高中英语 课时作业（二）Unit 4 Cyberspace 北师大版必修2(2021年最新整理)

1、2016-2017学年高中英语 课时作业（二）unit 4 cyberspace 北师大版必修22016-2017学年高中英语 课时作业（二）unit 4 cyberspace 北师大版必修2 编辑整理：尊敬的读者朋友们：这里是精品文档编辑中心，本文档内容是由我和我的同事精心编辑整理后发布的，发布之前我们对文中内容进行仔细校对，但是难免会有疏漏的地方，但是任然希望（2016-2017学年高中英语 课时作业（二）unit 4 cyberspace 北师大版必修2）的内容能够给您的工作和学习带来便利。同时也真诚的希望收到您的建议和反馈，这将是我们进步的源泉，前进的动力。本文可编辑可修改，如果觉得对

2、您有帮助请收藏以便随时查阅，最后祝您生活愉快 业绩进步，以下为2016-2017学年高中英语 课时作业（二）unit 4 cyberspace 北师大版必修2的全部内容。8课时作业(二）unit 4cyberspace阅读理解aa computer is very versatile （多功能的)it can be used to do many things for you，like playing games，teaching，or helping with a business。so many people are going to buy computers to help them

3、with their work or study or just for fun。if you want to buy a computer，you must choose one carefully because there are too many new computers in the shop。but if you follow these tips，you will find it easier。firstly，you must know why you want a computer。is this computer very useful for you？which is t

4、he most important use of the computer：to play games，to help with your business,or to help with your schoolwork?secondly，look carefully at the programs the computer can use.some slow computers cannot run the latest or large programs.if you are going to play games on the computer or design something，y

5、ou have to buy a computer fast enough for these jobs.some people also write their own programs.if you want to write your own，it is important to look at the computer language。is it easy to learn?thirdly，decide the smallest，or the least needs you have for your computer。for example，do you want a keyboa

6、rd?is a tfet display important to you?if you get on the internet，you will have to buy a modem，too.fourthly，when you have limited your choices for a few computers,look at the secondary uses and programs。for example，if your main reason for buying a home computer is to play games，you may take computer

7、a instead of computer b because computer a also can be used as word processor。fifthly，think of the prices。there are two prices to think about and choose。the first is the price you must pay to take the computer home。the second is the price of programs and software that you want to buy at a later date

8、。lastly，be sure to try out the computer before you buy it.you may ask a friend who knows computers better to help you。he can help you to choose the computer that will be best for you and cost you least.you can also ask a worker in the computer shop to help you to make the decision.1if you are going

9、to design something，you should buy .aa fast computerba slow computerccheap computerdan expensive computer解析： 细节理解题. 由第四段最后一句话可知答案。答案：a2if you do not know computers well，you should .aborrow a computer from othersbnot buy a computercask your parents to helpdask someone who is good at computers to help

10、 you解析：推理判断题.由最后一段特别是第二句话可推知答案.答案：d3you should take steps before you buy a computer.afivebsixcfour dseven解析：细节理解题.文章的六条建议就是买电脑前应采取的六个步骤。答案：b4the passage mainly tells us .aabout computersbhow to buy a computercwhat computers are good to usedwhich computers are expensive解析：主旨大意题。文章的第二段为本文的主题段。可判断本文的主旨

11、大意为：如何买电脑。答案：bbthe internet brings us many advantages。with the internet，people can send and receive emails。on the internet，people can skim over news.using the telnet，the user anywhere on the internet can log into any other machine on which he has an account.it is possible to use the ftp program to c

12、opy files from one machine on the internet to another.but the internet also brings us troubles。internet use seems to cause a fall in psychological (心理的） health，according to research at carnegie mellon university.even people who spent just a few hours a week on the internet experienced more depressio

13、n and loneliness than those who logged on less often，the two。year study showed.and it wasnt that people who were already feeling bad spent more time on the internet,but that using the net actually seemed to cause the bad feelings。researchers are puzzled over the results，which were completely opposit

14、e to what they had expected.they expected that the net would prove socially healthier than television，since the net allows users to choose their information and to communicate with others。the fact that internet use reduces time used for family and friends may be the reason for the drop in health，res

15、earchers said。faceless,bodiless “virtual” （虚拟的） communication may be less psychologically satisfying than actual conversations，and the relationships formed through it may not be so deep.another possibility is that exposure to the wider world through the net makes users less satisfied with their live

16、s.“but its important to remember this is not about the technology；its about how it is used，” said one of the researchers.“it really points to the need for considering social factors （因素) when you design new inventions。”5the writer mainly wants to tell us that 。athe internet can bring people many adv

17、antagesbthe internet use may cause psychological problemscthe internet users are not satisfied with their lives dwe shouldnt use the internet解析：文章虽然谈论了网络的优点，但从其篇幅和重点来看，文章侧重于谈论由于使用网络而产生的一些问题,主题句在第四段。作者其实是想提醒我们使用网络可能有损心理健康。答案：b6why are the researchers puzzling over the results?abecause the results wer

18、e completely different from what they had thought.bbecause the net proved socially healthier than television。cbecause the internet users were all healthier。dbecause the internet users experienced less depression and loneliness。解析：researchers are puzzled over the results,which were completely opposit

19、e to what they had expected。从这句可知令研究人员疑惑的是研究结果与他们期盼的完全相反。答案：a7what may be the reasons why the internet use causes a fall in psychological health?ainternet use reduces time used for family and friends.bvirtual communication is less psychologically satisfying than actual conversations。cexposure to the

20、 wider world through the net makes users less satisfied with their lives.dall the above。解析：the fact that。.faceless，bodiless “virtual” communication may be less psychologically satisfying than actual conversations，and the relationships formed through it may not be so deep.another possibility is that

21、exposure to the wider world through the net makes users less satisfied with their lives。从这几句可知a、b、c都为原因。答案：d8what does the underlined part in the last paragraph mean？awhat matters is not the technology but how it is used。bthis passage is not about the technology but about how it is used。cwe should r

22、emember to learn about the technology.dwe should remember to learn how to use computers.解析：作者通过画线部分想表明这一切与技术本身无关，而是看我们怎么利用.答案：aclaptops and notebooks can be as fast and useful as your desktop pc。in fact，im typing this on my own 13。3 asus laptop at home。it has everything i might needa screen,a wirele

23、ss mouse and a wireless keyboard.when i bought mine，i went for a 13.3 inch laptop because i felt that at that size typing was still comfortable.i was right:it is.and its light enough to not bother my back too much。when youre buying your laptop,remember lighter is better.if you are going to buy a lap

24、top,you dont want to think about the weight only.you also need to think about battery life.personally im very happy to have bought one that came with 12 hours of battery life.of course its less in practice，especially when i am online or when it is attached to a screen。those two aspects are probably

25、the most important when youre buying your laptop.however，there are a few other things to consider。the newest and best laptops come with a dual core （双核） or even a quad core。theyre able to deal with two or even four tasks at the same time。thats the way processors （处理器) are made faster today：not by sp

26、eed (in hz），but by how much they can do at the same time.internal memory （内存） is also an issue.right now 4 gb is good enough for most uses (not if youre playing games of course）more will hardly be used by your laptop anyhow，as the software isnt equipped to deal with it yet.if you can afford it，a mac

27、 should be considered.lightweight apple laptops are the macbook air laptops.they dont just look great；theyre also lighter than most other small laptops out there。their 11。inch laptops and 13.inch laptops both weigh less than 3 pounds.语篇解读 我们在买笔记本电脑时应该考虑哪些因素来帮助我们选择一台合适的笔记本电脑呢？9according to the writer，we know that laptops and notebooks .aare not as useful as desktop pcsbare not as fast as desktop pcscare comfortable to type ondare not light enough for her解析：细节理解题.根据第二段的when i bought mine，i went for a 13。