Every now and then, you may hear news of satellites (卫星) sent into space. On Feb 21, for example, US company SpaceX took 46 satellites into orbit (轨道). On Feb 27, China sent 22 satellites into orbit. Why do we need satellites?
There are more than 3, 000 active satellites moving around the earth, according to a Germany company. Satellites have all kinds of roles, such as sending TV signals (信号), showing you the way on the road, helping scientists with their studies, etc.
For example, the 22 satellites China just sent up are part of the BeiDou Navigation Satellite System (北斗卫星导航系统). Shared bikes that use BeiDou chips (芯片) can provide more correct places, making them easier to find. Drones (无人机) can also use BeiDou while flying.
Before satellites, TV signals don’t reach very far. Mountains or tall buildings would block the signals. 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 the earth. SpaceX is trying to go further. It plans to use satellites to provide people with Internet all over the world.
Satellites can also provide information about clouds, oceans, land and ice. They help scientists know changes in weather. By watching wildfires and volcanoes (火山), satellites can help to deal with natural disasters (灾害). Farmers can use satellites pictures to decide the best time to water their plants.
1. What can we know from the second paragraph?A.People live better with the help of satellites. |
B.With satellites, people will not be lost on the road any more. |
C.Over 3000 Chinese satellites move around the earth day and night. |
D.China has sent more satellites into orbit than the USA in February. |
A.make signals clearer | B.make signals weaker |
C.make signals stronger | D.make signals brighter |
A.Satellites do great help to farmers. | B.Satellites send phone calls back to the earth. |
C.Satellites provide information about the weather. | D.Satellites offer to help people travel all over the world. |
A.More and better satellites | B.Useful satellites in space |
C.The development of satellites | D.BeiDou Navigation Satellite |
相似题推荐
【推荐1】In Germany, if children want to ride bikes by themselves on the road, they have to pass a test. The test is quite like our driving test.
First, the students have 30 classes about how to ride bikes safely on the road. Each student has a book. The book tells them how to keep safe on the road, how to keep others safe and what to do if they get hurt.
After the classes, the students will have two written tests. Then they will do some riding practice at school. Some policemen will come to give them some help.
At last, the students will have a test on the road. If they can pass the test, they can get a bike license. Then they can ride on the road.
We all know German people are very careful. We can see this from their riding test for the students. The students learn useful riding skills, and at the same time they learn the spirit (精神) of the country.
1. In Germany, children must________ before they can ride bikes on the road.A.get a bike license | B.finish middle school |
C.get a driving license | D.reach the age of 16 |
①Have classes about riding bikes. ②Have a test on the road.
③ Have two written tests. ④Do some riding practice at school.
A.④③①② | B.①④②③ | C.①③④② | D.①③②④ |
A.German people are not careful on the road. |
B.Policemen will help the students have a test on the road. |
C.Students will get useful riding skills after the test. |
D.Students have to read 30 books for the test. |
A.品牌 | B.执照 | C.车程 | D.车牌 |
【推荐2】Many people don’t think that the number 13 is a lucky number. Many hotels do not have a 13th floor. The floors go from 12 to 14, and there is no number 13. Some people will never sit at a table with 12 other people. They will tell someone to go or ask another person to sit with them.
No one really knows why people do not like the number 13. Perhaps one reason is that when people began to count, they used ten fingers and two hands. This made 12. They could not count more.
Some Christians (基督徒) say that 13 is not lucky because there were 13 people at a meal the day before Jesus (耶稣) was killed (被杀). In a story about the old Greek (希腊的) gods, 12 gods were asked to a meal but one more came. This made 13. It is why the god Balder, who was at the meal, was killed.
1. There is often no floor number 13 in ________.A.restaurants | B.countries | C.hotels | D.Greece |
A.fingers | B.hotels | C.tables | D.gods |
A.all of them will leave | B.they will wait for two other people to come |
C.they will never come for dinner together | D.they will ask one of them to leave |
A.Jesus | B.the number 13 | C.Balder | D.hotels |
【推荐3】When you build a house, you use a blueprint. What’s a blueprint? In general, a blueprint is a drawing that shows how to put a house together with many different parts. DNA is the blueprint of life.
But building a living thing is far more complex than building a house. It takes millions of years for nature to change the DNA in living things to make them fit the world they live in.
How tall are you? What color are your eyes? What size are your feet? All these things are strongly influenced by your DNA before you are born!
DNA is fantastic!
Scientists found DNA looks like two S-shaped lines linked together.
Except for some twins, every living thing has its own special DNA.
Some health problems can be caused by problems in your DNA. Scientists can look for these problems and, sometimes, help you before you become sick. In the future, scientists might be able to change your DNA.
There are copies of your DNA in every part of your body. For example, your finger has the same DNA as your hair.
You have your own special DNA, but it repeats patterns from your parents’ DNA. From your DNA, scientists can identify not only you, but also people who are related to you. Your parents and grandparents are related to you, and you have their DNA. When you have a granddaughter, she will have your DNA.
Your DNA has billions of instructions that explain why you are the way you are. It’s one of the most amazing things on the earth!
1. What is the shape of DNA?A.![]() | B.![]() |
C.![]() | D.![]() |
a. shoe styles b. eye color c. height d. your home e. foot size f. health problems
A.a, b c, f | B.b, c, d, e | C.c, d, e, f | D.b, c, e, f |
A.创造 | B.设计 | C.识别 | D.记忆 |
A.living things’ DNA can’t be changed. |
B.Twins can have the same DNA. |
C.Your DNA is similar to your families’. |
D.Your DNA can tell others why you are the way you are. |
A.Introducing Blueprint |
B.How to Build a Living Thing |
C.DNA and Health Problems |
D.Amazing DNA |
Enjoy creative inventions Every November, Time magazine picks out “The 25 Best Inventions” of the year. These are the things that have made our lives different. TEENS has chosen three of the most interesting ones on the list. If you want to know more, please click Here. | |
![]() Ember Mug | It’s hard to always keep coffee at the right temperature, especially in winter. It’s too hat to drink at first, but before we know it, it gets too cold and loses all its taste. According to Time, the perfect level of warmth for a cup of coffee only lasts for 37 seconds, which makes the Ember Mug a great invention. It keeps your coffee or tea at a certain temperature, anywhere between 48℃ and 62℃, once you set it through a smartphone app. |
![]() Tasty One Top | TV cooking shows make it look so easy, but it’s almost impossible to get the recipes to look the same as how the professionals make them. However, the Tasty One Top DIY cooking helps. Developed by Buzzfeed, the cooker can be connected to a smartphone app, which has more than 1,700 recipes and videos. You choose a recipe and the app will let the cooker know what to do. For example, it’ll tell you when to turn your steak or when to add certain ingredients. |
![]() Jibo | Smart speakers from companies like Amazon and Xiaomi have added a lot of fun to our lives. Though they’re still faceless speakers. However, Jibo, developed by MIT professor Cynthia Breazeal, has brought smart technology to life. Said to be “the world’s first social robot for the home”, Jibo looks like a cartoon character, a round head and a voice that sounds like a 10-year-old boy. Inside its “head”, there are different sensors and cameras, which allow it to recognize (辨认) faces and speech. Jibo will move to face you whenever you talk to it. It can also set alarms, remind you of important things, tell you the weather and read news or messages from your friends and family. |
根据材料内容选择最佳答案。
1. Who chose the three of the most interesting inventions on the list?
A.Time magazine | B.TEENS | C.Buzzfeed | D.Cynthina Breazeal |
A.It can help make coffee or tea. | B.It’s used for drinking coffee or tea. |
C.It keeps coffee or tea at a certain temperature. | D.It keeps coffee or tea fresh. |
A.Because TV cooking shows make cooking so easy. |
B.Because after connecting to a smartphone app, it knows what to do itself. |
C.Because it’s very cheap and helpful. |
D.Because it can make more delicious food. |
A.Help do some housework. | B.Move to face people when people talk. |
C.Set alarms and remind things. | D.Tell the weather and read news or messages. |
A.A textbook. | B.A website. | C.A cooking magazine. | D.A guidebook. |
What is a robot?Basically(基本地),it is a machine which is designed to do the work of a human being. It is usually controlled by a computer. Once it has been given a set of things to do,it will do the job on its own.
Nowadays,Britain has 120 robots at work in industry. This compares(相比) badly with other industrial countries. In Japan,there are 4,000 robots in use. In the USA there are 2,000 and in Germany there are 500. According to the report,the government must help people understand how robot technology can be used. Also,people must be educated to know how important this new technology is. The designing of new robots will be very important in the future. The report says that special robot centres should be set up where people who design robots and people who will use them work together. The assembly(装配) work of the future will be complex(复杂的). So firms(企业) must develop robots to do it.
1. The report was written by scientists.
A.English | B.American | C.German | D.Japanese |
A.design | B.Computer | C.machine | D.man |
A.Britain | B.the USA | C.Japan | D.Germany |
A.Computers |
B.Robots |
C.people who design |
D.people who understand how to use robots |
A.The Development of Robots |
B.The Use of Robots |
C.The Robots in the Future |
D.Robot Industry |
【推荐3】Scientists will put some robot fish into the sea near Spain(西班牙)this year. These robot fish will help people find out the pollution in the water. If the robot fish are able to finish their work successfully, the team of scientists hope the fish will be used in rivers, lakes and seas around the world.
The robot fish are about 1.5 meters long. There is a detector in their bodies. It can find the pollution in the water, and then the robot fish will eat part of it.
They can “swim” for eight hours in the sea freely and send back information to people on the beach. After their energy(能量) runs down, they will go back to the beach by themselves.
There are five robot fish altogether(总共). Each costs about 29, 000 dollars. They are part of a threeyear project between engineering company BMT Group and Essex University in southeastern England.
1. The underlined word “detector” in the passage means “________” in Chinese.A.扬声器 | B.探测器 | C.显微镜 |
A.begin to work next year | B.work in the sea near England | C.find out the pollution in the water |
A.They will eat part of it. | B.They will stop working. | C.They will tell people where it is. |
A.14,500 | B.29,000 | C.145,000 |
A.The robot fish look like sharks. |
B.People have to help the robot fish go back to the beach. |
C.The robot fish can go back to the beach by themselves. |
![](https://img.xkw.com/dksih/QBM/2021/9/13/2807417062785024/2808675557335040/STEM/b3ce898a2465456a82a6fd234334e233.png?resizew=173)
Have you ever talked to your favorite toy? It must be cool if it can talk to you. Here is the good news. Kirobo Mini can do that.
Kirobo Mini is a new small Japanese robot, about 10 centimeters long. Its job is to keep people company. The robot is very small and can sit in the palm of your hand. It can tell different voices, move its upper body, answer questions and tell jokes. Its name comes from the Japanese word “kibo” and the English word “robot”. “Kibo” means “hope” in Japanese.
The Japanese car company Toyota made the small robot. They say it is as smart as a 5-year-old child. The robot’s designer, Fuminori Kataoka, says Kirobo will be a good companion for the old people. It can keep people happy on long trips. It can also help care for sick people.
Toyota will sell the robot in Japan first, then do the rest of the world.
1. What can Kirobo Mini do?A.It can tell stories. | B.It can answer question. |
C.It can tell only one voice. | D.It can dance with its whole body. |
A.a Japanese word | B.an English word |
C.the Japanese word “kibo” and the English word “robot” | D.The Japanese word “Kibo” and the English word “hope”. |
A.who made Kirobo | B.when people can buy Kirobo |
C.what Kirobo looks like and what it can do | D.the price of Kirobo |
A.It is 20 centimeters long. | B.It can care for sick people. |
C.A car company from England made it. | D.It is as small as a 5-year-old child. |
![](https://img.xkw.com/dksih/QBM/2019/12/11/2352846815617024/2352965820448768/STEM/b89a63af82ee4af29df3b2f664249103.png?resizew=649)
CHANGSHA--China’s first way for smart driving buses on open roads began its trial operation (试运行) in Changsha on Friday. The test bus line is 7.8 km long with 22 stations on the two-way trip. During the trial operation, four smart driving buses will be put into use. They need to pass through traffic lights, make turns and stop at the stations. One of the smart driving buses successfully finished the whole trip. It went along the planned road on Friday morning without a driver.
CHONGQING--The first Reading and Writing Project with Famous Writers on Campus is going on at Chongqing No.1 Middle School on December 14th and 15th. The school invited ten famous writers like Bi Feiyu, Ouyang Jianghe and Li Er. They had a talk with the teachers and students about how to improve their reading and writing skills. Both the writers and the listeners said they learned a lot because of the activity.
1. There are ________ smart driving buses being put into use during the trial operation.A.fourteen | B.fifteen | C.twenty-two | D.four |
A.become famous | B.improve reading and writing skills |
C.drive smart buses | D.improve learning skills |
A.the news | B.a travel magazine | C.a story book | D.a dictionary |
【推荐3】China has named the nation’s first Mars rover (火星车) Zhu Rong. For all of us, Zhu Rong is the best name.
In an ancient Chinese story, Zhu Rong had the face of a man and the body of an animal. He rode on two dragons. When he had a big fight with Gong Gong, the god of water, Zhu Rong won. But after the fight, the human world came into complete darkness. Then he brought fire from heaven (天国) to the world.
“Zhu Rong is regarded as the earliest god of fire in traditional Chinese culture, ” a space official said. “The first Mars rover was named Zhu Rong. The name symbolizes (象征) light and hope for space exploration (探索) in our country, and means to guide humans to continue exploration.”
After leaving the earth last summer, Zhu Rong moved around Mars for several months and landed on it in May. In recent years, our country has sent up the world’s first quanturm satellite (量子卫星), and Chang’e-4 has made a soft landing on the moon. We have made great progress in space technology and will soon start building our own space station.
1. What Zhu Rong brought from heaven to the world was ________.A.fire | B.wars | C.water | D.animals |
A.a big fight | B.complete darkness | C.light and hope | D.Chinese culture |
A.the earth | B.Mars | C.the moon | D.the sun |
A.Zhu Rong is a bad person in an ancient Chinese story |
B.China has made little progress in space technology |
C.the writer is proud of China’s space technology |
D.the official doesn’t like the name Zhu Rong |
【推荐1】I often go shopping on Sundays. I go to the supermarket with my mother on Sunday morning in a car. My father likes fruit very much. We buy some red apples for him. My mother likes yellow bananas, but they’re green. Look! The strawberries are very nice. “Mum, do you like them?” I say to her. “Yes, I like strawberries very much.” My mother buys some for herself. The oranges are very nice. She buys some for me. I like oranges very much. We need some vegetables. The vegetables in the supermarket are very good. I don’t like broccoli, but my parents like it. I like carrots. After shopping, we have some French fries, milk and ice cream. And we go back home with the fruit and vegetables.
1. When do I often go shopping?A.On Mondays. | B.On Saturdays. | C.On Sundays. | D.On Fridays. |
A.By bus. | B.By car. | C.On foot. | D.By bike. |
A.green bananas | B.red apples |
C.yellow bananas and strawberries | D.red apples and oranges |
A.red apples | B.oranges | C.bananas | D.vegetables |
A.oranges | B.carrots | C.fruit | D.broccoli |
【推荐2】One day, when a successful manager opened his car door, a dog sleeping under his car came out and bit his leg! He threw a stone at the dog, but he was unable to hit it. How angry he was!
On reaching his office, the manager called a meeting of the workers. He took out his anger on them. Then, the manager’s anger spread all over the company, and no workers did their work well. The manager was still angry after seeing a doctor. When he returned home, his wife asked him, “Why are you so late today?”
The manager shouted, “I didn’t go to the office to play soccer. I went to work. So don’t ask such stupid questions!” His wife was troubled about being shouted for no reason. She hurried to the kitchen and broke a bowl. Then she turned her anger on their son who was watching TV. “This is all you do. It’s clear that you have no interest in studying! Turn off the TV now!” she shouted loudly. The son became upset as well. He walked out of his house and wandered in the street.
Just then he saw a dog passing by. He picked up a stone and threw it at the dog angrily. The dog ran away, barking in pain.
Sometimes, when we are angry about something, we might take out our anger on others. Perhaps it may make a lot of trouble. So it is important for all of us to learn how to control our anger.
1. Why was the manager angry?A.A dog bit his leg. | B.A thief stole his car. |
C.His workers didn’t work well. | D.His business was not successful. |
A.出发 | B.邀请 | C.发泄 | D.取出 |
A.the manager went to the office to play soccer | B.the manager returned home very late that day |
C.the son had no interest in studying and watched TV | D.the manager shouted at her for no reason |
A.embarrassed | B.upset | C.relaxed | D.tired |
A.We should not be angry. | B.We should be kind to dogs. |
C.We should not get home late. | D.We should learn to control our anger. |
【推荐3】We have to arrive at school before 8 o’clock. It’s a problem(问题)for me because I don’t wear a watch and I don’t have a bike! I’m often late.
Jack
We can use phones at lunchtime. We mustn’t use them in class. But some of my classmates use them during(在……期间)tests. It’s not right for them to do that .
Jamie
We must wear uniforms at school. That’s terrible. I don’t want to wear the same clothes every day. We mustn’t listen to music in the classroom. It’s so boring!
Nina
We have to stand up(起立)when the teacher comes into the room. We must wear uniforms, so we have the same clothes. We have to do two hours’ homework every day. It is a lot! And we can’t get out of the school at lunchtime.
Alice
1. What problem does Jack have?A.He is often late for school. | B.He needs a new bike. | C.He can’t find his watch. |
A.use phones | B.use phones in class | C.use phones during tests |
A.Difficult. | B.Too much. | C.Easy. |
A.Jack. | B.Nina. | C.Alice. |
A.Two. | B.Three. | C.Four. |