英语：Chapter 4 Computer technology同步练习(无答案)(深圳牛津八年级上)
电子与通信专业英语Chapter Ⅳ Computer Technology
In personal computer systems, display screen and desktop printers are popular output devices. Larger and faster printers, many online workstations, and magnetic tape drives are commonly found in larger systems.
Devices that read data magnetically recorded on specially coated plastic tapes or flexible or floppy plastic disks [3] are popular. The keyboard of a workstation connected directly to … or ONLINE to … a computer is an example of a direct input device.[4]
OUTPUT DEVICES Like input units, output devices are instruments of interpretation and communication between humans and computer systems of all sizes.
This section explains why a computer is a system and how a computer system is organized.
Fig.4-1 shows the basic organization of a computer system. Key elements in this system include input, processing, and output devices. Let’s examine each component of the system in more detail.
八年级英语Lesson 4 Computers 同步练习3译林版
Lesson 4 puters 同步练习3借助字典，阅读以下短文，并完成文后练习。
Dick was a waiter in a small restaurant.One day a man came in and sat down at one of the tables.Dick greeted him and wanted to find out what he wanted to eat.The man said he would like some chicken with potatoes and other vegetables.“Roast chicken，”he added as Dick was leaving.“Very well，sir，”Dick answered and disappeared into the kitchen.But the man called him back，saying，“Just a moment，waiter.Please try to have it cooked just right not too little and not too much，and with a little fat as possible.”“Very well，sir，”answered Dick.“I’ll tell the cook.”Once more he began to go towards the kitchen，but again the man stopped him with the word，“Oh，and I forgot to explain that I’m fond of the leg.”“Very well，sir，”answered Dick.“Do you prefer the left leg，or the right?”Notes:1.roast to cook or to be cooked by dry heat，either in front of an open fire on in a hot box 烧，烤2.disappear to go out of sight 消失3.fond loving in a kind，gentle，tender way喜爱e.g.All of us are fond of sports.我们都爱运动。
计算机网络(第四版)课后习题(英文)+习题答案(中英文)
damaged is p, what is the mean number of transmissions required to send a frame? Assume that acknowledgements are never lost.(M) 假设某帧传到第 k 次才传输成功， 起初 k-1 次传输皆尝试失败， 概率为 pk-1 , 第 k 次传输成功，概率为(1-p) ，则发送一帧成功的平均传输次数为：
1. a.
Which of the OSI layers handles each of the following: (a) Dividing the transmitted bit stream into frames.
b. (b) Determining which route through the subnet to use.（E） 把传输的比特流划分为帧——数据链路层 决定使用哪条路径通过子网——网络层. 19. If the unit exchanged at the data link level is called a frame and the unit exchanged at the network level is called a packet, do frames encapsulate packets or do packets encapsulate frames? Explain your answer.（E） 帧封装包。 当一个包到达数据链路层时，整个数据包，包括包头、数据及全部内 容，都用作帧的数据区。或者说，将整个包放进一个信封(帧)里面，( 如果能装入的 话)。 21. List two ways in which the OSI reference model and the TCP/IP reference model are the same. Now list two ways in which they differ.（M） 相似点：都是独立的协议栈的概念；层的功能也大体相似。 不同点：OSI 更好的区分了服务、接口和协议的概念，因此比 TCP/IP 具有更好的 隐藏性，能够比较容易的进行替换；OSI 是先有的模型的概念，然后再进行协议的 实现， 而 TCP/IP 是先有协议， 然后建立描述该协议的模型； 层次数量有差别； TCP/IP 没有会话层和表示层，OSI 不支持网络互连。OSI 在网络层支持无连接和面向连接 的通信， 而在传输层仅有面向连接的通信， 而 TCP/IP 在网络层仅有一种通信模式 （无 连接），但在传输层支持两种模式。 22. What is the main difference between TCP and UDP?（E） TCP 是面向连接的，而 UDP 是一种数据报服务。
八年级英语Lesson 4 Computers 同步练习2译林版
Lesson 4 puters 同步练习2Ⅰ.听短文录音，回答下列问题1.Why do some people think puters are cleverer than Man?2.How long have engineers (工程师)worked on puters?3.Where has a puter e into wide use?4.What can today’s puters do?5.Are you afraid of puters if they are even cleverer?Why?Ⅱ.书面表达根据提示，写一篇有关计算机的文章。
1.计算机是最重要的发明之一，在很多方面得到使用。
2.起初的计算机又大又重，而现代计算机变得越来越小，而且能做很多工作。
3.计算机越来越普及，也许有一天能为你做所有的事。
字数：80词左右。
要求：语法正确，语意连贯。
Ⅲ.阅读理解Careful (细心)and careless(粗心)are as different as fire and water.But it is strange that quite a few scientists have both these qualities (品质).They’s both careful and careless.Newton，the famous English scientist，was a man like this.Once，Newton invited a friend to dinner at home.When they were ready to eat，Newton left to get a bottle of wine (酒).But after his friend had waited for a long time，Newton still didn’t e back.At last his friend found him in the lab (实验室).When Newton was going to get the wine he suddenly had a new idea for his experiment (实验).So he forgot his friend at the dinner.Another time，Newton was leading a horse up a mountain，and held the rein (缰绳)in his hand.While he was walking，he kept thinking about problems.When he got to the top of the mountain，he found that the rein was not in his hand and the horse was gone.Einstein was another example (陷入沉思).It started to rain.The rain kept on for some time.When he took out a piece of paper to write something down，the paper was wet and he knew that it wasraining.But after he put the paper into his pocket，he forgot he was in the rain again.1.When Newton and his friend were ready to eat，Newton _______.A.had a new idea for his experimentB.left to get some coffeeC.couldn’t find his way backD.left to get a bottle of wine2.Why was the horse gone when Newton got to the top of the mountain?A.He kept thinking about the problems and lost in the rain.B.He was not friendly with the horse.C.He didn’t walk fast enough.D.The horse lost its way (迷路).3.Which of the following is true?A.Einstein kept thinking in the rain.B.Einstein stopped thinking because of the rain.C.Einstein would like to wait for his friend in the rain.D.The rain helped Einstein keep thinking.4.Newton and Einstein were careless about their _______ and careful in their _______.A.experiments;testsB.life;studiesC.studies;lifeD.work;life5._______scientists are both careful and careless like Newton and Einstein.A.No otherB.Very few参考答案Ⅰ.听力材料The puter works fast and never makes a mistake.But people are too slow and full of mistakes.That’s why some people think puters are cleverer than man.People have made better and betterputers.Engineers have worked on them for over twenty-five year’s puters can draw pictures，write music，talk and play games with people.Many scientists are now thinking of making the puter think like a man.Perhaps puters will one day really think and feel.They are too clever，and they can’t listen to and serve the people.Do you think people will be afraid?Ⅱ.〔1~5(略)〕Ⅲ.1~5 DAABB。
八年级英语上册 Chapter 4 Computer technology学案(无答案)牛津深圳版
Chapter 4 Computer Technology语言学习目标：一、本章需要掌握的重点词语。
1.drive2.monitor3.speaker4.keyboard5.mouse6.type7.control8.hide9.tiny 10.realize 11.print 12.operate 13.railway 14.judge 15.raise 16.supply 17. order pany 19.price 20.opinion 21.modern 22. medium 23. disagree 24. hot 25. smooth 26. speed 27.distance二、重点词组1. hardly ever2. be unaware of3. for the time being4. control the computer5. in the world6. at the moment7. more importantly 8. for these reasons 9. the answer to this question 10. change one’s life11. have nothing to do 12. be better at doing sth三、重点句子。
1. Not so many years ago, you hardly ever saw computers.2. There are also many tiny, hidden computers in your home, but you might be unaware of them.3. They are faster at calculating than people.4. They can teach you many things and also play games with you.5. More importantly, they can operate railways and fly planes and spaceships.6. The answer to this question is, for the time being, “No”.7. They may even be better at doing their jobs than doctors, judges and teachers.8. This raises interesting questions.9. How will computer change our lives?10. Will computers make our lives better or worse in the future?四、背诵段落What kind of jobs can a computer do?五、解释句子1. Not so many years ago, you hardly ever saw computers.---Not so many years ago, you seldom saw computers.2. Now they seem to be everywhere.--- Today they seem to be here and there.3. There are also many tiny, hidden computers in your home, but you might be unaware of them.--- There are also many small, hidden computers in your home, but you might not know about them.六、日常交际用语1. In my opinion, Sichuan food is better.2. I agree.用心爱心专心- 1 -。
Unit 4 Computer facts知识点及练习题
Chapter 2Computer一．基础篇（一）核心单词1．important a. 重要的importance n. 重要性2．necessary a. 必要的need v. aux. 必须3．happy a. 快乐的，幸福的happily adv. 幸福地4．plan—planned，v. 计划plan n. 计划5．hide (hid, hidden) V. 隐藏6．break (broke, broken) V. 打破，违犯freeze (froze, frozen) V. 使结冰，使冷冻7．calculator n. 计算器8．operate v. 动手术How do you operate this new machine ?operation n.手术9．electric a. 电的electric light 电灯electricity n. 电electronic adj. 电子的10．weigh v. 称……的重量weigh sth for sb.The watch weighs 0.45 kg.weight n. 重量11．agree v. 同意12.What does Joyce think of Sichuan food? 觉得……怎么样？--- How does Joyce like Sichuan food?比较：What does the thief look like? 某人长什么样？How does the thief look?13.taste n. 味道，味觉taste v. 品尝The dish tastes good.He tasted the dish and found it was quite tasty.14. copy n. . 副本，拷贝v. 抄写a copy of the questions ；a copy of Shanghai Students’ PostI copied the text twice yesterday.15.history n. 历史historical adj. 历史的16.develop v. 发展development n.17.difficult a.困难的difficulty n. 困难18.businessman n.. 女商人businesswoman n. 男商人busy a. 忙的business n. 生意business hours / letters19. possible a. 可能的impossible a.不可能的possibly adv. 可能地20.like v. 喜欢dislike v. 不喜欢21.honest a. 诚实的honesty n. 诚实dishonest a. 不诚实的22.length n. 长度long a. 长的height n. 高度high a. 高的weight n. 重量wide a. 宽的，宽阔的23. mouse n. 老鼠鼠标24. knowledge n. 知识know v. 知道，认识25. type n.类型v. 打字26．print v. 打印印刷27．judge n. 法官v. 判断审判28．thus adv. 如此；这样；因而29.几组反意词fast --- slow, high --- low, heavy --- light, flat --- rough（二）词组1. plan to do sth. 计划做某事I plan to study abroad next year.(v.)2. operate on sb. 为某人开刀3. give a computer instructions by putting a program into it.通过往计算机中输入程序来给计算机指令by doing sth 通过干。
上海牛津英语9A-Unit 4 Computers - Exercise 2 - 同步练习-附答案
9AU4 Exercise 2I. Choose the best answer. (选择最恰当的答案)( ) 1. Nowadays, the price of computers are _____________ than before.A. smallerB. shorterC. lowerD. cheaper( ) 2. Is there ______________ in today’s newspaper?A. anything importantB. something importantC. important anythingD. important something( ) 3. Can you tell the difference _______________ the twins?A. forB. withC. betweenD. among( ) 4. The shop is welcomed by customers ______________ its good service.A. becauseB. because ofC. asD. since( ) 5. Look! The birds are flying _____________.A. more and more highB. higher and higherC. much more highD. much higher and much higher( ) 6. Mr. Smith is ______________ the culture of England.A. interested inB. interested onC. interesting inD. interesting on( ) 7. He _______________ riding to school every day now.A. used toB. use toC. was used toD. is used to( ) 8. Peter has waited for Lisa for about ______________.A. a hourB. one and a half hourC. a half hourD. an hour and a half( ) 9. She has three sons, one is a doctor, ______________ are workers.A. the otherB. anotherC. the other twoD. others( )10. Children are not allowed to enter bars _______________ they are sixteen years old.A. whenB. afterC. untilD. while( ) 11. We _______________ for Mr. Ward at the airport for three hours.A. waitedB. waitingC. are waitingD. have waited( ) 12. Nothing can make him _______________ his mind.A. changeB. changesC. changedD. to change( ) 13. My grandmother is retired, but he still works as _______________ a young man.A. harder asB. harder thanC. hard asD. more hard than( ) 14. Tom is very good at _______________ stories in English.A. talkingB. tellingC. sayingD. speaking( ) 15. Work hard, _______________ you’ll pass the exam easily.A. andB. orC. becauseD. unless( )16. The young man wondered how to repair the digital camera.A. /'wʊndəd/B. /'wʌndəd/C. /'wəndəd/D. /'wu:ndəd/( )17.Which of the following underlined parts is different in pronunciation with others?A. The children are chasing one another among the bushes.B. Bake the bread in a hot oven for 45 minutes.C. The pickpocket relieved the fat passenger of all his money.D. If you upend the box it will take less spaceII. Complete the sentences with the given words in their proper forms. (用括号中所给单词的适当形式填空，每空限填一词)1. We all felt __________ when we heard the bad news. (surprise)2. All of them enjoyed __________ when they had the barbecue. (they)3. A scientist gave us a __________ on how to protect the environment. (speak)4. Before having medicine, we should read __________ carefully. (instruct)5. He is an __________ man who lives alone. (old)6. The __________ of this machine is very simple, so we can learn how to run it. (operate)7. Don’t play with fire. It's __________. (danger)8. Computers may be __________ than doctors, judges and teachers at doing their jobs. (good)9. This pair of shoes doesn’t fit me. May I try on __________ pair? (other)10. “Can I help you?” the waiter asked __________. (polite)III. Rewrite the following sentences as required. (根据要求改写句子，每空一词)1. The new bike cost him four hundred yuan. (改为否定句)The new bike __________ __________ him four hundred yuan.2. We often call computers electric brains. (对划线部分提问)__________ __________we call computer?3. Computers can calculate very fast. (改为感叹句)__________ __________computers can calculate!4. Perhaps computers can do most things instead of people. (保持句意基本不变)Perhaps computers are __________ __________ do most things instead of people.5. He can run 100 meters in 9 seconds. (对划线部分提问)__________ __________ can he run?6. Bob is the tallest student in my class. (保持句意基本不变)__________ __________ is taller than Bob in my class.7. It hardly snows in Shanghai. (改为反意疑问句)It hardly snows in Shanghai, __________ __________?8. Simon plays both tennis and football. (保持句意基本不变)Simon plays not only tennis but football __________ __________.9. Smoking is bad for people’s health. (保持句意基本不变)Smoking is __________ __________ people’s health.10. We will water the flowers when you are away. (改为被动语态)The flowers will __________ __________when you are away.11.rarely, in England, people, eat snakes.(连词成句)_______________________________________________参考答案9AU4 E2I. CACBB ADDCC DACBA BCII. 1. surprised 2. themselves 3. speech 4. instructions5. elderly6. operation7. dangerous8. better9. another10. politelyIII. 1. didn’t cost 2. what do 3. How fast 4. able to 5. How fast 6. Nobody else 7. does it 8. as well 9. harmful to 10. be watered11. People rarely eat snakes in England.。
八年级上册 Chapter4 Computer technology
八年级上册Chapter4 Computer technology一．选择题1．Sea water _______ salt.A. includeB. containsC. contain2. The boy is ________ naughty _________ clever.A. as, asB. so, thatC. more, than3. ________ we are clever than computers.A. For a momentB. In a momentC. At the moment4. We want to know what will __________ our lives in the future.A. happen onB. happenC. happen to5. _________, there are six other students.A. In addition toB. In additionC. expect for6._______ students often ask me to assist them.A. OthersB. The otherC. The others7. Her driver always takes her ________ after school.A. to homeB. at homeC. home8. He has______ eaten dumplings, has he?A. neverB. justC. yet9. My uncle has jut bought a house_________ just 40 sqm.A. withB. ofC. in10. Whom has the book ________?A. wroteB. writtenC. written by11.Canada is the second ______ country in the world.A. largeB. largerC. largest12. He make the ________ mistakes in the dictation exercises.A. leastB. fewerC. fewest13. Which is _______country, China or Australia?A. a largerB. largerC. a large14. Which do you think tastes________, the chicken or the fish?A. wellB. goodC. better15. ---If you don‟t like the red coat, take the blue one.---- Ok, but you have ________ size in the blue? This one is a bit tight for me.A. a bigB. a biggerC. the bigger16. John has three sisters. Marry is the-________ of the three.A. most cleverB. more cleverC. cleverest17. Tom‟s home is far from school. Jack‟ s is _______ than Tom‟s.A. farB. more farC. farther18. It takes a long time to go there by train. It‟s ________by road.A. quickerB. much quickC. more quick19. How beautifully she sings! I have never heard ________.A. a better voice B . a good voice C. the best voice20. The experiment was ________ easier than we had expected.A. moreB. much moreC. much21.I found _______ difficult to learn English grammar.A. itB. thatC. this22. --________ do you have an English party?---- Once a monthA. How farB. How oftenC. How long23. He didn‟t study hard, so he was afraid________ in the exam.A. failB. to failC. failing24. Can you learn English ________ chatting on the Internet?A. withB. byC. for25. Jerry has a good ______, and sings well.A. voiceB. soundC. talk26. My brother is ________ young _______ to school.A. too, can‟t goB. too, to goC. so, not to27. If you want to learn English well , you should practice _______English.A. speakB. to speakC. speaking28. It took the workers half a year________ the high building.A. buildsB. to buildC. building29. Mr. Wang is our head teacher and I am afraid of_________A. heB. himC. his30.Have you heard such__________ news before?A. an excitingB. excitingC. an excited二．用所给动词的适当形式填空。
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Chapter 4 Computer technologyA 根据句意补全单词，注意单词的形式。
（每个一分，10%）1. Tony c______________ some of the information about computer.2. Computers can do t______________ according to the programs.3. The mouse helps you c_______________ the computer.4．The m____________ shows words and pictures.5. We can hear the sound from the s______________.6. One of my cousins is an ATM m____________.7. You are more d____________ on computers than you realize.8. No one knows how to o____________ this new machine.9. She has a t__________ cat.10. How do we give a computer i_________________.B 找出与意思相同或相近的词或词组（每题一分，5%）（）11. hardly ever A. people who make legal decisions（）12. judges B. seldom（）13. tiny C. very necessary（）14. for the time being D. very small（）15. essential E. at present二．完成句子( 每题1.5分，15%)16. 更重要的是，他能帮你做饭。
__________ _________，he can help you to cook rice.17. 根据Sam 所说的，他们是来自北京大学的学生。
___________ ____________ what Sam said, they are students from Beijing University.18. 目前，我们需要更多的人做志愿者。
_______________ ______________ we need more people to be volunteers.19. 我们能够使我们的生活更加美好。
We are able to make our _________ ___________.20. 在我看来，我们可以通过阅读更多的英语书来提高我们的英语。
In __________ _________，we can improve our English by reading more English books. 三．单项选择（每题一分，15%）( ) 21. _______ these reasons, you should finish this task on time.A. ForB. ToC. AboutD. Since( ) 22. ----Can you find the answer ______ the question? -----Yes, it’s too easy.A. toB. forC. withD. of( ) 23. Many people are unaware _______ the danger of polluting our environment.A. aboutB. ofC. withD. to( ) 24. He is ______ than you. A. thin B. thinner C. the thinner D. more thin ( ) 25. It’s essential for us not _________ talk loudly in the library.A. forB. ofC. toD. with( ) 26 I don’t think my English is good enough. I want to learn__________.A. muchB. lessC. moreD. many( ) 27. Beijing may be _______ city in China.A. the famousB. famousC. the most famousD. more famous( ) 28. I can speak English, ______ I can’t write it well.A. orB. butC. andD. so( ) 29. Which is the ______, Earth, the moon or the sun?A bigger B. most big C. more bigger D. biggest( ) 30. What’s your opinion about ________ swimming?A. to goB. goingC. to go toD. go( ) 31. He ___________ play the piano when he was only a little child.A. canB. wouldC. was able toD. ought to( ) 32. You must be quick. We are ______ time.A. withoutB. out fromC. in needD. short of( ) 33. ---- Would you please _____ out of the bathroom? ---- Sorry. I won’t be long.A. getB. gettingC. to getD. got( ) 34. David is planning ________ a party on Saturday.A. haveB. havingC. to haveD. to having( ) 35. My brother ________ out yesterday evening.A. isB. areC. wasD. were四．完形填空（每空一分，10%）John lived with his mother in a very big house, and when she died, the house became____ (36) big for him. So he bought a ____ (37) one in the next street. There was a very nice old ____(38) in his first house, and when the men came to take his furniture（家具）____(39) the new house, John thought, “I’m not going to let them_____(40) my beautiful old clock in their truck. Maybe they’ll break it, and_____ (41)it will be expensive.”So he picked it up and began to carry___(42) down the road in his arms.It was heavy, so he stopped two or three times____ (43) a rest.Then suddenly a small boy came along the road. He____ (44) and looked at John for a few____ (45). Then he said, “You’re a foolish(愚蠢的) man, aren’t you? Why don’t you buy a watch like everyone else?”( ) 36. A. too B. very C. rather D. quite( ) 37. A. better B. worse C. smaller D. larger( ) 38. A. table B. clock C. chair D. bed( ) 39. A. form B. to C. at D. in( ) 40. A. take B. bring C. lift D. carry( ) 41.A. mending B. sending C. carrying D. them( ) 42. A. this B. that C. it D. them( ) 43. A. having B. to have C. have D. and have( ) 44. A. ran B. jumped C. cried D. stopped( ) 45. A. minutes B. hours C. days D. weeks五阅读理解（每题2分，20%）A 根据短文内容，判断以下句子的正误（正确A，错误B）In some foreign countries, some people don’t like the number13. They don’t think it is a lucky number. For example, they don’t like to live on the thirteen floor. My friend Jack has got the same idea. He d oesn’t like the number13, either. One day, he asked some friends to dinner. When all of his friends arrived, he asked them to sit around the dinner table. He began to count the people when they were having the delicious food. Suddenly he cried out. “Oh , there are thirteen people here!” Everybody’s fac e turned white except Mr. Brown. He said with a smile on his face,”Don’t worry, my dear friends! We have fourteen people here. My wife will have a baby, she is in the family way(怀孕) now.”All of them were happy again. They enjoyed the nice and had a good time that evening.( ) 46. Most people in the world don’t like the number 13.( ) 47. They don’t like to live on the thirteen floor because it is too high.( ) 48. Jack asked 13 friends to dinner one day.( ) 49. Mrs. Brown will have a baby.( ) 50. They all have a good time that evening.B. 选择最佳答案Father is always busy with his work. He knows nothing about housework. He never eats if no onecooks for him.One day mother was ill in bed. Father had to cook himself. First he had to go shopping. But he didn’t know what to buy. So mother wrote all these things on a piece of paper:1. cake2. egg3. tomato4. fish5. milk6. salt7. chickenFather went out with that piece of paper in his hand. Half an hour later, he came back home with a big smile on his face. He brought out all the things.One cake, two eggs, three tomatoes, four fish, five bottles of milk, six bags of salt and seven fat chickens. Mother was too surprised to say a word.（）51.Father does little housework because_________.A. mother works very hardB. he is very busy with his workC. he dislikes itD. he never stays at home（）52. Father never eats___________.A. if he doesn’t know how to cookB. if meals are ready.C. if he comes home lateD. if no one cooks for him（）53. One day mother was ill, father had to ___________.A. buy something for herB. help himselfC. eat in his officeD. get ready for meals( ) 54. That day mother wanted father to buy_________.A. seven chickensB. seven kinds of foodC. seven bags of thingsD. seven shopping-bags( ) 55. Mother was so surprised because____________.A. Father got everything homeB. Mother didn’t like to eat all the foodC. Father didn’t understand her at allD. Father bought nothing necessary(必要的)六．完成对话（每题1.5分，10%）A. 根据对话内容，从A-G的选项中选出适当的选项补全对话。