stages water changes the form. |
| C．They are more important than precipitation. |
| D．In both stages, the ocean plays an important role. |
| A．Condensation follows the precipitation stage. |
| B．Vapor changes into liquid in the stage evaporation. |
| C．It is the precipitation stage when it snows in cold winter. |
| D．Clouds are made up of water droplets and are very heavy. |
| A．Places to find water resources. | B．Ways to protect water resources. |
| C．Reasons to learn the water cycle. | D．Methods to study the water cycle. |
All soil needs food. If we do not give it any, the plants will be weak. Farmers found that animals’ waste is the best food for the soil, but chemical fertilizers(化肥) are also very useful. The same crop（庄稼）should not be grown in the same place every year; it ’s better to have a different crop. A change of crop and the use of a good fertilizer will keep the land good.
1. Which of the following is true ?
| A．All our food comes from the soil. | B．Most of our food comes from the soil. |
| C．None of our food comes from the soil. | D．All our food comes from animals. |
| A．Chemical fertilizers. | B．Plants and grass. | C．Animals’ waste. | D．Different crops. |
| A．Because we can keep the soil rich this way. | B．Because we don’t have enough land. |
| C．Because we want to have a different food. | D．Because we do this as a habit. |
| A．Soil and Waste | B．Plants and Animals | C．Food and Waste | D．Soil and Food |
【推荐1】Facial-recognition cameras are everywhere — even in your smartphone. Many people use this technology to unlock (解锁) their phones, open doors or make quick payments. But there is a problem: Someone wears masks. What a headache!
Scientists are trying to solve this problem. For example, Engineering and Technology (E&T) magazine reports that Hanwang, a tech company in Beijing, has made a new system. It can recognize (辨认) 95% of people when they wear masks.
What’s the secret? It’s all about your eyes. Marios Savvides from Carnegie Mellon University studies facial-recognition. As we get older, he says, our faces change shape. But the area around our eyes doesn’t. It stays the same — even if we put on weight. As long as there are enough data from the area of our eyes, the cameras can recognize us.
Tech5 is another facial-recognition company. The Swiss company’s products scan (扫描) the shape of your face. They also scan your iris (虹膜), which is the colored part of your eyes. Tech5 hopes to ignore (忽略) all of the face below the nose.
This kind of software is more important than just unlocking your phone. “It can discover criminals (罪犯), even when they wear masks.” said Huang Lei from Hanwang. Hanwang’s technology is used by Chinese police in places like subway stations and airports. Similar technology is used by the United States Air Force.
Huang pointed out one big weakness: It fails when people wear both a mask and sunglasses. “In this situation, all of the key facial information is lost.” Lei said to E&T.
根据材料内容选择最佳答案。
1. At present, what can facial-recognition technology be used for?
| A．Taking photos. | B．Shutting doors. | C．Paying for things. | D．Locking smartphones. |
| A．It doesn’t work when people wear masks. |
| B．It causes trouble to people’s faces. |
| C．It brings people headaches all the time. |
| D．It gives personal information to the bad. |
| A．Because eyes never get old. |
| B．Because eyes have bright colors. |
| C．Because the area around our eyes doesn’t change. |
| D．Because eyes can store the people’s key information. |
A． | B． |
C． | D． |
| A．It is all about eyes | B．It is a safe way |
| C．Facial information is important | D．Facial-recognition is a risk. |
【推荐2】Building an app is a big project. If you want to build the next great smart phone app. You need a plan. First, think what kind of app that you want to build. Will your app be a game? Will it be for business? Then make a schedule for building the app. You need plenty of time for research before you are ready to build.
Now you are ready to make the app. Building an app is like a puzzle with many different parts. You can build it yourself or find a company to help you. There are many videos and websites that can teach you to build one. Some websites provide “building blocks（应用组件）” for app developers.
As you build, you pick blocks from the website and put them in your app. After you build your app, you need to check it carefully. Look for bugs. Most apps have several problems to fix. Show your app to people. Ask their opinions. Make sure everything works before letting people download it. There are so many tools that can help you build apps. Having the right tools will make the work easier. Now almost everyone can make a new app.
1. In the article, what do you need to do before building an app?| A．Find a company to help us |
| B．Ask other people for advice |
| C．Search information from the videos or on the Internet |
| D．Make a plan about what kind of app you want to build |
| A．ideas | B．problems | C．insects | D．plans |
| A．Business News | B．Travelling | C．Technology Today | D．Modern Fashion |
【推荐3】Every human being, no matter what he is doing, gives off body heat. The usual problem is how to get rid of it. But the designers of the University of Pittsburgh set themselves the opposite problem — how to collect body heat, and the heat given off by electrical equipment such as electric lights and refrigerators as well. The system works so well that no fuel (燃料) is needed to make the university’s six buildings warm and comfortable.
Some parts of most modern buildings, theatres and office as well as classrooms — are heated by people and lights far more than necessary, and sometimes they must be air-conditioned (用空调的) even in winter. The skill of saving heat and sharing it out again in a different way is called “heat recovery”. Few modern buildings recover heat, but the university’s system is the first to recover heat from some buildings and reuse it in others.
Along the way, Pittsburgh University has learned a great deal about some of its heat producer. The harder a student studies, the more heat his body gives off. Boy students send out more heat than girl students. And the larger a student is, the more heat he produced. It sounds rather reasonable to draw the following conclusion (总结) that the hottest hope for the Pittsburgh University would be a hardworking, overweight boy student who is very clever in the university.
1. According to paragraph 1, the Pittsburgh University collect heat given off by ________ to make the university’s six buildings warm and comfortable.| A．human bodies | B．human bodies and electrical equipment |
| C．human bodies and fuel | D．human bodies, electrical equipment and fuel |
| A．find out the source of heat | B．produce a social form of air conditioning |
| C．provide heat for the hot water system | D．collect and reuse heat |
| A．A fat boy students who is clever and studies hard. |
| B．A thin girl student who is not clever and does not study hard. |
| C．A thin boy student who is clever and studies hard. |
| D．A fat girl student who is both clever and hardworking. |
| A．the person who produces the most heat |
| B．the person who suffers most from heat |
| C．the person who takes in the most heat |
| D．the person who wants the most heat |
| A．Modern Building’s Heat System |
| B．A New Heat Recovery System in the Pittsburgh University |
| C．Recovery of Boy’s Heat in the Pittsburgh University |
| D．The Best Way to Save Fuel or Electricity |
【推荐1】As a child, what did you want to be when you grow up? If you were like most children, you probably let your imagination run wild. Maybe you dreamed of flying into space or being a famous cook. Then perhaps over the years, your dreams became more realistic. Or you might have given up some.
It’s important to have dreams because dreams can give us energy to succeed in life. Dreams inspire us. They might take a few years or they might take a lifetime to achieve. The important thing is that you’re always working for your dream. And the best way to do that is by setting goals.
What is the difference between a dream and a goal? It’s been said that dreams are the final destination; goals are the stops along the way. Your dreams mean what you want, but goals tell how you will get there. That makes goal setting a necessary step in reaching your dreams.
If you’ve been dreaming about doing something for years, start today. Write down your dream and set your goals. Then you’ll be on your way to make your dreams come true.
1. The underlined word “inspire” means “________” in Chinese.| A．激励 | B．帮助 | C．催促 | D．阻碍 |
| A．Finding the meaning of dream. | B．Taking a lifetime to work. |
| C．Setting goals. | D．Finding the differences between a dream and a goal. |
| A．Writing down your dream will help you to achieve your dream. |
| B．You can achieve your goals by dreaming. |
| C．Dreams give us energy to be successful in our life. |
| D．Goals can tell you how you get you want. |
【推荐2】The 2022 Winter Olympic Games were held in Beijing on February 4. The venues (场馆) for the Winter Games in 2022 have been divided into three areas: Beijing, Yanqing and ZhangJiakou. Let’s take a look at some competition stadium(体育场).
It is also known as “the Bird’s Nest”. This stadium hosted the Opening and Closing Ceremonies of the Beijing 2008 Olympics. And the Bird’s Nest was also the place of the Opening and Closing Ceremonies of the Winter Olympic Games.
For the winter Olympics, the Water Cube (立方体) was changed into “the Ice Cube” for the curling (冰壶) competition. Following the 2022 Games, the stadium continues to be used for both winter and summer sports, changing between the two, depending on the season.
Wukesong Sports Center is very large. It can hold 18, 000 people. It served as the main indoor stadium for ice hockey (冰球) at the 2022 Winter Games together with the National Indoor Stadium. It is the only-newly built ice competition place in Beijing. The 3,360 pieces of glass create 22 nice ribbons (丝带, 细带) , like a speed skating trail (速滑跑道) across the ice. It has a crystal (水晶般的) beautiful nickname-“Ice Ribbon”.
Judge the following sentences true (T) or false (F) according to the passage.
1. The venues for the Winter Games in 2022 have been divided into four areas.
2. The National Stadium hosted the Opening and Closing Ceremonies of the Winter Olympic Games!
3. The Ice Cube can be also used for swimming competitions in summer.
4. You saw Ice hockey in Wukesong Sports Center.
5. The National Speed Skating Trail has a crystal beautiful nickname the Ice Cube. It is newly-built.
Today you come here, you are sure to be attracted by its beauty. Hangzhou is famous for West Lake which is a famous fresh water lake, It lies in central Hangzhou, in Zhejiang Province of eastern China.
Traditionally, there are ten best-known spots on the West Lake. They are called Ten Scenes of West Lake by Qianlong Emperor. The West Lake is divided by three causeways called Su Di, Bai Di, and Yanggong Di. First I want to tell you the history of Bai Di.
In the middle of the Tang Dynasty, Zhen yuan era（785-804）, poet Bai Juyi came to Hangzhou as a governor（官员，总督）. He realized that the farmland nearby depended on the water of West Lake, but the old dyke（堤防）had collapsed（倒塌）, the water of West Lake had dried out, and the local farmers suffered drought. He ordered the construction（修建）of a causeway of a stronger and taller dyke to solve the drought problem. The lives of local people improved over the following years. Then Bai Juyi had more free time to enjoy the beauty of West Lake. He visited West Lake almost every day. This causeway was later named after Bai Di in Bai Juyi's honor.
Next is Su Di. Spring Dawn on the Su Causeway is considered as the first of ten scenes. It was built by Su Dongpo, the great poet, during the Noah Song Dynasty. It is very beautiful in spring.
1. West Lake lies .
| A．in central Hangzhou | B．in eastern Hangzhou |
| C．in northern Hangzhou | D．in western Hangzhou |
| A．two | B．three | C．five | D．ten |
| A．first | B．second | C．third | D．fourth |
| A．students | B．teachers | C．singers | D．tourists |
【推荐1】Stephen Hawking, one of the world’s most famous scientists, once said, “Once we step into space, our future should be safe,” Do you agree with him?
Today, many countries such as the United States, Russia, China, are building space stations and sending astronauts there. These stations will prepare humans to visit and later live on Mars （火星）or other earth—like planets.
Robert Zubrin, a rocket scientist, thinks it is a right thing for the countries to do so. Humans should move to other planets and build new homes there. He wants to start with Mars. Why? He thinks sending people to Mars will help us to learn a lot of things—for example, the ability（能力）of humans to live in a very different environment. In the end, we could work and live on other planets. Besides, any improvement we make in science, technology（科技）, medicine and health will do good to people here on Earth.
Elon Musk, the founder and CEO of Space X, a company（公司）that builds rockets, also believes we should send humans to Mars. He doesn’t want to send just “one little mission（使命）,” though. His long—term plan is to put one million people there if some bad things happen to us here on Earth.
Not everyone thinks sending humans into space is a smart idea. Many people say it’s too expensive. Also, most space trips are not short. A one-way trip to Mars, for example, would take at least six months. People who have such a long way to travel could face many health problems. What’ more, these first people would find life terribly difficult in space. On the moon’s surface（表面）, for example, the sun’s rays（光线）are very dangerous. People would have to stay indoors most of the time.
Although there will be lots of difficulties, sending people into space seems certain. As the saying goes, “My conquest（征途）is the sea of stars.” In the future, we might see cities or even new human cultures on other planets.
1. Both Robert Zubrin and Elon Musk probably agree that ________.| A．it’s impossible to send humans into space |
| B．people should live on the moon in the future |
| C．it’s not a good idea to live on the earth |
| D．it’s necessary to send humans to other planets like Mars |
| A．Stephen Hawking is one of the world’s most famous scientists |
| B．humans will be dangerous if they stay outdoers in space |
| C．there are a few reasons not to send humans into space |
| D．there are some reasons to travel to Mars |
A． | B． | C． | D． |
| A．Travelling in space is fun and meaningful |
| B．In Paragraph 1, the word “our” means humans’. |
| C．To prepare humans to live on the moon a lot of countries are planning to build space stations. |
| D．Not everyone agrees that humans should move to other planets because humans know nothing about space. |
【推荐2】On 2nd April, we said goodbye to Tiangong I, China’s first space lab. According to the China Maned Space Agency (中国载人航天局), Tiangong I re-entered the earth’s atmosphere (大气层) and some of its debris (碎片) fell into the South Pacific Ocean.
There are many spacecraft that are still in orbit (轨道) above the earth. After finishing their trips, they will all re-enter the earth’s atmosphere like Tiangong I.
There are two types of re-entries: controlled re-entry and uncontrolled re-entry.
Some satellites and manned spacecraft come back to the earth in a controlled re-entry. Experts calculate (计算) the path of the falling spacecraft and its speed. They can guide the spacecraft to fall in a chosen area. Some spacecraft may have problems while in space after a certain amount of time. These spacecraft come back in an uncontrolled re-entry. It is hard to tell when and where these spacecraft will fall until the last few hours. The US space station Skylab came back partially uncontrolled in 1979. Parts of the station fell in western Australia, but no one was hurt.
During re-entry, most of the spacecraft will burn up while passing through the earth’s atmosphere. Only a small amount of the debris will reach the ground. The debris typically ends up falling into the ocean, China Daily reported.
1. The debris from Tiangong I ________.| A．fell in the central part of the US |
| B．fell in western Australia |
| C．fell into the South Pacific Ocean |
| D．fell into the North Pacific Ocean |
| A．re-enter the earth’s atmosphere |
| B．speed up and fly back to the earth |
| C．enter another orbit and stay in space |
| D．burn up and disappear |
| A．one | B．two | C．three | D．four |
| A．Some people were hurt by its debris. |
| B．It came back in a controlled re-entry. |
| C．It was directed to fall into the ocean. |
| D．Parts of it fell in western Australia. |
| A．a movie review | B．a story book |
| C．a government report | D．a science magazine |
At 00: 23 on Oct 16, 2021, the Shenzhou XIII spacecraft rose into the sky from the Jiuquan Satellite Launch Center in Gansu. Three Chinese astronauts- Zhai Zhigang, Wang Yaping and Ye Guangfu—set off for the Tiangong space station.
The spacecraft successfully docked (对接) with the space station coremodule Tianhe. The Chinese astronauts will stay in space for six months, carrying out the longest-ever space mission (使命).
Shenzh ou XIII is the fourth spacecraft to visit the Tiangong station and the second manned ship to transport astronauts to the orbiting outpost (轨道位置). Before it, Shenzhou XII manned spacecraft was launched on June 17, carrying three astronauts — Nie Haisheng, Liu Boming and Tang Hongbo. They stayed in the space station for three months and returned to Earth on Sept 17.
The Shenzhou XIII astronauts have a wide range of assignments, such as doing medical experiments, setting up robotic (机械的) arms and checking the devices(设备) inside the station. They have performed two space walks to work outside the station – one was on Nov 7, with Wang becoming China's first female spacewalker, while the other was on Dec. 26.
The mission is a valuable opportunity because it allows the astronauts to carry out in-orbit experiments that take a lot of time and manual work.
The Shenzhou XIII mission has fueled (点燃) teenagers’ passion for space exploration as well. On Dec9, the astronauts gave a science lecture to millions of students on Earth. They showed the kids their space life and did some fun science experiments. For example, Wang made a water ball to show that water in space is different from that on Earth. It will not flow downward if you try to pour it into a cup.
Denis Simon, the director of the Center for Innovation Policy at Duke University in the US, told Xinhua that China’s success in space continues to be impressive. “China is now well on its way to being a leader in space exploration,”he said.
1. What do we know about the mission of Shenzhou XIII?| A．It has the most astronauts ever sent into space. |
| B．It is the longest-ever space mission by Chinese astronauts. |
| C．It is the first mission to send astronauts to an orbiting outpost. |
| D．The spacecraft the first one to visit the Tiangong space station. |
| A．The tasks for Shenzhou XIII astronauts. |
| B．The men who are spacewalkers. |
| C．Devices astronauts used to finish their tasks. |
| D．Time when the space walks were performed. |
| A．There will be more success in space exploration around the world. |
| B．Cooperation between China and the US is going well. |
| C．China has done a great job in space exploration. |
| D．China has followed the laws of space exploration. |
