1、Unit 4 Information technologyI. 根据括号内的提示将下列句子翻译成英语。1. 因特网使人们能够与国外的朋友交流。 (enable)_2. 她的工作主要是销售电脑。 (be concerned with)_3. 当然，除了周薪外，我还得到了很多小费。 (in addition)_4. 让你的眼睛聚焦在远离你的物体上。 (focus on)_5. 从我们窗口可以看到一片绿色乡村的美景。 (view)_6. 今天你能帮我个忙去学校接萨姆吗？ (favour)_II. 选用方框内合适的单词及短语并用其正确形式完成下面短文（每项限用一次）。obviously, identi
2、ty, hairstyle, selection, a variety of, experiment, sensible, nowadaysAvatars are often cartoony pictures with facial features like the 1. _, theclothing, and accessories (配饰) that allow you to personalize your picture. 2. _a lot of websites give you the chance to represent yourself with an avatar r
3、ather than a picture ofyourself. Can people judge your personality from an avatar you create?This question was addressed in a(n) 3. _ by some researchers. Thousandsof people took part and were offered a wide 4. _ of avatars to choose frombased on the instructions given. The results were somewhat bey
4、ond peoples expectations. Ingeneral, the aspects of avatars that people thought were most important for judging a person spersonality did not accurately describe their 5. _.According to the research, the main reason is that some people generally try to select avatarsthat represent themselves correct
5、ly while others aim to show themselves in 6. _different ways to the electronic world from what they appear in real life.So, what did the results mean? Generally, people 7. _ prefer to drawinferences (推论) about characteristics from avatars. However, the aspects of the avatars that theyuse to make jud
6、gments about someones personality are not necessarily 8. _.Thus, people may overestimate (高估) their ability to learn something about others from avatars.III. 用本单元所学词汇及语法知识完成下面短文（每空一词）。Talking about information technology, I should say I have seen its development frombabyhood to adulthood, during whi
7、ch time I grew up from a kid depending on an 1. a_clock to wake up to an adult to 2. _ (下载) wake-up ringtones (手机铃声) to my phone.Who would have believed 20 years ago that, with a phone in your pocket, you would be ableto travel long distances without a wallet, something that is becoming increasingly
8、 useless with the3. i_ of digital payment? Just think about how much 4. _ (方便) we owe to atime of digitisation. I remember my dad would always turn on the TV around dinner time for theweather report. But since he got his smartphone, he has been using an 5. a_ whichprovides an hourly update of the ch
9、ange of weather. My mom has also found on Internet TV awhole new world of TV programmes on the 6. _ (推荐) of the Internet. I used to keep adiary in a notebook, but now my notebook is my computer, which also serves as a(n) 7. _(极好的) dictionary and my library. While I must 8. a_ that the increased effi
10、ciency (效率) of the information age is desirable, I have become concerned about its side 9. e_. Oneday when my daughter asked me if she could have her own smartphone, my answer wasbrief, “Yes, on your 18th birthday.” I have seen many cases of kids becoming 10. _ (沉迷于) smartphones, eyes on the screen
11、for much time to 11. e_ all kinds ofunimportant stuff. I feel obliged (有责任的) as a parent to teach my kid to take advantage of anocean of information rather than be controlled by it. Too much information is 12. i_ veryworrying and upsetting.IV. 从括号内选择合适的内容完成下面短文。Some of the most quoted quotes by expe
12、rts in IT history have turned out to be ironic (讽刺的).1899“Everything that can be invented has already been invented.” Charles H. Duell, director ofthe U.S. Patent Office believed it 1. _ (would be, will be) a future with no moreinventions. A century later, the world is telling us that there 2. _ (ar
13、e, were) still manythings to be invented, and many things that were once thought impossible are becoming true.1943“I think there is a world market for maybe five computers,” said Thomas Watson, chairmanof IBM. Thomas Watson, referring to a time when the world needed only five mainframecomputers to s
14、atisfy all computing requirements, 3. _ (had, would have) no idea that thedemands on data processing (数据处理) 4. _ (became, would become) so great. Time haschanged, and now is the age of the PC. For the world market capacity (容量) for PCs, we nowhave to use “billion” after numbers.1949“Computers in the
15、 future may weigh no more than 1.5 tons.” This was from PopularMechanics, talking about the future of science.The technology has completely been beyond peoples imagination, and the computer 5._ (had long said, has long said) goodbye to its huge weight. Todays microprocessorchips (微处理器芯片) are used in
16、 mobile phones, digital cameras and other hand-held electronicdevices. Some experts predicted that one day nanotechnology 6. _ (would make, willmake) chips as thin as a hair.The surprising history of computing over the past years has taught us not to take expertscomments too seriously. Anyone can ma
17、ke mistakes, and our lives will eventually become ahistory of limitations. When humans predicted confidently that something 7. _ (wouldhappen, was happening) in the future, they tended to forget they 8. _ (would fail, havefailed) to learn the lessons of history.V. 阅读下面短文，在空白处填入 1 个适当的单词或括号内单词的正确形式。T
18、he technology of 5G is the next great increase in speed for wireless (无线的) devices. It 1._ (include) both the speed at which mobile users download something to their devices andthe latency (等待时间) they experience between sending 2. _ receiving information.5G aims to deliver data rates (数据速率) that are
19、 10 to 100 times faster than present 4Gnetworks. Users should expect 3. _ (see) download speeds in the order of gigabits persecond (Gb/s), much 4. _ (great) than the tens of megabits per second (Mb/s) speeds of4G. Mobile devices will be able to send and receive information in less than one-thousandt
20、h of asecond, appearing to be happening 5. _ (instant) to the user. To reach these speeds, the 6._ (introduce) of 5G requires new technology and systems.“Thats important because it will enable new apps 7. _ are just not possible today,”said Harish Krishnaswamy, an expert on electrical engineering at
21、 Columbia University in NewYork. “8. _ example, at gigabits per second data rates, you could potentially download amovie to your phone or tablet in a matter of 9. _ (second). Those types of data rates couldenable virtual reality apps or self-driving cars.”Apart from 10. _ (require) high data rates,
22、new technologies that communicate withthe users environment like augmented reality or self-driving cars will also require extremely lowlatency. For that reason, the goal of 5G is to achieve latencies below the 1-millisecond mark.答案I.1. Internet enables people to communicate with friends abroad.2. He
23、r job is mainly concerned with the sale of computers.3. Of course, in addition to my weekly pay, I got a lot of tips.4. Let your eyes focus on objects that are further away from you.5. The view from our window is the beautiful green countryside.6. Could you do me a favour and pick up Sam from school
24、 today?II.1. hairstyle 2. Nowadays3. experiment 4. selection5. identity / identities 6. a variety of7. obviously 8. sensibleIII.1. alarm 2. download3. impact 4. convenience5. app 6. recommendation7. super 8. admit9. effects 10. addicted to11. explore 12. indeedIV.1. would be 2. are3. had 4. would become5. has long said 6. would make7. would happen 8. would failV.1. includes 2. and3. to see 4. greater5. instantly 6. introduction7. that / which 8. For9. seconds 10. requiring
