Do you know 5G? It is the fifth generation(代)of mobile network technology. These new networks are coming.
China just issued commercial licenses(发放商用牌照)for 5G on June 6, 2019. This means that China’s telecom companies will be able to offer 5G networks for mobile phone users.
Each mobile network generation is faster and more powerful than the one before it. 1G let us talk to each other. 2G let us send messages. 3G gave us data(数据)and the Internet. And 4G made all of these things faster. What’s special about 5G?
5G has a very short delay(延迟) between sending and receiving information.
Now, 4G takes about 100 to 200 milliseconds(毫秒)to send and receive data. But 5G will get it down to 1 millisecond or less—this is almost real-time.
This big change will not only make our mobile Internet faster, but also deeply change our lives. Read on to find out how.
5G + entertainment(娱乐)
5G networks are about 100 times faster than 4G. This means you can download a movie in seconds using 5G.
Also, virtual reality(VR)games will become more popular with 5G. The short delay of 5G will make the games feel even more real.
5G + transport
5G will also bring us safer self-driving cars. These cars can send signals(信号)to each other. They also talk to traffic lights and road sensors(传感器). 5G will allow cars to react(反应)even faster than human drivers.
5G + smart homes
5G also makes the Internet of things possible. Internet of things is a large network that connects everything to the Internet. Smart homes are part of it.
For example, your toaster can automatically(自动地)start making breakfast after your alarm rings. And if its sensor feels the air becoming dry, a smart sprinkler(洒水器)could water your plants by itself.
1. What’s the writer’s purpose in writing the third paragraph?A.To explain 5G is the best of all. |
B.To share his knowledge about 5G. |
C.To encourage people to use the new network technology. |
D.To show the development of mobile network technology. |
A.Health care | B.Entertainment. | C.Transport. | D.Smart homes. |
A.Download a movie in minutes. | B.Put everything onto the Internet. |
C.Make self-driving cars safer. | D.Make food more easily and faster. |
A.5G will change our lives in many ways. | B.Mobile networks are changing for better. |
C.5G will make the Internet of things possible. | D.5G networks for mobile phone users are coming. |
相似题推荐
【推荐1】We have noticed our life becoming a little easier these days. Now, when you go to a certain shopping mall, you can enjoy its free WiFi there. When you want to take a taxi, you can book one with your phone. In fact, all these can be seen as the basic parts of a smart city.
The idea of a smart city was brought up by US company IBM in 2010.Gernally, a smart city is a city that uses digital(数字的) technologies such as the Internet to improve city planning, save money and resources, and make our life convenient. How smart can a city be? Here are great examples that we can learn from.
In 2009, Dubuque became the first smart city in the US. The city used smart water meters to take the place of traditional water meters. They can examine water waste and leakage(泄露) and send data to let the house owner know. The same system is used for other city resources like electricity and natural gas. This way, people know how they use their resources and are glad to help reduce waste.
Santander in Spain also gives us a look at the future. If people point a phone toward a nearby bus stop, the phone quickly shows all bus lines that serve the stop as well as their arrival times. The government organized a research team and provided an App that collects data on almost everything: light, temperature, and the movements of cars and people. Opening the APP near a supermarket provides immediate information on special offers.
1. A smart city improves city planning, save money and resources and makes our life convenient by ______.A.using a robot. | B.the government. | C.using digital technologies. | D.working hard |
A.An English Company first raised the idea of a smart city. |
B.Digital technologies are used in smart cities. |
C.A smart city is mainly made up of free WiFi and phones. |
D.A smart city is still an idea and hasn’t come into being. |
A.cleaning water. | B.supplying water. | C.saving water. | D.producing water. |
A.health care. | B.business. | C.traffic controlling. | D.public transportation. |
A.Digital technologies help improve city planning. |
B.Smart cities will make our future life better and smarter. |
C.Smart cities are very common in both Dubuque and Santander. |
D.Spain and the US take the leading position in building smart cities. |
Now, China has more than 162 million Internet users, according to the China Internet Network Information Centre. This is the second highest number of user in the world after the United States. Today, 66% of Chinese “netizens(网民)”are teenagers. “They spend about thirteen hours every week online,” said Qian Hulin, an Internet expert(专家). Doctor Song in Beijing Xuanwu Hospital said about 14% of Chinese netizens who are teenagers often lasted over ten hours to play online games.
The main reasons why teenagers surf the Web are to search for information, to communicate with others and to have fun. On the Internet, teenagers can find out almost anything. And surfing the Web can help students with their homework and widen their knowledge.
Li Dong, a teacher in NO. 41 Middle School in Shijiazhuang, likes her students to use the Internet. “When we talk in class, students who surf the Net usually know more background information than the others,” she said.
In addition, people can use the Internet to write letters or stories and send emails. Many teenagers〖JP〗 keep in touch with their friends online. It is cheaper than phoning somebody far away and also much quicker.
1. has the most Internet users in the world according to the article.
A.China | B.America | C.Canada | D.Russia |
A.107 million old | B.22.7 million old |
C.107 million young | D.22.7 million young |
A.having fun |
B.searching for information |
C.shopping on line |
D.communicating with others |
A.thinks surfing the Net can help students spend less time on homework |
B.thinks her students can get more background information than the others |
C.wants her students to talk to her about their hobbies and interests |
D.wants to know what her students do and think about at home |
A.Giving them a call. |
B.Going to see them. |
C.Writing a letter to them. |
D.Sending emails to them. |
【推荐3】When life takes you away from home, take technology to help guide you. Apps can help make your trip easier and more fun. Some apps help you plan your trip and others help you travel.
TripIt
TripIt is a helpful App to organize travel plans. Download the app to have all of your travel plans handy in one place.
TripIt will create a travel plan that will be shown in the TripIt app on your phone. No need to search for emails when it is time to travel. Everything will be in one place, on the TripIt app.
TripIt is free.
Google Translate
When traveling outside your home country, you may need some language help. Google Translate is an app that can help you understand a foreign language.
The Google Translate APP translates between 103 different languages. Copy text into the app to see a translation. You can also handwrite text onto the screen. Use your phone’s camera to see a translation of a sign. Point the lens (镜头)at words to see the translation on the phone’s screen. The app works even without the Internet connection.
Google Translate is free.
Offline APPs
Traveling often means you are offline and away from the Internet. When camping in the wild, flying on a plane, sailing on a boat or riding in the car, you should use Offline APPs to save a lot of money.
Open Table
Open Table is an app to help users discover and book restaurants. Search by locations, cooking and prices.
Open Table includes 31,000 restaurants around the world. Check the app to find information and book within the app.
根据材料内容选择最佳答案。
1. What can TripIt do? ________
A.It can help you plan your trip. | B.It can help download apps. |
C.It can help you communicate. | D.It can help organize your emails. |
A.Look for the website. | B.Read it to the phone. |
C.Find out the language. | D.See it with the phone’s camera. |
A.TripIt. | B.Google Translate. | C.Offline APPs. | D.Open Table. |
A.To enjoy food for free. | B.To run some restaurants. |
C.To book food ahead of time. | D.To learn cooking in restaurants. |
A.To talk about the use of Internet. |
B.To introduce something useful. |
C.To show the power of science. |
D.To advise readers to go travelling. |
【推荐1】Can the “double reduction” policy (双减政策) really help you? Some students have different answers. Let’s have a look.
Shen Yuzhe, 13, Beijing
It really helps me a lot. I don’t need to do too much homework. I can finish it at school. I don’t need to take it home. I can swim or play ping-pong with my father. I’m very happy.
Zhang Hangming, 13, Tianjin
I like the “double reduction” policy very much, because I can have free time to do my favorite things on Saturday and Sunday. I like to play the piano and play volleyball. I join a music club and I can go there on Saturday.
Yu Zhiyue, 14, Jiangsu
With the “double reduction” policy, I really have less homework to do. But now I can only take tutoring classes (辅导班) from Monday to Friday. So Monday is a very long day for me. On that day, I need to have classes on the computer at home after school. I am very exhausted.
Cui Ruqi, 12, Liaoning
It makes me happy weekends. I can play the piano or read my favorite books on the weekend. I want to be a musician like my mother. She can play the piano and the violin very well.
1. How many students like the “double reduction” policy?A.One. | B.Two. | C.Three. | D.Four. |
A.疲惫 | B.开心 | C.自豪 | D.紧张 |
A.Yu Zhiyue is free after school on Monday. |
B.The four students are in the same middle school. |
C.Cui Ruqi’s mother can teach her to play the piano. |
D.The policy makes Zhang Hangming have a busy weekend. |
Children in America don’t have much homework to do. They keep themselves busy by playing camp games. A parent says, “My daughter Shirley usually attends different camps. We don’t ask her to spend plenty of time on maths problems or spelling tests.”
Children in Australia take partin activities on over twenty different themes (主题). They learn painting, dancing, singing, history, culture and so on. Parents can accompany their kids to enjoy the learning process and to build a closer relationship with them.
These are what African kids do: build a boat, have a camel race, make a drum and make a rag (碎布) football. Don’t you think it is interesting that kids in other places have no idea how to make a drum, but kids in Africa do?
Plan your holiday well and try what you want to try. Make a good plan and you will have a lot of fun.
1. Where does Shirley come from?
A.Asia. | B.America. |
C.Australia. | D.Africa. |
A.提醒 | B.监视 | C.陪伴 | D.排斥 |
A.play camp games | B.do spelling tests | C.build a boat | D.make a drum |
A.The passage was written before October. |
B.Kids in America are good at maths. |
C.Kids in Australia spend much time on homework. |
D.Kids in Africa don’t play football. |
A.To advise kids to make holiday plans. |
B.To introduce some good holiday camps. |
C.To encourage kids to make friends with parents. |
D.To show the importance of doing homework during holidays. |
【推荐3】It is well-known that many hotter countries are poorer. Now, according to a new study from Harvard University, the University of California and Georgia State University, hotter weather makes students get poorer grade. What's more, hotter weather may make students lose the interest in learning in both the short term and the long term.
Researchers reported that hot weather on test days resulted in poorer grades. They also found that students’ grades weren't good when the temperatures of the test days were higher than the average(平均的) temperature throughout the school year. The study is the main research into the effect of hot weather on students in the USA. Researchers studies how test scores from 10 million American students were affected by the weather. Their findings showed that an average increase of 0.55°C in the temperature over one year resulted in a one percent decrease(减少) in learning.
The research is in a paper called Heat and Learning and was published by the USA’s national Bureau of Economic Research. One of the opinions in the study is that global warming may make a difference to learning and the income-earning potential(盈利潜力) of students around the world. The researchers predicted that if global temperatures continued to rise, an American student could lose $25,000 on average during his lifetime because of lower exam results. They also found that using air conditioning(空调) in classrooms could be a useful way of helping students get better grades.
1. What does the underlined world “effect” mean in Chinese?A.管理 | B.要求 | C.依赖 | D.影响 |
A.Air conditioning can help students find good jobs. |
B.Students can make much money if they work in cooler countries. |
C.Global warming may lower the income-earning potential of students. |
D.American students won’t make much money because of global warming. |
A.Never take an exam when it’s hot. | B.Low income(低收入) has to do with hot weather. |
C.hotter weather leads to poorer exam results. | D.Schools should fix air conditioning in classrooms. |
A.A notice. | B.A letter. | C.A guidebook. | D.A magazine. |