一轮复习阅读材料-unit20-new-frontier.doc

—轮复习阅读材料Unit20 New Frontiers阅读下列文章，完成阅读任务AIn the future, the Internet will be different fi-om what it is now. There will be many more websites. It is predicted that in the year 2100, there will be hundreds of billions of websites. This means that the use of search engines will become much 1 (importance). And there willalso be many more sites in different languages. This means that on every proper website, there will be 2 (link).with the language you want.Another prediction on the Internet is 3 data transmission (传输)speed will increase 4 (global). According to Akamai Technologies, the average global data transmissionspeed in late 2009 5 (be) 1.7 megabits per second. Compare that to the record for datatransmission speed set by Bell Labs： 100 billion megabits per second・ 6 that speed, youcould transmit 400 DVDs worth of data every second・ That's 7 enormous gap between what's currently possible and whafs commercially available・ But as time 8 (pass) . the costs of producing super-high-speed networks will decrease・In the future, people will live under the sea and the housing shortage will 9 (solve). There will be lots of glass domes (穹状建筑物)under the sea, 10 allow people to look all around into the sea・ Air will be provided via air pipes which lead to the open air. You can travel from one dome to another via a kind of submarine which will also be made of glass. The domes will be so beautiful and the view under the sea will be so impressive that many people will prefer to live under water, and less people will prefer to live on land・ This will have a positive effect on the environment on land.In the future we won't use oil or gas as energy any more・ We will make use of sunlight, water and wind. Cars will run on water. Just fill your tank with water, and you can drive further than you could drive with the same amount of gasoline・ Also, the exhaust won't be damaging to the environment, because it'll just be water vapor. So the water cycle wont change, we'll keep the same amount of water on the earth, and we won't run out of water. Also, all energy will be supplied by natural sources: sunlight, wind and water.Taskl: Fill in the blanksTask2： Summarize the main idea of the passage. Task3: Choose the best answers1 • What can we know about the Internet in the future from the first two paragraphs?A. It will be more important to use search engines.B. Most of the websites will be designed in English・C. People not knowing a foreign language will find it hard to surf the Internet.D. The gaps between developed countries and developing countries in Inter net usage will be great2. Why are super-high-speed networks not available to the public at present?A. Because the cost is too high. B. Because there are technical difficulties.C. Because Bell Labs doesn't want to sell its technique.D. Because governments haven't recognized their value.3. The underlined word "exhausf in Paragraph 4 probably refers to “ 二A. oil product B. waste air C• solar energy D. wind energy4. What can we infer from the text?A. The Internet is the most advanced invention in history・B. Water will run out sooner than we have expected.C. Houses under the sea will be made from metal・D. Sunlight, wind and water will benefit people more in the future.BWould you like to live in a city where buildings turn the lights off for you, where self-driving cars find the nearest parking space, and where even the rubbish bins know when theyte full?Although it might sound like science fiction, living in a "smart" city like this could happen sooner than you think.Towns we have lived in for centuries are being upgraded, while completely new cities arebeing built.One such place is Songdo in South Korea. Every home there will have a built-in “telepresence^ system —allowing users to control the heating and locks; take part in video conferences； and receive education, healthcare and government services.Around the city, escalators（自动扶梯）will only move when someone is on them, and offices and schools will all be connected to the network.The digital mastermind（策划者）behind Songdo is the company Cisco. Indeed, technology firms around the world such as IBM, Siemens and Microsoft are already selling software to solve a range of city problems, from water leaks and air pollution to traffic jams. For example, IBM is gathering traffic data in Singapore which it uses to predict where traffic jams will occur—an hour before they happen.So what is all this smart technology for? Many hope all this connectedness will make cities greener, more sustainable（可持续 的），and more efficient.And with 75% of the worlds population predicted to live in cities by 2050, the transport system and emergency services will need to modernise to cope with all the new arrivals.But making cities smarter is only part of the solution, according to Dan Hill, chief executive（主管）of research firm Fabrica・ He said, “We don't make cities to be efficient, we 。