2021年新教材高中英语 Unit 3 The Internet双基训练金卷(二)新人教版必修第二册.docx
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1、Unit 3 The Internet(本卷满分100分)一、阅读理解(每小题2分,共16分)AAll networks like 3G and 4G will be things of the past, because 5G will be reachable in the near future. So, whats so special about a 5G future? First of all, its download speed can be as fast as 20GB/s, which is 100 to 200 times that of 4G. But whats
2、more impressive is 5Gs low delay rate. Now, 4G takes an average of 200 milliseconds(毫秒) to send and receive information. But 5G will get it down to 1 millisecond.5G is a great breakthrough. Its going to change the way equipment connects to the Internet, and more importantly, to each other. And self-
3、driving cars may be one of the biggest breakthroughs to come out of 5G. Human reaction time is 200 milliseconds, yet we still have accidents every day. The self-driving car under a 5G network could react and communicate its reaction to hundreds of cars around it, all within 1 millisecond. Itll play
4、a great role in preventing car accidents and ending traffic jams completely.5G can benefit us in many other ways. Operations could be performed by robots controlled by experts from the other side of the world. Therefore, more lives will be saved in time. Factories can be staffed by robots that can c
5、ommunicate their tasks to each other, and they can do more work efficiently over a 5G network. Imagine a group of drones(无人机) flying over a field of crops, using sensors(传感器) on the ground to sort, pick, feed, and water plants all on their own. Then farmers wont have to work so hard anymore.However,
6、 5G is not perfect. One major disadvantage has to do with why its so fast. 5G uses the millimeter waves, while 4G uses the 15 to 40 centimeter-long waves. And shorter waves go fast but not very far. On 4G networks, the signal can go 10 kilometers. But the 5G signal can go at most 300 meters, and it
7、cant even go through walls or rain. So, what does that mean? Having such a short signal distance means we need to build a lot of transmitters(信号发射塔) in the future.1. How does the author show us 5Gs advantages in Paragraph 1?A. By giving examples of the uses of 5G.B. By making comparisons between 4G
8、and 5G.C. By explaining the scientific principles of 5G.D. By analyzing 5Gs development from 4G.2. According to the author, the self-driving cars will _.A. cause more car accidentsB. slow down 5Gs developmentC. run without being connected to the InternetD. have a much faster reaction speed than huma
9、ns3. What does the underlined part “be staffed by robots” in Paragraph 3 mean?A. Be built by robots.B. Have robots as workers.C. Offer employees home robots.D. Produce more medical robots.4. What does the last paragraph mainly talk about?A. The main weakness of 5G networks.B. How to make 4G networks
10、 more perfect.C. The types of long waves and short waves.D. How to improve the signal of mobile phones.BThe Consumer Technology Association, formerly called The International Consumer Electronics Show, or CES, believes about 170,000 people will attend the show. About one-third of them are reported t
11、o come from countries besides the United States.More than 4,000 businesses will show products used through the Internet such as gaming, self-driving cars, artificial intelligence(人工智能) and robotics. One of the biggest stars at CES this year is the voice-controlled digital(数字的) assistant. While the t
12、echnology is not new, many companies will show off the latest digital assistants.Equipment controlled by digital assistants, especially those turned on by voice, were already big sellers in 2017. This year, Google, Amazon and Apple are expected to release even more products to keep up with the risin
13、g demand.Digital assistants are powered by artificial intelligence and machine learning technology. They are designed to learn users preferences over time and then “think” and act on their own. Some of the biggest developments in technology have come in the area of home automation(自动化). Amazon Echo,
14、 Google Home, Apples Home Pod and Microsofts Cortana are a few examples of voice-controlled equipment. All include smart speakers that “talk” to users inside the house and can perform operations.Experts with the Consumer Technology Association say sales of smart speakers are expected to nearly doubl
15、e in 2019.The Internet-linked products can play music or find information when asked questions. They can also control equipment such as lighting, cameras, televisions and temperature controllers. Among new “smart” home products to be released at the CES are voice-controlled washing machines, refrige
16、rators, showers and toilets. There is also much new physical fitness and health-related equipment on show. Some are designed to help people create the best personal fitness plans to reach their goals. Wearable health equipment is used to study and measure body conditions, while others help recognize
17、 signs of disease.5. What will be shown at CES?A. Books about robots.B. International fashion.C. Schoolsteaching art.D. Equipment related with the Internet.6. Why are Google, Amazon and Apple expected to develop more intelligent products?A. To create music.B. To treat all kinds of diseases.C. To mee
18、t the increasing needs.D. To make experiments in space.7. How do users communicate with the equipment of home automation?A. By fax.B. By voice.C. By email.D. By body language.8. In which part of a newspaper may this text appear?A. Art.B. Health.C. Education.D. Technology.二、七选五(每小题2分,共10分)The Interne
19、t has opened up a whole new online world for us to meet, chat and go where weve never been before.But just as in face to face communication, there are some rules of behavior that should be followed when online. 9 Imagine how youd feel if you were in the other persons shoes.For anything youre about t
20、o send: ask yourself, “Would I say this to the persons face?” if the answer is no, rewrite and reread. 10 If someone in the chat room is rude to you, your instinct(本能) is to fire back in the same manner. But try not to do so. 11 If it was caused by a disagreement with another member, try to fix the
21、situation by politely discussing it. Remember to respect the beliefs and opinions of others in the chat room. 12 Offer advice when asked by newcomers, as they may not be sure what to do or how to communicate. When someone makes a mistake, whether its a stupid question or an unnecessarily long answer
22、, be kind about it. If its a small mistake, you may not need to say anything. Even if you feel strongly about it, think twice before saying anything. Having good manners yourself doesnt give you license to correct everyone else. 13 At the same time, if you find you are wrong, be sure to correct your
23、self and apologize to those that you have offended.It is not polite to ask others personal questions such as their age, sex and marital status. Unless you know the person very well, and you are both comfortable with sharing personal information, dont ask such questions.A. Its natural that there are
24、some people who speak rudely or make mistakes online.B. Repeat the process till you feel sure that youd feel comfortable saying the words to the persons face.C. Everyone was new to the network once.D. The basic rule is simple: treat others in the same way you would want to be treated.E. When you sen
25、d short messages to a person online, you must say something beautiful to hear.F. You should either ignore the person, or use your chat software to block their messages.G. If you do decide to tell someone about a mistake, point it out politely.三、完形填空(每小题1.5分,共30分)Many people tend to bring electronic
26、products when travelling, including me. Last year I just ruined my summer vacation by bringing along a modern convenience: the iPad.Instead of looking at nature, I 14 my e-mail. Instead of reading great novels, I stuck to reading 15 newspapers each morning. And that was the problem: I was acting 16
27、I were still in the office. My body was on vacation but my 17 wasnt.So this year I made up my mind to try something 18 : getting away from the Internet. I knew it wouldnt be easy, 19 Im not good at self-control. But I was 20 . I started by 21 the iPad to my wife. Then, a stroke of luck: The mobile p
28、hone 22 at our cabin was worse than in the past. I was trapped in a small circle and 23 to carry out my plan. Largely 24 from e-mail and my favorite newspaper websites, I had little way to 25 the world. I had no 26 but to do what I had planned to do all along: read books.With determination and the s
29、trong support of my wife, I succeeded in my vacation struggle 27 the Internet. I finally 28 that it was me, of course, not the iPad, that was the 29 .I knew I had 30 when we passed a Starbucks and my wife asked if I wanted to stop to use the Wi-Fi. “Dont need it,” I said. 31 , as we return to work,
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