大学英语B(三)成人,平时作业2020华南理工大学网络教育答案
网络营销·随堂练习2020秋华南理工大学网络教育答案
网络营销，随堂练习第1章网络营销概述1.(单选题) 网络营销广告（）年发源于美国。
A) 1989 B)1994 C)1997 D)2000答题： A. B. C. D. （已提交）参考答案：B问题解析：2.(单选题) 网络营销产生的现实基础是（）竞争的日益激烈化。
A)商业 B)人才 C)国家 D)实力答题： A. B. C. D. （已提交）参考答案：A问题解析：3.(单选题) 网络营销概念的提出是在（）A) 20世纪60年代 B) 20世纪70年代 C) 20世纪80年代 D) 20世纪90年代答题： A. B. C. D. （已提交）参考答案：D问题解析：4.(单选题) 网络营销对传统营销策略带来的巨大冲击，下列表述错误的是（）A) 对非标准化产品的冲击 B) 对品牌全球化管理的冲击C) 对定价策略的冲击 D) 对传统广告障碍的消除答题： A. B. C. D. （已提交）参考答案：A问题解析：5.(单选题) 下列选项中对网络营销的发展趋势表述错误的是（）A) 网络媒体和网络技术将更有利于产品的销售 B) 营销决策趋于非理性化C) 网上的电子商场和网店将兴旺发达 D) 网络广告将大有作为答题： A. B. C. D. （已提交）A. B. C.A. B. C. ..A. B. C.问题解析：2.(单选题) 一个完整的网络交易安全体系，至少要包括（）三类控制措施，才能真正实现电子商务的安全运作。
A.技术方面措施、管理措施和社会的法律政策与保障B.技术方面措施、管理措施和身份认证C.交易安全的实施监控措施、客户认证和社会的法律政策与保障D.技术方面措施、交易安全的实施监控措施和社会的法律政策与保障答题： A. B. C. D. （已提交）参考答案：A问题解析：3.(单选题) 以下（）不是网络营销的宏观环境。
A.政治环境B.经济环境C.技术环境D.供货商答题： A. B. C. D. （已提交）参考答案：D问题解析：4.(单选题) 关于网络营销和传统营销的说法准确的是（）。
华南理工大学英语B第三次作业答案
A. B. D.The high quality and reasonable price make the customers have strongA. B. D.More practice can help you to get ________ of your shyness in public.A. B. D.To forget is natural ________; to remember is unnatural and requireA. B. D.A. B. D.There is no reason for an able man to ________ himself that he can’tA. B. D.Erase the negative notion and adopt a ________ spirit, and you gainA. B. D.________ makes success a certainty, while inconstancy often resultsA. B. D.Unit TwoA. B. D.Life without passion would be ________.A. B. D.We are supposed to ________ nothing but dreams.A. B. D.Many people felt ________ to help the victims after being told theA. B. D.In the U.S., there are some limits on what you can ask or expectA. B. D.The sex discrimination goes ________ the principle of equality.A. B. D.Really friendly people respect everyone ________.A. B. D.Unit ThreeA. B. D.Your lack of interest in English may ________ against you in theA. B. D.We are ________ of our gestures and body movements 99% of time.A. B. D.Body language sometimes helps make the communication easy andA. B. D.Observation shows that a truly bilingual person switches his bodyA. B. D.Teaching young children is a big ________.A. B. D.The boss insisted that he ________all the work before dinner.A. B. D.The use of gesture can ________ our verbal communication.A. B. D.Unit FourA. B. D.________ I am, it’s useful to know foreign languages(不管你从事什A. B. D.Did the TV film Li Xiao-long ________ your expectation?A. B. D.Many a wife ________ a sports fan after retirement.A. B. D.Gail was lying in the sun, ________ and happy.A. B. D.Sports in America ________ the international heritage of the peopleA. B. D.Playing table tennis is what I do at times ________ I am not workingA. B. D.。
《大学英语2》模拟题B答案
华南理工大学网络教育学院2010-2011学年度第一学期期末考试《大学英语2》模拟题（B卷）I. Use of English (10%)Directions: In this part there are 5 incomplete dialogs. For each dialog there are 4 choices marked A), B), C), and D). Choose the ONE answer that best completes each dialog.1. —There’s something I’d like to talk to you about, Mr. Smith. ____ B_______.— Yes, would Thursday morning at 10 suit youA) Please come to my office .B) Could you come to my office sometime this weekC) Can you phone me D) Would you like to have dinner with us this evening2. — Oh, welcome! B_____________.— We are sorry for being late. You know, there was a lot of traffic in the street this evening.A) Thanks for your present. B) I’m glad you could come.C) I’ve be en waiting for you all evening. D) Why not come early3. —It’s a great pl easure to have a talk with you.— ___B___________.A) It’s very good of you to say so.B) You are welcome.C) See you.D) It can’t be true.4. —What’s the matter with you, Jim You look pale.— ____B__________.A) Oh, it is well. B) I feel awful today. I d idn’t get any sleep last night.C) Yes, but I don’t care. D) It has nothing to do with you.5. — ______B________.—Oh, please don’t.A) I think you’d better cut down your smoking. B) Would you mind if I smoke hereC) You smoke like a chimney. Smoking might kill you. D) I like smoking.II. Multiple-Choices (10 points)Directions:In each of the following sentences, there are 4 choices marked A), B), C), and D). Choose the ONE answer that best completes each sentence.1. How can I get it ____B__ to him that this is really importantA) over B) through C) up D) on2. The famous author spent half of his life __B____ this novel.A) to write B) writing C) on write D) on writing3. It took Mike a couple of days to ___D___ out what had happened.A) work B) get C) take D) figure4. Teaching materials _A_____ greatly from school to school in the United States.A) vary B) various C) variety D) different5. Police __C____that there may be further terrorist attacks.A) fearless B) fearful C) fear D) afraid6. The girl I met yesterday __B____ to be one of my sister’s old friends.A) turns off B) turns out C) turn on D) turn over7. The old in the country __D____ taken good care of.A) has B) have C) is D) are8. Anybody will do, __C___ they are responsible for that.A) so far as B) as far as C) as long as D) as soon as9. One of the computers is broken and he’s blaming it ___A___ me.A) on B) to C) for D) at10. — ____D__.—I’m not sure what I’ll do. I hope to watch TV and enjoy myself.A) Will you go on a picnic with us tomorrow B) I have a lot of things to do during the summer break.C) Will you go with us to visit the Great Wall D) What are you going to do during the summer breakIII. Cloze Test (10 points)Directions: There are 10 blanks in the following passage. For each blank there are 4 choices marked A), B), C) and D). Choose the ONE answer that best completes each sentence.Research has found that compulsive spending is more common than previously thought. It is 1. __A______ that in the U.S. alone, about 20 million people suffer from an 2. ____B____ urge to spend, risking their jobs, marriages, families, and finances. The truth is, they would rather shop than 3. __D______ anything else.What is at the 4. _B_______ of the problem 5. ___A_____ to psychiatry (精神病学) professor Donald Black, “Sometimes it is a very pleasurable impulse, and people act on those impulses. Other times, bottled-up anger is the trigger, and shopping is a way of 6. _____A___ the anger.”While 90% of obsessive shoppers are 7. __D______, Black also points 8. ____A____ that many men have the addiction. Male shopaholics (购物狂) are often 9. ______C__ of as “collectors”, buying things like hardware, electronics, and C Ds. Women 10. ____C____ to buy lots of cheaper clothes, along with shoes, jewelry, and make-up.1. A) estimated B) estimates C) estimating D) estimation2. A) controllable B) uncontrollable C) uncountable D) countable3. A) did B) doing C) done D) do4. A) end B) root C) base D) result5. A) According B) Due C) Owing D) Considering6. A) tackle B) destroy C) handling D) dealing7. A) children B) men C) youth D) women8. A) out B) to C) in D) up9. A) supposed B) considered C) thought D) viewed10. A) intend B) attend C) tend D) leanedIV. Reading Comprehension (40 points)Directions: There are 4 passages in this part. Each passage is followed by 5 questions. For each question there are 4 choices marked A), B), C), and D). Choose the ONE answer that best completes each sentence.Passage 11 Vitamins are a group of substances found in food. The body needs them for life and health. So naturally, many people are concerned with the question: Am I getting enough vitamins, and am I getting the right kind2 Even though very small amounts of each vitamin are enough for the needs of the body, that many people have not enough vitamins has some basis. And this has something to do with their diet — the food they take in. A person eating a good variety of foods gets all the vitamins now known to be needed with the possible exception of vitamin D. The problem is that there are many people who don’t choose foods wisely, don’t get enough variety, and don’t eat the basic foods they need to get their v itamins. So the answer to this question is: No extra vitamins are needed, if you eat proper food. In fact, many of the vitamins can not be stored in the body, so when extra vitamins are taken in, the body simply gets rid of them. It is even harmful to put too much of certain vitamins into the body. This has been found to be true of vitamin A and D, when large amounts are taken in.3 What foods supply what vitamins Here is a general idea. Vitamin A, for the health of the eyes, skin, teeth, and bones, is found in green vegetables, fruits, eggs, liver and butter. Vitamin B1 which helps the nervous and digestive systems and prevents certain diseases, is found in cereals, pork and liver. Vitamin B2 is found in milk, eggs, green vegetables and meats. Vitamin C, which helps bones and teeth, is found in tomatoes, certainfruits and vegetables. These are only a few of the most important vitamins the body needs.1. Our body needs ___A___ for life and health.A) small amounts of each vitamin B) extra vitaminsC) all vitamins except vitamin D D) large amounts of certain vitamins2. C Vitamin A is needed by___C_ and can be found in ______.A) bones, pork B) nervous system, milkC) eyes, green vegetables D) teeth, meats3. A Vitamin B1 is very important to __A____.A) the digestive system B) bones C) liver D) skin4. What will be the result if you take more vitamins than you really need DA) They will do great harm to our body. B) We get all the vitamins needed.C) Our body will function more properly. D) Our body simply gets rid of them.5. The passage has probably been taken from _B_____.A) a sports magazine B) a journal of medical scienceC) an aged magazine D) a youth journalPassage Two1 Many centuries ago, a group of Jews (犹太人) landed in India and immediately went to the king. They told him that they were lost and wanted to settle in his kingdom.2 In those days any foreigner was viewed with suspicion (怀疑), so the king was hesitant about letting them in. He sent for one glass of milk and one glass of water. He asked the leader of the Jews to taste the milk. Then he poured out some milk and added some water. He asked the leader to taste the milk again and said, “What is the difference in taste”3The leader said, “The second time the milk tastes terrible.” “That is because of the water added to the milk,” said the king.“The water dilutes the milk and spoils its taste. So too your addition (加入) will s poil the kingdom.” The leader of the Jews thought for a moment and asked for another glass of milk. He then added sugar to the milk and asked the king to taste it. “It tastes sweet,” said the king.4The leader of the Jews bowed his head and said, “Oh, ki ng！That is how we would like to live here：as the small amount of sugar which sweetens the large quantity of milk and not as the water which dilutes the milk.” Pleased with him the king granted them perm ission to stay.6. The leader of the Jews went to the king because ___C_____ for life and health.A) they wanted to ask directions B) they wanted to drink some milk C) they wanted to live there D) they wanted to go through the kingdom7. Why was the king hesitant AA) Because he was suspicious of the foreigners.B) Because in those days any foreigner was viewed as a bad guy.C) Because he thought the Jews would rob them of their milk.D) Because Jews were not trusty.8. The king asked the leader of the Jews to taste the milk added with water just to show that __B______.A) the taste was terrible B) if the Jews joined them, they would destroy the countryC) the taste was different from the pure milk D) the taste was sweet9. The underlined word “dilutes” means _____D___.A) reduce B) weaken C) make less delicious D) make (a liquid) thinner by adding another liquid such as water10. The passage implies that the leader of the Jews was ____B____.A) humorous B) witty C) foolish D) unbelievablePassage Three1 Is it difficult for you to get up in the morning Do you sometimes oversleep Are you often late for work or school Yes Then Hiroyuki Sugiyama of Japan has a special bed for you. Hiroyuki’s bed will get you up in the morning! Here is how it works:2 The bed is connected to an alarm clock. First, the alarm clock rings. You have a few minutes to wake up. Next, a tape recorder in the bed plays soft music or other pleasant sounds. A few minutes later, a second recording plays. The second recording can be loud music or unpleasant sounds. If you don’t get up after the second recording, you’ll be sorry. A mechanical “foot” is in the bed. The mechanical foot kicks yo u in the head. Then the bed waits a few more minutes. What! You’re still in bed! Slowly, the top of the bed rises hi gher and higher. The foot of the bed goes lower and lower. Finally, the bed is vertical. You slide off the bed and onto the floor. You are awake and out of bed.3 Hiroyuki made his bed because he wanted to win a contest. He works for Honda Motor Company. Once every two years, Honda has a contest—the “All Honda Idea Contest”. In 1996 Hiroyuki won a prize for his bed.11. The purpose of the passage is ____A____.A) to introduce a special bed B) to tell a storyC) to wake somebody up D) to praise Hiroyuki12. What does the special bed do first in the morning DA) Its tape recorder plays soft music. B) Its tape recorder plays loud music. C) It kicks you in the head. D) Its alarm clock rings.13. If you don’t wake up after the clock rings, what will ha ppen CA) The mechanica l “foot” kicks you in the head. B) The bed becomes vertical and you slide off the bed.C) The tape recorder plays pleasant sounds. D) You will be late for work.14. Why did Hiroyuki make such a special bed AA) Because he wanted to win the contest held by his company. B) Because he was good at inventing new things.C) Because he wanted to make money. D) Because he sometimes overslept.15. Who is Hiroyuki BA) A scientist. B) A company worker. C) An inventor. D) A carpenter.Passage 41 Each of us fails from time to time. If we are wise, we accept these failures as a necessary part of the learning process. But all too often as parents and teachers we deny this same right to our children. We tell them that failure is something to be ashamed of, that nothing but top performance will meet with our approval.2 When I see a child subject to this kind of pressure, I think of Donnie, my youngest third-grader，he was a shy, nervous perfectionist. His fear of failure kept him from classroom games that other children played with joyous abandon. He seldom answered questions — he might be wrong. Written assignments, especially math, reduced him to nail-biting frustration. He seldom finished his work because he repeatedly checked with me to be sure he hadn't made a mistake3 I tried my best to build his self-confidence. But nothing changed until midterm, when Mary Anne, a student teacher, was assigned to our classroom. She was young and pretty, and she loved children. My pupils, Donnie included, adored her. But even enthusiastic, loving Mary was baffled by this little boy who feared of making mistake.4 Then one morning we were working math problems at the blackboard. Donnie had copied the problems with painstaking neatness and filled in answers for the first row. Pleased with his progress, I left the children with Mary Anne and went for art materials. When I returned, Donnie was in tears. He'd missed the third problem.5 Mary looked at me in despair. Suddenly her face brightened. From the desk we shared, she got a canister of pencils.6“Look, Donnie,” she said, kneeling beside him and gently lifting the tear-stained face from his arms. She placed the pencils on his desk. “See these pencils, Donnie” she continued. “They belong to Mrs. Lindstrom and me. See how the erasers are worn That's because we make mistakes too, lots of them. But we erase the mistakes and try again. That’s what you must learn to do, too.”7She kissed him and stood up. “Here,” she said, “I’ll leave one pencil to you so you’ll remember that everybody makes mistakes, even teachers.” Donnie looked up with love in his eyes and just a glimmer of a smile.8The pencil became Donnie’s prize. That, together with Mary Anne’s frequent encouragement and unfailing praise for even Donnie’s small successes, gradually persuaded him that it’s all right to make mistakes — as long as you erase them and try again.16. In the author’s opinion, we should consider failures _C_______.A) a shame可耻的 B) mistakes错误的 C) acceptable可接受的 D) accessible方便的17. Donnie is a perfectionist, which means he __A______.A) cannot afford any mistakes B) often makes mistakes C) is always perfect D) seldom makes any mistakes18. Mary Anne was puzzled by Donnie because __D______.A) he bit his nails B) he adored her C) he made mistakes in math problems D) his fear of making mistakes19. Mary changed Donnie after ___A_____.A) giving him a pencil B) kneeling beside him and lifting his face from his armsC) persuading hi m that it’s ok to make mistakes D) erasing his mistakes20. This article tells us that __D______.A) the influence of a teacher is important to a student老师的影响是重要的一个学生B) there are growing pains in a student’s life这是一个学生的生命成长的烦恼C) you should erase your mistakes and try again你应该删除你的错误并再次尝试D) making mistakes is not such a big deal, as long as you try again 犯错并不是什么大不了的，只要你再试试。
网络教育机考《大学英语B（二）》模拟题
⽹络教育机考《⼤学英语B（⼆）》模拟题华南理⼯⼤学⽹络教育学院《⼤学英语B（⼆）》机考模拟题I. Vocabulary and structure (20 points)Directions: There are 20 sentences in this part. For each sentence there are four choices marked A, B, C and D. Decide the ONE answer that best completes the sentence or best replaces the underlined words.◎题型：单选题1. The repair is difficult, but I can it.A. makeB. doC. dealD. manage2. Everybody should know it, as it is sense.A. commercialB. commonC. cheerfulD. original3. The new factory is expected to ________ more than 400 new jobs.A. employB. createC. hireD. open4. The sun gives off light and warmth, _________ is very important to the living things on theearth.A. thatB. whichC. whatD. where5. I will buy this skirt _______.A. any wayB. anywayC. in anyhowD. any how6. The learner had trouble __________ what he said.A. understoodB. to understandC. understandingD. understand7. We'll never finish this meeting if people don't ______ to the point.A. approachB. insistC. reachD. stick8. I _____ you had returned the book yesterday.A. wantB. would ratherC. likedD. had better9. According to the forecast, a ____________ cold air is coming in three days.A. massesB. mashC. maskD. mass10. Unless a compromise could be reached the country would be diplomatically on this issue.A. isolationB. isolatedC. isolatingD. isolatable11. The cultural life in our city has become much more colorful and ________.A. plentyB. variousC. numerousD. abundant12. The floods did not start to until two days after the rain had stopped.A. retireB. recedeC. retreatD. sink13. We agreed to accept ______________ they thought was the best tourist guide.A. whateverB. whomeverC. whicheverD. whoever14. The medicine is on sale everywhere. You can get it at chemist's.A. eachB. someC. certainD. any15. ______ what to do, he went to the manager for help.A. Not to knowB. Not knowingC. Not having knownD. Having not known16. We moved to the town ______ we could go to see our parents often.A. even ifB. in caseC. so thatD. as if17. Helen was much kinder to her youngest child than she was to the others, of course, made the others jealous.A. whoB. whatC. thatD. which18. I wish I ______ to the movies with you last night.A. have goneB. could goC. could have goneD. went19. Oh, I ______ you a message when you came back.A. leftB. was leavingC. have leftD. was about to leave20. I'd rather you anything about the accident for the time being.A. sayB. didn't sayC. don't sayD. not sayII. Reading comprehension (40 points)Directions:There are 4 passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice.◎题型:材料题Passage 1In today's world English is the most widely used language. It is our duty to learn English in the new situation of the reform (改⾰) and open to the outside world. Can we master the English language? In order to master it, I'd like to give you some good advice.First, I think interest is the base of success. I enjoyed listening to foreign friends talking to each other when I was a child. At the same time I watched the English programs on TV. From then on, I kept on learning English .The more I learned, the more progress I made.Second, practice is the key to learning English. Many people study English very hard, but they are very shy to speak it in public, for they are afraid of making a mistake. Remember you have to make a mistake before you can correct it. A native English speaker who has been speaking English for almost 60 years still makes mistakes sometimes.Third, the beginners in English should be encouraged to pay attention to idioms. The English language has many idioms. For example, you should say "He is strong as a horse.", but not "He is strong as a cow."1. The writer wants to tell us .A. the importance of learning EnglishB. the new situation of the reform and open to the outside worldC. some good ideas on how to master EnglishD. the wide use of the English language2. If we want to learn English, we must first .A. show interest in itB. enjoy listening itC. watch English program on TVD. practise speaking it3. When we are learning English, .A. remember the mistakes and correct themB. try not to make any mistakesC. correct mistakes before making themD. don't be afraid of making mistakes4. How do you understand the sentence "Remember you have to make a mistake before you cancorrect it"?A. Remember to make a mistake before you can correct it.B. You are sure to make a mistake before you can correct it.C. Remember you have to make a mistake and then correct it.D. You'll make a mistake after you can correct it.5. What is the most important thing to do in learning English according to the writer?A. Practise listening and speaking as much as possible.B. Pay attention to idioms.C. Don't be shy to speak in public.D. The more you learn, the greater progress you'll make.Passage 2◎题型:材料题How often are letters delivered in your country? Are letters delivered to each person's door? Is mail kept at the post office until someone goes there to get it? If someone lives far from a post office, how does he get his mail?In the United States, most people who live in cities and small towns receive their mail at home. Letters are delivered to the family's door every day. Some people have boxes or baskets for letters beside the front door. If there is no box or basket, the letters are pushed through an opening in the door. Large package are sometimes left besides the door.Many Americans live on farms which are far from any city, town, or village. Their mail is delivered to boxes on the roads near their farms. Every day the farmers who live near this road come to their mailboxes. Mail is delivered to farmers' mailboxes every day. This mail service is called Rural Free Delivery. Rural Free Delivery is also known as RFD.6. How often are letters delivered to the family's door?A. all day longB. every dayC. every other dayD. on Sunday7. Some people have boxes or baskets for letters_________.A. on the doorwayB. beside the front doorC. on the roadsideD. near the house8. If there are no boxes or baskets, the letters are _______.A. returned to the senderB. directly handed over to the receiverC. put into the mailbagD. pushed through an opening in the door9. Farmers' mail is ________.A. kept at the post officeB. delivered to the family's door every dayC. delivered to the boxes on the roads near their farmsD. delivered to the mail box in the front door10. The word "rural" means .A. the countryB. the stateC. mainlandD. motherlandPassage 3◎题型:材料题There are villages, towns and cities in very rural parts of Britain that face the same problems as the rest of Britain. One report shows that communities in the country side are less likely than those in urban areas to have access to good public transport, shops, post offices, pubs and other services.The report shows that:Rural areas have higher employment levels.Rural areas have a higher proportion of small, entrepreneurial businesses.School in rural areas perform better on average at GCSE (General Certificate of Secondary Education 英国普通中等教育证书).People in rural areas are healthier and live longer with mortality rates about 8% below the UK average.71% of people believe that quality of life is better in the countryside, and two thirds of people would like to move there if they could.Far more people in the countryside work in services, IT and public administration than in agriculture.Tourism in the countryside supported an estimated 380,000 jobs, whereas agriculture currently employs just over 1/2 million people.But the report also shows the problem:Farming income has fallen by 60% since 1995.In 1997, 22% of rural parishes had no bus service at all and 75% no daily bus service.That is why we are putting forward specific measures for the countryside.11. According to the passage, which of the following statements is TRUE?A. People in the country side can enjoy the same public transport service as those inurbanareas.B. There are no shops and post offices in the countryside.C. Compared with urban area, the public transport service in the countryside is not well-developed.D. People in urban areas can go to the countryside by public transport service.12. Which of the following statements about the rural areas is NOT true?A. There are more small businesses in rural areas than in urban areas.B. Compared with rural areas, urban areas have lower employment levels.C. Schools in urban areas are much better than those in rural areas.D. People could live longer in rural areas.13. Most people think the quality of life is in the countryside.A. not goodB. betterC. worseD. not bad14. According to the report, which industry in the countryside provides the fewest jobs?A. Service industry.B. IT.C. Agriculture.D. Public administration.15. One of the problems the countryside faces is that .A. no one likes to be engaged in farming work nowadaysB. the farm products cannot be sold at reasonable pricesC. farming income has fallen since 1995D. there is less and less cultivatable land nowPassage 4◎题型:材料题Arabs consider it extremely bad manners to start talking business immediately. Even the busiest government officials always take extra time to be polite and offer refreshments. No matter how busy you are, you should make time for this.The conference visit is a way of doing business throughout the Arab world. Frequently, you will have to discuss your business in the presence of strangers, who may or may not have anything to do with your business. Do not be surprised if your meeting is interrupted several times by people whocome into the room unannounced, whisper, or speak softly to the person with whom you are talking, and leave. Act as though you do not hear, and never show displeasure at being interrupted.When an Arab says "yes", he may mean "maybe". When he says "maybe", he probably means "no". You will seldom get a direct "no" from an Arab because it is considered impolite. Instead of "no", he will say "inshallah", which means, "if God is willing". On the other hand, "yes" does not necessarily mean "yes". A smile and a slow nod might seem like an agreement, but in fact, your host is being polite. An Arab considers it impolite to disagree with a guest.16. The main purpose of this article is to explain ____________.A. why you need extra time when you visit Arab countriesB. how to be polite when doing business in the Arab worldC. why Arab officials are so busyD. what Arabs say when doing business17. According to the passage, which of the following would be considered polite?A. You leave angrily because of interruptions.B. You demand an immediate decision.C. You refuse a cup of tea and show pictures of your product right away.D. You look out of the window while a stranger comes in to speak with the host.18. From the passage, we know that ____________.A. when an Arab wants to say "yes", he often says "maybe"B. an Arab seldom disagrees with a guest to his faceC. when an Arab agrees, a smile and a slow nod will be givenD. "inshallah" is an English word19. Which of the following is NOT an Arab custom?A. To dislike being interrupted during their meeting.B. Often to give you a vague answer.C. Seldom to say "no" directly.D. Seldom to hesitate to start talking business in the presence of strangers.20. The writer of this passage has probably ____________.A. never been to the Arab worldB. worked in the Arab worldC. been against the Arab customsD. liked the Arab customsIII．Cloze Test (10 points)Directions:Each blank in the following passage is provided with four possible choices marked A, B, C and D. Read the whole passage and chose the best answer for each blank.Passage 1◎题型:材料题From childhood to old age, we all use language as a means of broadening our knowledge of ourselves and the world about us. When humans first (1)______, they were like newborn children, unable to use this (2)______ tool. Yet once language developed, the possibilities for human kinds future (3)______ and cultural growth increased.Many linguists believe that evolution is (4)______ for our ability to produce and use language. They (5)______ that our highly evolved brain provides us (6)______ an innate language ability not found in lower (7)______. Proponents of this innateness theory say that our (8)______ for language is inborn, but that language itself develops gradually, (9)______ a function of the growth of the brain during childhood. Therefore there are critical (10)______ times for language development. Current (11)______ of innateness theory are mixed, however, evidence supporting the existence of some innate abilities is undeniable. (12)______, more and more schools are discovering that foreign languages are best taught in (13)______ grades. Young children often can learn several languages by being (14)______ to them, while adults have a much harder time learning another language once the (15)______ of their first language have become firmly fixed.(16)______ some aspects of language are undeniably innate, language does not develop automatically in a vacuum. Children who have been (17)______ from other human beings do not possess language. This demonstrates that (18)______ with other human beings is necessary for proper language development. Some linguists believe that this is even more basic to human language (19)______ than any innate capacities. These theorists view language as imitative, learned behavior. (20)______, children learn language from their parents by imitating them. Parents gradually shape their child's language skills by positively reinforcing precise imitations and negatively reinforcing imprecise ones.1. A. generated B. evolved C. born D. originated2. A. valuable B. appropriate C. convenient D. favorite3. A. attainments B. feasibility C. entertainments D. evolution4. A. essential B. available C. reliable D. responsible5. A. confirm B. inform C. claim D. convince6. A. for B. from C. of D. with7. A. organizations B. organisms C. humans D. children8. A. potential B. performance C. preference D. passion9. A. as B. just as C. like D. unlike10. A. ideological B. biological C. social D. psychological11. A. reviews B. reference C. reaction D. commendation12. A. In a word B. In a sense C. Indeed D. In other words13. A. various B. different C. the higher D. the lower14. A. revealed B. exposed C. engaged D. involved15. A. regulations B. formations C. rules D. constitutions16. A. Although B. Whether C. Since D. When17. A. distinguished B. different C. protected D. isolated18. A. exposition B. comparison C. contrast D. interaction19. A. acquisition B. appreciation C. requirement D. alternative20. A. As a result B. After all C. In other words D. Above allIV. Translation◎题型:材料题I. Translation from Chinese to English (15 points)Directions: Translate the following sentences into English.1. ⾸先，我要说，能到这⾥来我很⾼兴。
2020春华南理工大学网络教育计算机基础平时作业
2020春华南理工大学网络教育《计算机应用基础》平时作业1.按照电子元件划分，计算机经历了几代?（8分）答：按照电子元件划分，计算机经历了四代：1)第一代计算机：电子管计算机时期，属于计算机发展的初级阶段，主要用于科学计算，采用机器语言和汇编语言方式设计程序。
2)第二代计算机：晶体管计算机时期，主要用于科学计算和事务处理，采用类似于自然语言的高级程序语言设计程序。
3)第三代计算机：集成电路计算机时期，计算机广泛应用于各个领域，采用计算机高级程序语言设计程序。
4)第四代计算机：大规模或超大规模集成电路计算机时期，应用领域更加广泛，计算机程序设计的效率更高。
2.冯·诺依曼计算机体系机构的主要思想是什么?（8分）答：冯·诺依曼计算机体系机构的主要思想可以归纳为：(1)计算机中的程序和数据全部采用二进制数表示。
(2)计算机由输入设备、存储设备、运算器、控制器、输出设备组成。
(3)计算机由存储程序控制完成有关工作。
3.说明计算机的工作原理。
（8分）答：计算机的工作原理有：(1)计算机在控制器的控制下，把以文字符号形式存在的数据或程序，通过输人设备转换成二进制代码，存储到计算机的内部存储器。
(2)计算机在控制器的控制下，根据程序的处理要求，从内部存储器中取得数据传送到运算器进行加工，运算器将运算的结果返回到内部存储器。
(3)计算机在控制器的控制下，根据程序的处理要求，从内部存储器中取得数据传送到输出设备，经输出设备将进制代码转换成文字符号显示或打印。
(4)计算机在控制器的控制下，根据操作需要，可以将内部存储器中的数据保存到计算机的外部存储器。
4.什么是Windows文件夹？如何创建一个新的文件夹？（8分）答：(1)Windows文件夹，也叫作目录，文件夹可以存储其他文件夹或文件。
(2)创建新的文件夹的步骤有：选择需要创建文件夹的位置，鼠标右键单击你需要创建文件夹的位置，选择“新建”命令，再选择“文件夹”，这样就会有一个新建文件夹，需要编辑文件夹名称。
华南理工教育-大学英语B-课后习题
答题： A. B. C. D.（已提交）
参考答案：C
4.(单选题) I’m going to_____ and cancel my reservation.
A. put on B. show up C. call up D. leave alone
答题： A. B. C. D.（已提交）
参考答案：B
6.(单选题) Leaving the court, the families all tried to ____ a brave face.
A. put on B. show up C. call up D. leave alone
答题： A. B. C. D.（已提交）
Unit 3 Festivals
窗体底端
1.(单选题) She had a ____ touch with the children and they did everything she asked.
A. magic B. giant C. joyful D. sleepless
答题： A. B. C. D.（已提交）
参考答案：B
15.(单选题) Anyone ____ this opinion may speak out.
A .that againsts B. that against
C. who is against D. who are against
答题： A. B. C. D.（已提交）
参考答案：C
窗体顶端
14.(单选题) The doctor did all ____ to save the wounded boy.
大学英语B(一)_随堂练习2019春华南理工大学网络教育答案
...大学英语B（一）Unit One1.(单选题 )They cancelled the basketball game because of a _____ of interest.A. lackB. needC. lotD. common答题： A. B. C. D. （已提交）参考答案： A问题解析：2.(单选题 )Learning is a long and exciting ______.A. situationB. processC. personD. sign答题： A. B. C. D. （已提交）参考答案： B问题解析：3.(单选题 ) I ’ m _____because I have received lots of presents.A. pleasedB. unhappyC. angryD. resent答题： A. B. C. D. （已提交）参考答案： A问题解析：4.(单选题 )I got confused, too. I seem to have ______ in dealing with numbersA ． knowledge B．development C ．challenge D． difficulty答题： A. B. C. D. （已提交）参考答案： D问题解析：5.(单选题 )People use more words when they ______ with each other.A ． complete B．communicate C ．associate D． acquire答题： A. B. C. D. （已提交）参考答案： B问题解析：6.(单选题 )― How are you doing, Frank?―_______________B. How do you do?C. Great, thanks!D. It’ s A. How are you doing?nice meeting you!答题： A. B. C. D. （已提交）参考答案： C问题解析：7.(单选题 )― Hi, it is nice to meet you!―______________________A. Nice to meet you, too.B. Fine, thank you!C. Good to you.D.How are you?答题： A. B. C. D. （已提交）参考答案： A问题解析：8.(单选题 )― Hello, I’ m Robin.―_______________ My name is Anna.C. You can call me Bob.D.A. How are you?B. How do you do?Fine, thanks.答题： A. B. C. D. （已提交）参考答案： B问题解析：9.(单选题 )― Hello, I’ am Malinda.―Hello, I’ m Adelaide.A. Call my Ada.B. Call Ada for me.C. Call me Ada.D. Call Ada to me.答题： A. B. C. D. （已提交）参考答案： C问题解析：10.(单选题 ) ― Hi, Long time no see.―__________________A. Fine, thank you!B. Nice meeting you, too.C. Long time nosee. D. How do you do?...答题： A. B. C. D. （已提交）参考答案： C问题解析：Every one of us is a mother, father, son or daughter - and we all have dreams - big and small. Unfortunately, too many of us keep these dreams to ourselves because we fear what others might say. My point in writing this is to say it's OK to dream and dream big and talk about your dreams so that others are inspired to dream big too. What a world we would have if everyone did this! My dad was a dreamer. He told me that one day he was going to have a sailboat. We would go to theboat shows whenever they came to town and climb into them. My father would talk to the sales people and I would be busy pretending to sail the boat. It was fun. Then one day we went to the boat place and took out a sailboat on the ocean, what a thrill! Soon afterwards he bought his first boat and named it "LETSGO" and we sailed and sailed big bays and seas around New England. When I was older I got to be the skipper because he not only told me his dream he showed it to me and let me taste the idea on my own. Now I was inspired to dream big too. You see dreams can do wonders for you. When you believe in your dreams, they take on a life of their own. Now you start dreaming up things to do to make your inspiration a reality. More dreams, moreinspiration, then more dreams and a few more. Then one morning youwake up and the dream has come true. My dreams have taken me toso many beautiful places; I've been below the surface of the oceanwatching the beauty of coral and fish as I swim by. I've flown anairplane with pontoon floats from a lake in northern Maine and anotherdifferent plane on a flight over the Grand Canyon. I've also riddenunder my own wind blown sails. The pictures in my head are pricelessand better than any I've taken. Some of the best times I've had werelistening to older people talk about their dreams and what their dreamsdid for their lives. When I hear some of their dreams it inspires me to thinkand dream how I might do that too. I interviewed a man some yearsago who was 80-something years young. He was a sturdy man with thehands to match the story he told me. Hands still strong enough to crackthe shells of the walnuts he offered me and munched on. He hadoutlived his wife but still lived in their neat home with bookcases nearthe fireplace he no doubt built. I asked one question and I didn’ t move for hours. His story of leaving home to explore the world and learna new trade was fascinating to my young mind. But it was after hearinghis tale that I realized what he was really saying to me - not as anaspiring journalist but as a person. He told me he dreamed that hewould have a great life and he had one, so, I could dream abouthaving a great life and get one too. Just as my father had said to meearlier, here was another confirmation. I did just what they said to do, because I could do anything I wanted. Therefore, I say dream... dreambig dreams about your great life to come. I？heading out toward my next one, how about you?11. (单选题 )According to the author, people keep dreams tothemselves because ________.A. they don’ t think their dreams will come trueB. they don’ t have time to realize their dreamsC. their parents don’ t support themD. they fear what others might say答题： A. B. C. D. （已提交）参考答案： D问题解析：12. (单选题 ) In Paragraph 2,“ We would go to the boat shows whenever they came to town” because ________.A. I like to play in the boatB. father likes to talk to the sales peopleC. father hopes to buy a sailboat one dayD. I want to become a skipper in the future答题： A. B. C. D. （已提交）参考答案： C问题解析：13. (单选题 ) Which statement .can best describe the saying” dream can wonders for you” in Para 3？A. Our dream will come true one morning we wake up.B. Dreams can inspire us to make them a reality.C. We will live a better life once we have a dream.D. The more dreams you have, the greater you will be.答题： A. B. C. D. （已提交）参考答案： B问题解析：14. (单选题 )The author has done the following explorations except________.A.swimmingB.flying a plane from a lakeC.flying over a canyonD.sailing across an ocean答题： A. B. C. D. （已提交）参考答案： D问题解析：15. (单选题 )We can infer from Paragraph 6 that the old man ________.A. is rather pleased with his life nowB. was a writer when he was youngC. live a happy life with his wifeD. used to be businessman for some time答题： A. B. C. D. （已提交）参考答案： A问题解析：Unit Two1.(单选题 ) Her _______for writing was a desire for women to get theright to higher education.A ． motivation B．qualification C ． talent D ． technique答题： A. B. C. D. （已提交）参考答案： A问题解析：2.(单选题 ) Don ’ t lend them the car--- they are taking _______ of you.A ． advantage B．notice C ．photo D． control答题： A. B. C. D. （已提交）参考答案： A问题解析：3.(单选题 )The question which will be discussed next week hassomething _______ our salary.A ． to do B．do with C ．to do with D． do答题： A. B. C. D. （已提交）参考答案： C问题解析：4.(单选题 )My parents like the music _______ is quiet and gentle.A ． who B．that C ．whose D．those答题： A. B. C. D. （已提交）参考答案： B（更多作业答案，随堂、平时作业，添加WeChat ID：xu940413）问题解析：5.(单选题 ) What ’ s wrong with him? I haven’ t seen him ________ last Wednesday.A ． on B．since C ．by D．with答题： A. B. C. D. （已提交）参考答案： B问题解析：6.(单选题 ) A lot of small towns in the area are definitely _______ a visit.A ． worthwhile B． worth C ．worthy D ．worthless答题： A. B. C. D. （已提交）参考答案： B问题解析：7.(单选题 )Over years, I had _______ hundreds of books.A ． slipped B．communicated C ． accumulated D． suspected答题： A. B. C. D. （已提交）参考答案： C问题解析：8.(单选题 ) When I _______ my childhood, I couldn’ t help thinking how happy I was at that time.A ．looked forward B．looked up C ．looked down D． looked backon答题： A. B. C. D. （已提交）参考答案： D问题解析：9.(单选题 )For this reason, I have never stopped in my _______ of thisgoal;.A ． favor B．pursuit C ．devotion D．request答题： A. B. C. D. （已提交）参考答案： B问题解析：10. (单选题 )I have no _______ to discuss the matter further with you.A ． desire B．appetite C ．emotion D．tendency答题： A. B. C. D. （已提交）参考答案： A问题解析：We always believe that life will be better after we get married, have ababy, than another. Then we are frustrated that the kids aren't oldenough and we'll be more content when they are. After that we'refrustrated that we have teenagers to deal with. We always tell ourselvesthat our life will be complete when our spouse gets his or her acttogether. when we get a nice car, and are able to go on a nicevocation when we retire. The truth is, there's no better time than rightnow. If not now, when? Yur life will always be filled with challenges. It'sbest to admit this to ourselves and decide to be happy anyway. One ofmy favorite quotes comes from Alfred Souza. He said. "for a long time ithad seemed to me that life was about to begin-real life. But there wasalways some obstacle in the way, something to be gotten through first,some unfinished business, time still to be served, a debt to be paid. Thenlife would begin. At last it dawned on me that these obstacles were mylife." This perspective has helped me to see that there is no way tohappiness. Happiness is the way. So treasure every moment that youhave and treasure it more because you share it with someone special,special enough to spend your time with⋯ans remember that time waits for no man. So stop waiting until you finish school, until you go back toschool; until you lose ten pounds ,until you have husband and kids; untilyour kids leave the house; until you get a new car, until you retire.Happiness is a journey, not a destination. So, work like you don't needmoney, love like you've never been hurt before; Dance like no one'swatching.11. (单选题 )According to the passage, ________ make us feel frustrated.A. getting marriedB. having a babyC. taking care of kidsD. having one thing after another答题： A. B. C. D. （已提交）参考答案： D问题解析：12. (单选题 ) By saying“ If not now, when?” (Para 3), the author means that ________.A. there must be some other time to be happyB. no one knows about the best time to be happyC. now is the best time to be happyD. there is no better time to be happy than right now答题： A. B. C. D. （已提交）参考答案： D问题解析：13. (单选题 ) Which of the following statement is NOT true？A. There are a lot of challenges in one’ s life.B. Alfred Souza believed that obstacles were part of life..C. I like Alfred Souza said about happiness and life.D. Alfred Souza agreed that there is no way to happiness..答题： A. B. C. D. （已提交）参考答案： D问题解析：14. (单选题 )According to the author, happiness is ________.A. a roadB. a tripC. an endD. a destination答题： A. B. C. D. （已提交）参考答案： B问题解析：15. (单选题 ) A piece of advice can be inferred from the passage is that ________.A. everyone should seize the dayB. it is difficult to began a new lifeC. there is no way to happinessD. there is a destination of happiness.答题： A. B. C. D. （已提交）参考答案： A（更多作业答案，随堂、平时作业，添加 WeChat ID：xu940413）问题解析：欢迎您的光临，Word文档下载后可修改编辑.双击可删除页眉页脚.谢谢！让我们共同学习共同进步！学无止境.更上一层楼。
数据库》随堂练习-2020年华南理工大学网络教育
数据库》随堂练习-2020年华南理工大学网络教育参考答案：B在数据管理技术的发展过程中，经历了人工管理阶段、文件系统阶段和数据库系统阶段。
其中，数据库系统阶段具有最高的数据独立性。
数据库的概念模型与具体的机器和DBMS、E-R图、信息世界以及现实世界是独立的。
数据库的基本特点包括数据可以共享或数据结构化、数据独立性、数据冗余小易扩充、统一管理和控制。
选项B中的数据冗余小易扩充是正确的。
数据库是存储在计算机内有结构的数据的集合。
数据库中存储的是数据以及数据之间的联系。
数据库中，数据的物理独立性是指用户的应用程序与存储在磁盘上数据库中的数据是相互独立的。
数据库的特点之一是数据的共享，其中数据共享是指多种应用、多种语言、多个用户相互覆盖地使用数据集合。
数据库系统的核心是数据库管理系统。
9.关于数据库系统，正确的叙述应该是数据库系统能够减少数据冗余，避免数据不一致等问题。
10.将数据库的结构划分成多个层次，主要是为了提高数据库的逻辑独立性和物理独立性，以及管理规范性和数据的共享。
11.数据库(DB)、数据库系统(DBS)和数据库管理系统(DBMS)三者之间的关系是，DBS包括DB和DBMS。
12.在数据库中，产生数据不一致的根本原因是数据冗余，而不是数据存储量太大等原因。
13.数据库管理系统(DBMS)是一种系统软件。
14.数据库管理系统(DBMS)的主要功能是定义数据库，而不是修改、应用或保护数据库。
15.数据库系统的特点是数据共享、数据独立、减少数据冗余、避免数据不一致和加强了数据保护。
16.数据库系统的最大特点是数据的三级抽象和二级独立性，而不是数据共享性、数据的结构化或数据独立性。
17.数据库管理系统能实现对数据库中数据的查询、插入、修改和删除等操作，这种功能称为数据操纵功能，而不是数据定义功能或数据管理功能。
18.数据库的三级模式结构中，描述数据库中全体数据的全局逻辑结构和特征的是模式。
19.数据库系统的数据独立性是指不会因为系统数据存储结构与数据逻辑结构的变化而影响应用程序。
20121230网院试卷《大学英语B》(一)样卷
2012–2013学年度第一学期期末考试《大学英语 B》（一）试卷（样卷）注意事项：1. 本试卷共四大题，满分100分，考试时间120分钟，闭卷；2. 考前请将密封线内各项信息填写清楚；3. 所有答案必须写在答题纸上，做在试卷或草稿纸上无效4．考试结束，试卷、草稿纸随答题纸一并交回。
注意：因为答案全部都在复习范围内，所以请同学们到书上和随堂练习的对应部分查找。
College English Achievement TestBand One （样卷）Part I Use of English (20 points)Directions:There are 20 incomplete dialogs. For each dialog there are 4 choices marked A, B, C, and D. Choose the ONE answer that best completes the dialog.1. ---- Would you like my opening the window?---- ________________A. Take it easy.B. Yes, you can..C. Certainly, please do it.D. No, Idon’t mind.2. ---- You are the first Award winner!---- ________________A. Oh, I’m walking on air.B. Really, it’s out of my expec tation.C. That sounds pretty.D. Not bad.3. ---- I think your Chinese dinner is wonderful, Mrs. Wei.---- ________________A. Oh, I didn’t c ook very well.B. I’m glad you enjoyed it.C. You can come anytime.D. Why do you look so painful?4. ---- ________________---- I’m suffering from a broken leg.A. Are you feeling better?B. How are you?C. What shall I do?D. Why do you look so painful?5. ---- Can you turn down the TV?---- ________________A. Oh, I know.B. I’m sorry. I didn’t realize it was very loud.C. Next time I will turn it down.D. Please pardon me.6. ---- I suppose you can get the driver license this time.---- ________________A. Yes, absolutely.B. No, not yet.C. Sorry, I can’t imagine that.D. Yes, I don’t think I can.7. ---- Did mom ask you to buy two boxes of milk in the supermarket?---- ________________A. No. And so did I.B. She did. And so I did.C. No. And neither did I.D. She did. And so do I.8. ---- ________________---- I’m suffering from a stomachache.A. Are you feeling better?B. What’s trouble with you?C. Is there wrong with you?D. What’s the matter with you?9. What do you think of his suggestion?---- ________________.A. No, I don’t believe it.B. It’s hard to say, actually.C. Sorry, I can’t remember her.D. I never think of it.10. — Hi, Sam, I think you did a good job.— __________________.A. Thank youB. Not at allC. Don't mention itD. I did it quite badly11. — Can I help you with the bag?— __________________.A. No, no. I can take it myself.B. Sorry, you can'tC. Thank youD. No, I'm all right12. — Hello, I'd like to speak to Mark, please.— ___________________.A. Yes, I'm MarkB. It's me hereC. This is Mark speakingD. This is me13. ---- I wonder if you have thought of doing some gentle physical exercise.---- ________________.A. absolutely.B. That sounds goodC. I’d like that, but I don’t know how to.D. Yes, I would.14. — Can you go out with us for dinner this evening?— _________________.A. No, I already have plansB. Thanks a lot but I'm busy tonightC. No, I really don't like being with youD. I'm ill, so I shouldn't go out for dinner15. ---- Excuse me, whereis Dean Lee’s office?---- ________________A. You can’t ask me.B. Pardon? I have no idea.C. Please don’t say so.D. Sorry, Idon’t know. I just came here16.— Sorry, I must be leaving now, because there's a meeting.— ________________A. Oh, no, you can'tB. Yes, you can leave if you likeC. Do you really have to go? Couldn't you at least stay for another cup of tea?D. Oh, no. I don't understand17. Why don't you travel to New York on vacation?— __________________.A. I don't want to goB. Excuse me, because I can'tC. I want to but I haven't got enough moneyD. Because I'm going to school today18. — Congratulations! You won the first prize in today's compitition.— _________________.A. Yes, I beat the othersB. Thank youC. No, no, I didn't do it wellD. It's a pleasure19. — Hello, I'd like to speak to Mark, please.— _________________.A. Yes, I'm MarkB. It's me hereC. This is Mark speakingD. This is me20. — Do you mind if I smoke here?— _______________________________.A. That’s all right.B. OK.C. Of course not.D. Don’t mention it.Part II. Reading Comprehension (40 points)Directions:There are 4 passages in this part. Each passage is followed by 5 questions. For each question there are 4 choices marked A, B, C, and D. Please choose the best answer to the question.Passage OneVitamins are a group if substances found in food. The body needs them for life and health. So naturally, many people are concerned with the question: Am I getting enough vitamins. And am I getting the right kind?Even though very small amounts of each vitamin are enough for the needs of the body, that many people have not enough vitamins has some basis, and this has something to do with their diet— the food they take in. A person eating a good variety of foods gets all the vitamins now known to be needed, with the possible exception of D.The problem is that there are many people who don’t choose foods wisely, don’t get enough variety, and don’t eat the basic fo ods they need to get their vitamins. So the answer to this question is: No extra vitamins are needed, if you eat proper food. In fact, many of the vitamins can not be stored in the body, so when extra vitamins are taken in, the body simply gets rid of them, It is even harmful to put too much of certain vitamins into the body. This has been found to be true of vitamin A and D, when large amounts are taken in.What foods supply what vitamins? Here is a general idea. Vitamin A, for the health of the eyes, skin, teeth, and bones, is found in green vegetables, fruits, eggs, liver and butter. Vitamin B1, which helps the nervous and digestive systems and prevents certain diseases, is found in cereals, pork and liver. VitaminB2 is found in milk, eggs, green vegetables and meats. Vitamin C, which helps boned and teeth, is found in tomatoes, certain fruits and vegetables. These are only a few of the most important vitamins the body needs.21. Our body needs _________ for life and health.A. small amounts of each vitaminB. extra vitaminsC. all vitamins except vitamin DD. large amounts of certain vitamins22. Vitamin A is needed by _________ and can be found in _________.A. bones, porkB. nervous system, milkC. eyes, green vegetablesD. teeth, meats23. Vitamin B1 is very important to_________.A. the digestive systemB. bonesC. liverD. skin24. What will be the result if you take more vitamins than you really need?A. They will do great harm to our body.B. We get all the vitamins needed.C. Our body will function moreD. Our body simply gets rid of them.properly.25. The passage has probably been taken from_________.A. a sports magazineB. a journal of medical scienceC. an aged magazineD. a youth journalPassage TwoIdeal conditions for flying a kite are a large open space like field or a beach, and a steady wind, blowing from one direction, without any sudden gusts. Avoid spots such as clearings or river banks, where the wind is likely to change suddenly, Small kites will be much easier to launch in a gentle wind, and may well tear if the wind is too strong. Big kites on the other hand, will only take off in a reasonably strong wind. Stand with your back to the wind and un wind several meters of line, holding the kite at arm’s length and pulling on the line gently. With a larger kite, ask friend to help. He should stand a little way off, the kite held out in front of him and let go when you give the signal. A kite should never be thrown into the air, but simply released when the wind is strong enough to lift it.Be very careful how you handle your kite and try to avoid any sudden movement once it is in the air. If a particularly violent gust of wind causes it to lose height, unwind a little of the line. Never pull it along on the ground once it has come down, or you will tear it.If you want to bring kite down in a hurry, make the line fast or give it to someone to hold, put your arm over the line and run towards the kite. Always take a pair of scissors, some glue and two or three strips of crepe paper with you for on-the-spot repairs.Never fly a kite near a railway line or a busy road. If the kite comes down suddenly in front of a car, it may cause and accident. Never fly a kite in stormy weather because it could act as a lightning conductor (with you as the earth)!26. Where do people often fly kites?A. In a large open field with sudden gusts.B. In a large open area with a strong wind.C. In a large open space with a steady wind blowing fro one direction.D. At a beach with a gentle wind.27. The passage is mainly about_________.A. the significance of flying a kiteB. the place selection and ways of flying akiteC. some warnings to flying a kiteD. both B and C.28. The underlined word “clearings” in the first paragraph probably means_________.A. open spacesB. large playing-groundsC. places for clearing thingsD. areas which are very clear29. According to the passage, how should we bring a kite down in a hurry?A. Pull the line gently and run towards the kite.B. Fix the line to a place, put the arm over the line and run towards the kite.C. Give the kite to someone to hold, put the arm over the line and run towards the kite.D. Pull the kite and wind the line fast.30. Which of the following can be inferred from the passage?A. Most people like to fly kites.B. Flying a kite near a railway line is dangerous.C. It is very difficult to find and ideal space for flying a kite.D. There are many ways in which people fly their kites.Passage ThreeMany people think that when they become rich and successful, happiness will naturally follow. Let me tell you that nothing is further from the truth. The world is full of very rich people who are as miserable as if they ere living in hell. We have read stories about movie stars who committed suicide or died from drugs. Quite clearly, money is not the only answer to all problems.Wealth obtained through dishonest means does not bring happiness. Lottery winnings do not bring happiness. Gambling winnings do not bring happiness. To my mind, the secret to happiness lies in your successful work, in your contribution towards others’ happiness and in luck or dishonest means, you will know that it is ill-gamed money. If you get your money by taking advantage of others or by hurting others, your wealth will not be happy with it. You will think you are a base person.Long-term happiness is based on honesty, productive work, contribution, and self-esteem. Happiness is not an end: It is a process. It is a continuous process of honest, productive work which makes a real contribution to others and makes you feel you are a useful, worthy person. As Dr. Wayne wrote, “Ther e is no way to happiness. Happiness is the way.” There is no use saying “Someday when I achieve these goals, when I get a car, build a house and own my own business, then I will be really happy.” Life just does not work that way. If you wait for certain things to happen and depend on the external circumstances of life to make you happy, you will always feel unfulfilled. There will always be something missing.31. The best title for this passage is______.A. What is HappinessB. HappinessC. Wealth and HappinessD. Process of Happiness32. According to this passage, which of the following statement is right?A. The richer you’re, the happier you’re.B. Wealth means happiness.C. Movie stars are happy.D. Rich people are not always happy.33. In the second paragraph, the word “means” is equal to ______. .A. waysB. worksC. placesD. hearts34. Long-term happiness is based on the following except______.A. self-esteemB. contributionC. productive workD. lottery winnings35. According to the passage, a person feels happy when he______.A. gets a carB. builds a houseC. owns his own businessD. feels that he is a useful, worthy personPassage FourUnder normal conditions, the act of communication requires the presence of at leasttwo persons: one who sends and one who receives the communication. In order to communicate thoughts and feelings, there must be a conventional system of signs orsymbols that mean the same to the sender and the receiver.The means of communication are too numerous and varied for systematic classification; therefore, the analysis must begin with the means of receiving communication. Reception of communication is achieved by our senses. Sight, hearing, and touching seem to play themost important roles. Smell and taste play very limited roles, for they cannot receive intellectual expression from fully developed systems of sings and symbols.Examples of visual communication are gesture and imitation. Although both frequently accompany speech, there are systems that rely solely on sight, such as those used by deafand dumb persons. Another means of communicating visually is by signals of fire, smoke,flags, or flashing light. Feelings may be simply communicated by touch, such as by handshaking or backslapping, although a highly developed system of hand-stroking hasenabled blind, deaf, and dumb persons to communicate intelligently. Whistling to someone, applauding in a theater, and other forms of communication by sound rely upon the ear as areceiver. The most fully developed form of auditory communication is, of course, thespoken language.The means of communication mentioned so far have two features in common: they lastonly a short time, and the persons involved must be relatively close to each other. Therefore,all are restricted in time and space.36. Reception of communication ___________A. is more important than sending messagesB. depends on two personsC. involves use of the sensesD. play only limited roles37. Applauding is specifically mentioned as an example of __________.A. communication by soundB. gesture and imitationC. communication by sending a messageD. communication between the listener and speaker38. Persons who cannot see, hear, or speak are able to communicate through_________.A. gesturingB. handshakingC. smellingD. hand-stroking39. The author specifically mentions that speech is ____________ .A. often used when other means are impossibleB. necessary for normal communicationC. the only highly developed system of communicationD. the most developed form of communication based on hearing40. According to the passage means of communication __________.A. can develop quickly if there is enough time and space/B. all have the same featuresC. have some limitations even if they are fully developedD. depend on the persons involvedPart III Vocabulary and Structure (25 points)Section ADirections: There are 15 incomplete sentences in this part. For each sentence there are four choices marked A), B), C) and D). Choose the ONE answer that best completes the sentence.41. Watching the TV program on children, I ______ a good idea to solve the problem.A) came out B) came forC) came up with D) came in42. There is a principle for successful communication that friendly smiles will alwayswork______ you.A) at B) outC) for D) against43. Teachers are usually compared ______ candles that burn themselves in order toenlighten others.A) to B) withC) for D) up44. Great emphasis is attached to how to ______ our natural resources.A) make the most of B) make out ofC) make up of D) make of45. The government has acted out a law to reduce the number of ______ into this countryevery year.A) Immigrates B) emigratesC) immigrants D) emigrants46. We are ________ of our gestures and body movements 99% of time.A) beware B) bareC) unaware D) mere47. Billl and Mike are twins, but the former is tall and strong while the ______is short and thin.A) late B) laterC) last D) latter48. The workers work more ______ with the new production line. In other words, they canproduce 1,000 washing machines in a month now, which would take three months before.A) effect B) effectivelyC) efficiently D) efficiency49. The eyes are one of the most _______ instruments of body language.A) expressive B) impressiveC) passive D) active50. I couldn’t ________ how the teacher could be so sharp to read my mind in class.A) bring out B) figure outC) lay out D) work out51. A shy person has ________ making and keeping eye contact.A) trouble B) talentC) skill D) block52. They waited ________ the light on overnight.A) till B) underC) for D) with53. Body language serves a ________ of purposes.A) variation B) variousC) variety D) varying54. States at war with each other would end ________ for the duration of the OlympicGames.A) friendship B) envyC) dishonesty D) hostility55. In the _______ of all the students, she gave a speech to advocate a green earth.A) name B) honorC) term D) sakeSection BDirections: There are 10 blanks in the following passage. For each blank there are 4 choices marked A, B, C, D. You should choose the ONE answer that best completes the passage.Sports and games __56__ our bodies, prevent us from __57__ weight, and keep us healthy. But these are not their _58_ uses. They give us valuable practice ___59___ helping the eyes, brain and muscles to work together. In table tennis, the eyes see the ball coming, __60__ its speed and direction, and pass this information on to the brain. The brain then has to decide __61__to do, and sends its orders to the muscles of the arms, legs, and so on, __62____ the ball is met and hit back __63____ the player wants it to go. All this must happen __64____ very great speed, and only those who have had a lot of __65__ at table tennis can do this successfully. For those who work with their brains, the practice of such skills is especially useful.56. A. make B. build C. are D. strong57. A. losing B. gain C. gaining D. lose58. A. one B. just C. only D. many59. A. on B. in C. at D. by60. A. judged B. to judge C. judging D. judge61. A. which B. what C. where D. how62. A. for that B. for which C. so that D. so what63. A. if B. when C. where D. which64. A. in B. at C. on D. with65. A. practice B. work C. time D. moneyPart V Writing (15 points)Directions: For this part, you are allowed 30 minutes to write a composition on the topic “My Favorite Sports”. You should write no less than 80 word第11页（共 10 页）。
学术英语(下)智慧树知到课后章节答案2023年下华南理工大学
学术英语（下）智慧树知到课后章节答案2023年下华南理工大学模块一测试1.How can we begin an academic text? ( )A:Briefly describe the primary settingof the text B:Open with a riddle, joke or story C:State the thesis briefly anddirectly D:Pose a question related to the subject 答案:Briefly describe theprimary setting of the text;Open with a riddle, joke or story ;State thethesis briefly and directly;Pose a question related to the subject2.When a researcher is first introduced, which kind of information should beincluded? ( )A:Full name and contact information B:Current position andgeneral interest C:His/her birthplace D:Awards received 答案:Full nameand contact information;Current position and general interest;Awards received3.The abstract usually displays the text’s purpose, the main problem orquestion it answers, research methods, research subjects, and the mainfindings. ( )A:错 B:对答案:对nguage patterns, such as “however”, “whereas” and “despite”, are the onlydevices to show the contradictory or contrast relationship between the twoideas. ( )A:对 B:错答案:错5. A good opening often has the functions of ( ). A:providing information toorient readers B:showing the focus of the text C:introducing the topic of thetext D:summarizing author’s main arguments 答案:providing informationto orient readers ;showing the focus of the text;introducing the topic of the text6.What should be avoided when you first introduce a researcher? ( )A:Makethe introduction redundant and casual B:Start with the researcher’s fullname C:Introduce the researcher’s current position D:Introduce theresearcher’s general interest 答案:Make the introduction redundant andcasual模块二测试1.Which of the following components is Not necessary for an argumentativeessay? ( )A:introduction B:body C:counterargument D:conclusion 答案:counterargument2.Which of the following statements is Not true about the Toulmin model?( )A:It shows the author has considered the opponents’ points of view. B:The goal is to persuade the reader that the author’s argument is reasonable. C:Itis a complex argumentative structure. D:It is useful for making simplearguments. 答案:It is useful for making simple arguments.3.What does “compare” mean in a compare and contrast essay? （）A:toidentify the similarities between the subjects B:to find the relationshipsbetween the subjects C:to describe the differences between the subjects D:todraw a conclusion from the subjects 答案:to identify the similaritiesbetween the subjects4.To write a good compare and contrast essay, what should the author do first?( )A:Choose the subjects. B:Consider the main points. C:Develop the essaystructure. D:Brainstorm similarities and differences. 答案:Choose thesubjects.5.How many types are there for the Block structure of a cause and effect essay?( )A:three B:two C:four D:various 答案:two6.Which step is Not necessary for writing a cause and effect essay? ( )A:Createan outline B:Collect opposing opinions C:Choose the topic D:Brainstormcauses and effects 答案:Collect opposing opinions7.What is a problem-solution essay used for? ( )A:Discussing possible methodsto solve the problem. B:Exposing the seriousness of the problem.C:Demonstrating the efficiency of solutions. D:Exploring the relationshipbetween solutions. 答案:Discussing possible methods to solve theproblem.模块三测试1.Which of the following verbs can be used to introduce a citation in a seminar?( )A:reveal B:share C:encourage 答案:reveal2.When mentioning the author/authors of the resources, we should alwaysmention the full name. ( )A:对 B:错答案:错3.Which of the following should not be mentioned in your evaluation of a textwhen you are attending a seminar? ( )A:The detailed information of theauthor or the research team. B:How the ideas in the text are relevant to thediscussion question and the topic. C:Why you agree with the ideas mentioned in the text. 答案:The detailed information of the author or the researchteam.4.After presenting your view, hypothetical examples are not allowed to be usedto support your idea. ( )A:对 B:错答案:错5.Which of the following is not a clarifying question? ( )A:Does it mean that...?B:Are you saying that...? C:What do you mean by...? D:Is there evidence toyour claim? 答案:Is there evidence to your claim?模块四测试1.When we identify the pros in an academic material, we should pay attentionto the key words like ( ).A:drawback B:advantage C:positive 答案:advantage;positive2.In our daily life, choosing what food to eat for lunch is a kind of comparison.( )A:对 B:错答案:对3.While following a lecture, you can try key words, symbols and abbreviationsin your notes to save time and catch up with the speaker. （）A:对 B:错答案:对4. A linear system usually has headings at different levels.（）A:错 B:对答案:对5.The Cornell method of taking notes was developed by Dr. Walter Pauk ofHarvard University. （）A:错 B:对答案:错6.In a charting system, you need to draw a chart and then fill in the facts in theappropriate blanks.（）A:对 B:错答案:对7. A fact is a statement that is true and can be proven.（） A:对 B:错答案:对模块五测试1.When a researcher is first introduced in a text, which of the followinginformation is not provided? ( )A:title B:organization C:age D:discipline 答案:age2.What is the thesis of the text “Working with Robots: Human and MachineCoexistence in the Workforce” (Book 2, Unit 5)? （）A:AI will replace humans in the future.B:Human and machine will work together.C:AI will always serve humans.D:People are worried about the future of A 答案:Human and machine willwork together.3.Which of the following should be included in the introduction? （）A:Athesis statement. B:Detailed background information. C:A general conclusion.答案:A thesis statement.4.With regard to children’s health, the author’s attitude towards social media is( ).A:negative B:neutral C:positive 答案:negative5.The outbreak of intense anger might cause a heart attack. ( )A:对 B:错答案:对6.The author uses a Dove commercial to attract readers. The short video tellsthe audience through an experiment that you are more beautiful in the eyesof others than you are in your own.（） A:错 B:对答案:对7.Quotations can be classified into direct and indirect quotations. （）A:对 B:错答案:对。
华南理工大学网络工程和网络管理平时作业答案
一、选择题共20题;每题2分1、计算机网络的拓扑结构不包括D ..A 总线型B 环型C 星型D 对等型2、千兆以太网普遍使用在区域网络的骨干上;其单个网段的最大长度为C ..A 10mB 100mC 1000mD 10000m3、交换机的工作模式是D ..A 单工B 半双工C 全双工D 以上都可以4、防火墙是一种控制隔离技术;以下不属于其体系结构的是A ..A虚拟局域网 B 屏蔽主机 C 双重宿主主机D 屏蔽子网5、路由器不能通过B 与Internet接入设备进行连接..A 异步串行端口B 同步串行接口C Uplink端口D ISDN BRI端口6、通常将网络划分为三种典型系统;以下不属于该典型系统的是C..A 电路转接B 呼叫接入C 信息转接D 多址接入7、按源节点发送分组的方式进行分类;分组交换网路由选择方法不包括 D ..A 分布式B 扩散式C 选择扩散式D 单路式8、以下不属于自适应式的单路式路由选择算法的是D..A 集中式B 孤立式C 分布式D 选择式9、网络故障管理的主要功能不包括A..A 拓扑管理B 告警监测C 故障定位D 业务恢复10、OSI网络管理功能中;接收告警事件、分析相关信息、及时发现正在进行的攻击和可疑迹象的功能属于B ..A 配置管理B 审计管理C 用户管理D 安全管理11、如果将SNMP模型视为客户/服务器结构;则下面的说法正确的是C..A 管理者可以是客户;也可以是服务器B 管理站是服务器;代理是客户C 管理者是客户;代理是服务器D 以上说法都不对12、以下不属于公共对象请求代理CORBA体系结构组成部分的是A ..A 接口定义语言IDLB 对象管理组OMGC 对象适配器OAD 动态驱动接口DII13、配置交换机时的登陆方式不包括C..A 控制台端口B 远程登陆C Uplink端口D 基于Web的管理方式14、关于虚拟局域网VLAN的说法中;不正确的是D..A VLAN可以控制广播风暴B 可以将某个交换机端口划分到某个VLAN中C 不同VLAN间的数据传输通过FTP协议实现D VLAN可以防止局域网内产生广播效应15、以下不属于交换机链路配置方式的是B..A vlanB accessC dynamicD trunk16、关于以太网交换机;以下说法中不正确的是D..A 交换机工作在数据链路层B 交换机的每个端口形成一个冲突域C 交换机支持多端口同时收发数据D 交换机是一种多端口中继器17、以下选项中;属于动态配置VLAN方法的是 B ..A 按交换机端口分配VLANB 按MAC地址分配VLANC 由DHCP服务器分配VLAND 由智能交换机来划分VLAN18、以下对路由配置命令“”的解释;错误的是A ..A ip route表示静态路由配置命令B ip route表示动态路由配置命令19、下列静态路由配置正确的是 D ..A ip route 129.1.0.0 16 serial 0C ip route 1220、以下关于外部网关协议EGP的说法中;错误的是B..A EGP是距离矢量路由协议B EGP的扩展性较差1、简述典型计算机网络拓扑结构及其各自的特点..答：计算机网络的拓扑结构主要有：总线型拓扑、星型拓扑、环型拓扑、树型拓扑和混合型拓扑..总线型拓扑总线型结构由一条高速公用主干电缆即总线连接若干个结点构成网络..网络中所有的结点通过总线进行信息的传输..这种结构的特点是结构简单灵活;建网容易;使用方便;性能好..其缺点是主干总线对网络起决定性作用;总线故障将影响整个网络.. 总线型拓扑是使用最普遍的一种网络..星型拓扑星型拓扑由中央结点集线器与各个结点连接组成..这种网络各结点必须通过中央结点才能实现通信..星型结构的特点是结构简单、建网容易;便于控制和管理..其缺点是中央结点负担较重;容易形成系统的“瓶颈”;线路的利用率也不高..环型拓扑环型拓扑由各结点首尾相连形成一个闭合环型线路..环型网络中的信息传送是单向的;即沿一个方向从一个结点传到另一个结点；每个结点需安装中继器;以接收、放大、发送信号..这种结构的特点是结构简单;建网容易;便于管理..其缺点是当结点过多时;将影响传输效率;不利于扩充..树型拓扑树型拓扑是一种分级结构..在树型结构的网络中;任意两个结点之间不产生回路;每条通路都支持双向传输..这种结构的特点是扩充方便、灵活;成本低;易推广;适合于分主次或分等级的层次型管理系统..网型拓扑主要用于广域网;由于结点之间有多条线路相连;所以网络的可靠性较搞高..由于结构比较复杂;建设成本较高..混合型拓扑混合型拓扑可以是不规则型的网络;也可以是点-点相连结构的网络..蜂窝拓扑结构蜂窝拓扑结构是无线局域网中常用的结构..它以无线传输介质微波、卫星、红外等点到点和多点传输为特征;是一种无线网;适用于城市网、校园网、企业网..编辑本段局域网的结构局域网中常见的结构为总线型或星型..2、OSI划分的网络管理功能域分别是什么请简单描述..答：网络故障管理计算机网络服务发生意外中断是常见的;这种意外中断在某些重要的时候可能会对社会或生产带来很大的影响..但是;与单计算机系统不同的是;在大型计算机网络中;当发生失效故障时;往往不能轻易、具体地确定故障所在的准确位置;而需要相关技术上的支持..因此;需要有一个故障管理系统;科学地管理网络发生的所有故障;并记录每个故障的产生及相关信息;最后确定并改正那些故障;保证网络能提供连续可靠的服务..○网络配置管理一个实现中使用的计算机网络是由多个厂家提供的产品、设备相互连接而成的;因此各设备需要相互了解和适应与其发生关系的其它设备的参数、状态等信息;否则就不能有效甚至正常工作..尤其是网络系统常常是动态变化的;如网络系统本身要随着用户的增减、设备的维修或更新来调整网络的配置..因此需要有足够的技术手段支持这种调整或改变;使网络能更有效地工作..○网络性能管理由于网络资源的有限性;因此最理想的是在使用最少的网络资源和具有最小通信费用的前提下;网络提供持续、可靠的通信能力;并使网络资源的使用达到最优化的程度.. ○网络计费管理当计算机网络系统中的信息资源是有偿使用的情况下;需要能够记录和统计哪些用户利用哪条通信线路传输了多少信息;以及做的是什么工作等..在非商业化的网络上;仍然需要统计各条线路工作的繁闲情况和不同资源的利用情况;以供决策参考..○网络安全管理计算机网络系统的特点决定了网络本身安全的固有脆弱性;因此要确保网络资源不被非法使用;确保网络管理系统本身不被未经授公的访问;以及网络管理信息的机密性和完整性3、简要描述防火墙体系结构..答：防火墙主要的体系结构：1、包过滤型防火墙2、双宿/多宿主机防火墙3、被屏蔽主机防火墙4、被屏蔽子网防火墙5、其他防火墙体系结构优缺点：1、包过滤型防火墙优点：1处理数据包的速度较快与代理服务器相比；2实现包过滤几乎不再需要费用；3包过滤路由器对用户和应用来说是透明的..缺点：1包过滤防火墙的维护较困难；2只能阻止一种类型的IP欺骗；3任何直接经过路由器的数据包都有被用作数据驱动式攻击的潜在危险;一些包过滤路由器不支持有效的用户认证;仅通过IP地址来判断是不安全的；4不能提供有用的日者或者根本不能提供日志；5随着过滤器数目的增加;路由器的吞吐量会下降；6IP包过滤器可能无法对网络上流动的信息提供全面的控制..2、双宿/多宿主机防火墙优点：1可以将被保护的网络内部结构屏蔽起来;增强网络的安全性；2可用于实施较强的数据流监控、过滤、记录和报告等..缺点：1使访问速度变慢；2提供服务相对滞后或者无法提供..3、被屏蔽主机防火墙优点：1其提供的安全等级比包过滤防火墙系统要高;实现了网络层安全包过滤和应用层安全代理服务；2入侵者在破坏内部网络的安全性之前;必须首先渗透两种不同的安全系统；3安全性更高..缺点：路由器不被正常路由..4、被屏蔽子网防火墙优点：安全性高;若入侵者试图破坏防火墙;他必须重新配置连接三个网的路由;既不切断连接;同时又不使自己被发现;难度系数高..缺点：1不能防御内部攻击者;来自内部的攻击者是从网络内部发起攻击的;他们的所有攻击行为都不通过防火墙；2不能防御绕过防火墙的攻击；3不能防御完全新的威胁：防火墙被用来防备已知的威胁；4不能防御数据驱动的攻击：防火墙不能防御基于数据驱动的攻击..4、简述SNMP体系结构模型及其特点..答：SNMP的网络管理模型包括以下关键元素：管理站、代理者、管理信息库、网络管理协议..管理站一般是一个分立的设备;也可以利用共享系统实现..管理站作为网络管理员与网络管理系统的接口;它的基本构成为：一组具有分析数据、发现故障等功能的管理程序; 一个用于网络管理员监控网络的接口; 将网络管理员的要求转变为对远程网络元素的实际监控的能力; 一个从所有被管网络实体的MIB中抽取信息的数据库..网络管理系统中另一个重要元素是代理者..装备了SNMP的平台;如主机、网桥、路由器及集线器均可作为代理者工作..代理者对来自管理站的信息请求和动作请求进行应答;并随机地为管理站报告一些重要的意外事件..网络资源被抽象为对象进行管理..但SNMP中的对象是表示被管资源某一方面的数据变量..对象被标准化为跨系统的类;对象的集合被组织为管理信息库MIB..MIB作为设在代理者处的管理站访问点的集合;管理站通过读取MIB中对象的值来进行网络监控..管理站可以在代理者处产生动作;也可以通过修改变量值改变代理者处的配置..5、简述入侵检测系统IDS的构成及其功能..答：入侵检测系统Intrusion Detection System;简称IDS是进行入侵检测的软件与硬件的组合;事实上入侵检测系统就是“计算机和网络为防止网络小偷安装的警报系统”.. 入侵检测系统的作用主要是通过监控网络、系统的状态;来检测系统用户的越权行为和系统外部的入侵者对系统的攻击企图..6、简述内部网的分层设计模型;并说明各个层次的主要功能..答：网络的3层分别为核心层、汇聚层、接入层核心层是是所有流量的汇聚点和处理点;它实现数据包的高速交换..汇聚层的主要功能是汇聚网络流量;屏蔽接入层变化对核心层的影响..汇聚层起了承上启下的作用..接入层为最终用户提供访问网络的能力..7、什么是VLAN VLAN有什么优点答：VLANVirtual Local Area Network即虚拟局域网;是一种通过将局域网内的设备逻辑地而不是物理地划分成一个个网段从而实现虚拟工作组的新兴技术..IEEE于1999年颁布了用以标准化VLAN实现方案的802.1Q协议标准草案..VLAN技术允许网络管理者将一个物理的LAN逻辑地划分成不同的广播域或称虚拟LAN;即VLAN;每一个VLAN都包含一组有着相同需求的计算机工作站;与物理上形成的LAN 有着相同的属性..但由于它是逻辑地而不是物理地划分;所以同一个VLAN内的各个工作站无须被放置在同一个物理空间里;即这些工作站不一定属于同一个物理LAN网段..一个VLAN内部的广播和单播流量都不会转发到其他VLAN中;即使是两台计算机有着同样的网段;但是它们却没有相同的VLAN号;它们各自的广播流也不会相互转发;从而有助于控制流量、减少设备投资、简化网络管理、提高网络的安全性..VLAN是为解决以太网的广播问题和安全性而提出的;它在以太网帧的基础上增加了VLAN头;用VLAN ID把用户划分为更小的工作组;限制不同工作组间的用户二层互访;每个工作组就是一个虚拟局域网..虚拟局域网的好处是可以限制广播范围;并能够形成虚拟工作组;动态管理网络..既然VLAN隔离了广播风暴;同时也隔离了各个不同的VLAN之间的通讯;所以不同的VLAN之间的通讯是需要有路由来完成的..VLAN的优点1. 限制广播域..广播域被限制在一个VLAN内;节省了带宽;提高了网络处理能力..2. 增强局域网的安全性..不同VLAN内的报文在传输时是相互隔离的;即一个VLAN内的用户不能和其它VLAN内的用户直接通信;如果不同VLAN要进行通信;则需要通过路由器或三层交换机等三层设备..3. 灵活构建虚拟工作组..用VLAN可以划分不同的用户到不同的工作组;同一工作组的用户也不必局限于某一固定的物理范围;网络构建和维护更方便灵活..8、什么是生成树协议它有什么作用•答：生成树协议STP; Spanning Tree Protocol;又称扩展树协定;是一基于OSI网路模型的数据链路层第二层通讯协定;用作确保一个无回圈的区域网络环境..通过有选择性地阻塞网络冗余链路来达到消除网络二层环路的目的;同时具备链路的备份功能..生成树协议的主要功能有两个：一是在利用生成树算法、在以太网络中;创建一个以某台交换机的某个端口为根的生成树;避免环路..二是在以太网络拓扑发生变化时;通过生成树协议达到收敛保护的目的..9、 IEEE802.11无线局域网有哪些主要部件答：①计算机特别是PC机; ②传输媒体; ③网络适配器; ④网络连接设备;⑤网络操作系统..10、简述代理方式下的基于Web的网络管理实现过程..答：第一种方式是代理方式;即在一个内部工作站上运行Web服务器代理..这个工作站轮流与端点设备通信;浏览器用户与代理通信;同时代理与端点设备之间通信..在这种方式下;网络管理软件成为操作系统上的一个应用..它介于浏览器和网络设备之间..在管理过程中;网络管理软件负责将收集到的网络信息传送到浏览器Web服务器代理;并将传统管理协议如SNMP转换成Web协议如HTTP..第二种实现方式是嵌入式..它将Web功能嵌入到网络设备中;每个设备有自己的Web地址;管理员可通过浏览器直接访问并管理该设备..在这种方式下;网络管理软件与网络设备集成在一起..网络管理软件无须完成协议转换..所有的管理信息都是通过HTTP协议传送..11、什么是网络地址翻译NAT 其实现方式有哪几种答：借助于NAT;私有保留地址的"内部"网络通过路由器发送数据包时;私有地址被转换成合法的IP地址;一个局域网只需使用少量IP地址甚至是1个即可实现私有地址网络内所有计算机与Internet的通信需求..NAT的实现方式有三种;即静态转换Static Nat、动态转换Dynamic Nat和端口多路复用OverLoad..12、交换机的配置必须借助于计算机才能实现;通常情况下;可以通过哪几种方式实现交换机配置答：1、直通交换方式采用直通交换方式的以太网交换机可以理解为在各端口间是纵横交*的线路矩阵电话交换机..它在输入端口检测到一个数据包时;检查该包的包头;获取包的目的地址;启动内部的动态查找表转换成相应的输出端口;在输入与输出交*处接通;把数据包直通到相应的端口;实现交换功能..由于它只检查数据包的包头通常只检查14个字节;不需要存储;所以切入方式具有延迟小;交换速度快的优点所谓延迟Latency是指数据包进入一个网络设备到离开该设备所花的时间..它的缺点主要有三个方面：一是因为数据包内容并没有被以太网交换机保存下来;所以无法检查所传送的数据包是否有误;不能提供错误检测能力；第二;由于没有缓存;不能将具有不同速率的输入／输出端口直接接通;而且容易丢包..如果要连到高速网络上;如提供快速以太网100BASE－T、FDDI或ATM连接;就不能简单地将输入／输出端口“接通”;因为输入／输出端口间有速度上的差异;必须提供缓存；第三;当以太网交换机的端口增加时;交换矩阵变得越来越复杂;实现起来就越困难..2、存储转发方式存储转发Store and Forward是计算机网络领域使用得最为广泛的技术之一;以太网交换机的控制器先将输入端口到来的数据包缓存起来;先检查数据包是否正确;并过滤掉冲突包错误..确定包正确后;取出目的地址;通过查找表找到想要发送的输出端口地址;然后将该包发送出去..正因如此;存储转发方式在数据处理时延时大;这是它的不足;但是它可以对进入交换机的数据包进行错误检测;并且能支持不同速度的输入／输出端口间的交换;可有效地改善网络性能..它的另一优点就是这种交换方式支持不同速度端口间的转换;保持高速端口和低速端口间协同工作..实现的办法是将10Mbps低速包存储起来;再通过100Mbps速率转发到端口上..3、碎片隔离式Fragment Free这是介于直通式和存储转发式之间的一种解决方案..它在转发前先检查数据包的长度是否够64个字节512 bit;如果小于64字节;说明是假包或称残帧;则丢弃该包；如果大于64字节;则发送该包..该方式的数据处理速度比存储转发方式快;但比直通式慢;但由于能够避免残帧的转发;所以被广泛应用于低档交换机中..。
2020华南理工网络教育电路与电子技术随堂练习答案
1.(单选题) 计算元件功率时应注意和的正方向，当和的正方向一致时，计算公式＝，当和的正方向相反时，计算公式＝－，计算结果若＞0表示元件（）功率，表明此元件起（）作用。
A. 吸收，电源B. 发出，电源C. 吸收，负载D. 发出，负载参考答案：C2.(单选题) 额定值为110V，60W的一个白炽灯和额定值为110V，40W的一个白炽灯串联后接到220V的电源上，后果是（）的白炽灯烧坏。
A. 40WB. 60WC. 40W和60WD. 40W或60W参考答案：A3.(单选题) 如图所示电路中，供出功率的电源是（）。
A. 理想电压源B. 理想电流源C. 理想电压源与理想电流源D. 电阻参考答案：A4.(单选题) 如图所示电路，电压源和电流源的功率分别为（）。
A. 12W，－4WB. －12W，4WC. 12W，4WD. －12W，－4W参考答案：B5.(单选题) 如图所示电路中，电压UAB的值为（）。
A. 2VB. 3VC. 1VD.4V参考答案：B6.(单选题) 理想电压源，内阻＝（），理想电流源，内阻＝（）。
A. 0，0B. ∞，∞C. 0，∞D. ∞，0参考答案：C7.(单选题) 如图示电路中，对负载电阻RL而言，点划线框中的电路可用一个等效电源代替，该等效电源是( )。
A.理想电压源B.理想电流源C.不能确定参考答案：A8.(单选题) 在图所示电路中，已知=2V，＝1A。
A、B两点间的电压为（）。
A. 1VB. －1VC. 0D. －2 V参考答案：A9.(单选题) 在图示电路中，电压UAB的值为（）。
A. 2VB. 3VC. 1VD.4V参考答案：B10.(单选题) 电路如图所示， A 点的电位 U A 应为（）。
A.－4VB.－6VC.－10VD. 0V参考答案：A11.(单选题) 如图所示电路中，已知US=12V，IS=2A。
A、B两点间的电压UAB为（）。
A. -6VB. -18VC. 18VD. 6V参考答案：B2.(单选题) 如图所示，6 Ω电阻上流过的电流（）。
华南理工大学学位英语考试题目
华南理工大学学位英语考试题目一、交际用语1、— I'm leaving for Shanghai tomorrow. — __________________ [单选题]A. See you later.B. Have a pleasant trip!(正确答案)C. Let's go out for a drink.2、— I wish you success in your career. —_________________ [单选题]A. Go ahead.B. It doesn't matter.C. The same to you.(正确答案)3、— I suppose there'll be a lot of arguments. — __________________ [单选题]A. I should imagine so.(正确答案)B. No problem.C. That's a good idea.4、—_______________________________ —We have three major divisions: Operations, Sales and Marketing, Finance and Administration. [单选题]A. How many departments do we have?(正确答案)B. Which division are you in?C. Which department shows the best?5、— _________________________— No, sorry, I didn't know the rule about punching in. [单选题]A. Are you late this morning, Wendy?B. Didn't you punch out this morning, Wendy?C. Didn't you punch in this morning, Wendy?(正确答案)6、— I wonder if I could use your computer tonight?— _________ [单选题]A. Sure, go ahead.(正确答案)B. It doesn't matter.C. Who cares?7、—How did you find your visit to Qingdao, Joanna? —_____________ [单选题]A. I went there alone.B. Oh, wonderful indeed.(正确答案)C. A guide showed me the way.8、— Sorry, I made a mistake again. —_________ Practise more and you’ll succeed. [单选题]A. Certainly not.B. Don't mention it.C. Never mind.(正确答案)9、—Could I help you with your heavy box? You are so tired — _________ I can manage it. [单选题]A. No. thanks.(正确答案)B. Yes, please.C. All right.10、— Is it possible for you to expand business there?— _____________ [单选题]A. I like it.B. I'd love to.C. Yes, I think so.(正确答案)二、词汇与结构11. There are a number of students ______ to get ______. [单选题]A. waited; examined(正确答案)B. waiting; examiningC. waiting; examinedD. to wait; examining12. They had a ______ response to the attack of the enemy. [单选题]A. plainB. swift(正确答案)C. relevantD. tedious13. It’s no use ______ to him as he clings very much to his own opinions. [单选题]A. talkB. talksC. to talkD. talking(正确答案)14. When Lily came home at 5 p.m. yesterday, her mother___ dinner in the kitchen. [单选题]A. cookedB. was cooking(正确答案)C. cooksD. has cooked15. Smith seldom went swimming in summer, ______. [单选题]A. his father didn’t tooB. so didn’t his fatherC. nor did his father(正确答案)D. his father also didn’t16. Did you notice the guy _____ head looked like a big potato? [单选题]A. whose(正确答案)B. whichC. whoD. whom17. No matter _____, the little sisters managed to round the sheep up and drive them back home safely. [单选题]A. it was snowing hardB. hard it was snowingC. how it was snowing hardD. how hard it was snowing(正确答案)18. He had to ______ his journey before it had hardly begun. [单选题]A. absorbB. abstractC. abandon(正确答案)D. absent19. It is because of bad weather ______ the football match had to be put off. [单选题]A. soB. so thatC. whyD. that(正确答案)20. The head engineer can’t expect to have much time to ______ to purely personal affairs. [单选题]A. spendB. devoteC. shareD. spare(正确答案)21. I don’t know the park, but it’s ______ to be quite beautiful. [单选题]A. toldB. said(正确答案)C. spokenD. talked22. People _______ a new festival so that African Americans would be able to celebrate their history and culture. [单选题]A. inventedB. producedC. manufacturedD. created(正确答案)23. At that moment she was standing a few meters away from _______ we are now. [单选题]A. where(正确答案)B. whatC. whichD. there24. The key to _______ laws lies in devotion and responsibility of the staff concerned. [单选题]A. enrichingB. enrollingC. enlargingD. enforcing(正确答案)25. Sometimes she feels very depressed, as if tomorrow _______ come. [单选题]B. wouldn’t(正确答案)C. mustn’tD. didn’t26. ________ the price is concerned, this car is a good bargain. [单选题]A. As low asB. As soon asC. As much asD. As far as(正确答案)27. This famous temple is believed ________ about 800 years ago. [单选题]A. being builtB. having builtC. to have builtD. to have been built(正确答案)28. Man has never ceased to search for cures for such _______ diseases as cancer and AIDS. [单选题]A. deadB. dyingC. deathD. deadly(正确答案)29. The girl was standing by the sea, her long hair _______ in the breeze. [单选题]B. dancing(正确答案)C. to danceD. were dancing30. A genius is someone who can achieve something that few people are ______. [单选题]A. capable of(正确答案)B. able toC. enabled toD. able of三、阅读理解一In 1985, the Coca-Cola Company made the decision to change the formula of its leading soft drink. The change was based on the findings of many market studies. These studies had shown that the general response to the new product was good. However, the change of the traditional Coca-cola by New Coke was rejected by the majority of drinkers. In fact, the company had to step back and restart production of the old formula of Coca-cola.The most important reason why New Coke was rejected was the emotional relationship that existed between drinkers and the old soft drink formula. Drinking Coca-cola had become a tradition for many people over its 99 years of existence. The change made by the company was not only in Coke’s formula but also in the traditional values and memories that it represented to the drinkers. ”We had taken away more than the product Coca-cola. We had taken away a little part of them and their past.” The drinkers rejected this “improvement”, because “they believed that Coke stood for traditional val ue….so they felt betrayed when the product changed completely overnight”.Although a lot of research was done by Coca-Cola Company, it didn’t show the depth of drinkers’ emotion for the product. The studies took many forms, but none of the tests wasable to measure the degree of personal and emotional reactions caused by the disappearance of the old, traditional Coca-cola. The weakness of the research was that it was mainly quantitative in form. The result was only numbers that could not show the deep meaning the product had for many people. A more extensive study focusing on the qualitative aspects of the change would perhaps have been able to demonstrate the close relationship existing between drinkers and product.31. Coca-Cola Company changed the formula in 1985 because __________ . [单选题]A. it led the soft drink industry in the marketB. its market studies supported the change in the formula(正确答案)C. it carried out market research for expansionD. it simply felt the need to make the change32. According to the passage, the drinkers rejected New Coke because of __________ . [单选题]A. the late response to the market by Coca-Cola CompanyB. the reproduction of Coca-cola’s old drinks formulaC. a strong dislike by Coca-cola’s regular drinkersD. the emotional relationship between the drinkers and the old soft drink(正确答案)33. The product Coca-cola was believed to stand for __________ . [单选题]A. traditional values and good memories(正确答案)B. traditional customs and happy daysC. past honors and efficient managementD. top quality and wonderful taste34. Which of the following statements is true? [单选题]A. Research by Coca-cola considered emotional factors.B. Coca-Cola did little research before they made the changeC. Research by Coca-cola was quantitative rather than qualitative(正确答案)D. Research by Coca-cola was both quantitative and qualitative35. The author of the article clearly indicates that __________ . [单选题]A. the weakness of the research could have been removedB. Coca-Cola should have measured the quantitative factors more carefullyC. Coca-Cola should have done a more extensive qualitative study(正确答案)D.A slower change of the product might have improved the sales of the company四、阅读理解二Hollywood no longer rules South Korean cinema, which is breaking out all over. Since 1999 filmmakers have been turning out ’s first critically applauded films, and “My Wife Is a Gangster” and “Phone” are the most stunningly good examples. In the way Americans tour , Asians visit to see sites featured in their favorite movies.Korea once looked to for idea, but now the reverse is true. is snapping up remake rights to dozens of Korean films. Madonna’s Maverick Films is remaking the horror film “Phone”. And Dream Works recently bought the rights to another horror film “A Tale of Two Sisters.” To capitalize on all the attention, has moved aggressively to cast itself as the center of ’s film market.The Seoul government and industry leaders are working to rank the Pusan Film Festival as Cannes(嘎纳) East, the festivals where deals get done, a one-stop place where moviemakers can shop for financing, exports, even location. In preparation for the next Pusan Festival this fall, delegations from Indonesia, Malaysia, Taiwan and all over Asia have been flocking to Seoul to study the Korean film revival. ”We look at Korea with an envious eye,” says one of Hong Kong moviemakers, “Filmmakers and audiences have found a real vibes (i.e. good atmosphere) between them, like in the 1970s and ‘80s inHong Kong.”The Korean film industry, however, is still uphill struggle on the way. The annual receipts of Korean films ($580 million) are gaining on those of Asia’s largest film industry: ($820 million) and ($1.93 billion). Yet, financial markets still tend to see movies as cultural venture, rather than a business. As a moviemaking company in , yet KangJeGyu Films had to team up with another filmmaker and an auto-manufacturer in a new company in order to win a listing on the stock market last year.Despite the restriction, Korean films are capturing a rising share of the local and even Asian markets. The lesson of the Korean revival is that money should be invested both into films and into comprehensive theaters that can sustain a film culture.36. The followings are mentioned in Paragraph 1 EXCEPT __________ . [单选题]A.”My Wife Is a Gangster” and “Phone” are the most stunningly good moviesB. Since 1999 filmmakers in have begun to attract attentionC. More and more films have been played in the cinemasD. tourism is more and more prosperous(正确答案)37. According to the second paragraph, the following statements are true EXCEPT__________ . [单选题]A.”A Tale of Two Sisters”, like “My Wife Is a Gangster”, is a horror film(正确答案)B. The movies have brought international attentionC. is paving way for the center of ’s film marketD. Dream Works is one of the largest film companies in America38. According to the third paragraph, the following statements are true EXCEPT__________ . [单选题]A. Some of Asia’s moviemakers are envious ofB. The Pusan Festival is called as Cannes East(正确答案)C. A one-stop service is special in the Pusan Film FestivalD. The Hong Kong’s films were prosperous in the 1970s and ‘80s39. What does "uphill struggle" in Paragraph 4 mean? [单选题]A. close to victoryB. easy fightC. hard and tough struggle(正确答案)D. good struggle40. What will the next paragraph discuss about according to the last paragraph? [单选题]A. Reasons of the Korean film revivalB. The films that will be shotC. The theaters that are boomingD. A film culture in South Korea(正确答案)五、阅读理解三The meaning of “communication” goes a lot deeper than people often think. Communication is about conceiving, sending, receiving, and interpreting messages as well as confirming reception of these messages. A failure at any point in this chain can result in ineffective communication.Ineffective communication can be disastrous. There is a famous story of a British Army Commander who sent the message “Send reinforcements, we're going to advance. ” back to his Command Center, through a long chain of subordinates. When the message finally reached the Command Center, it had become “Send three and four-pence, we're going to a dance. ” The reinforcements never arrived.You can demonstrate this same principle, albeit (尽管） on a less dramatic scale, by trying to play Chinese Whispers with more than 20 people. It is highly unlikely the samemessage you started with will be the one you end with.In a business, there are three main types of communication failure. Each has its own indicative signs.The first type is known as allocative failure. This occurs when a firm is not gathering enough intelligence about its market or (most often), the information is not reaching the right points. The firm will not be allocating resources in step with the shifts in demand. If demand is rising but the firm is suffering from allocative communication failure, then stocks will fall and there will be understaffing. If the inverse happens, there will be a surplus of stocks and overstaffing.The second type is executive failure, where communication to trigger specific events/actions is either late, lacking or in error. The symptoms of this are a general loss of direction in the company or departments, a loss of co-ordination and an increase in complaints from customers as things happen late or not at all.The final type is human failure. This occurs when the general culture of a business or the relationships between particular individuals or departments do not foster effective communication. This leads to alienated staff, an increase in staff turnover, an increase in absenteeism and general frustration among staff. Creativity, especially that which takes place across departmental boundaries, is likely to suffer hugely as team synergy slips.41. Confirming reception of the sent messages means _________. [单选题]A. the messages are sent to right receiversB. the messages are correctly understoodC. the messages are correctly understood by right receivers(正确答案)42. In the famous British Army Commander story, which step probably did NOT go wrong in the communication chain? [单选题]A. Conceiving.(正确答案)B. Sending.C. Receiving.43. What is Chinese whispers? [单选题]A. Who whispers in Chinese.B. A game to pass message around in a whisper.(正确答案)C. Chinese people who don't normally talk very loudly.44. Allocative failure does NOT happen when ___________. [单选题]A. the right information goes to the right place(正确答案)B. a company gathers false informationC. the correct information is not received by the right department or person45. According to the passage, which of the following cases does NOT belong to human failure? [单选题]A. Decreasing creativity across departments.B. Inadequate communication between departments.C. Increasing customer complaints.(正确答案)。
大学英语B(四)·随堂练习2020秋华南理工大学网络教育答案
答题： A. B. C. D.（已提交）
参考答案：B
问题解析：
14.(单选题) - How are you, Bob?- _______
A：How are you?
B：I'm fine. Thank you.
C：How do you do?
D：Nice to meet you.
问题解析：
12.(单选题) ---- Happy birthday to you!-- ___________________
A：Happy birthday to you!
B：I am very glad．
C：That's all right．
D：Thank you．
答题： A. B. C. D.（已提交）
A：When did your parents arrive in Paris?
B：How long have your parents been in Paris?
C：Did your parents arrive in Paris last Wednesday?
D：When will your parents go to Paris？
B：I'll give you a hand.
C：Please do me a favor.
D：I'd come to help.
答题： A. B. C. D.（已提交）
参考答案：B
问题解析：
9.(单选题) - _______________________
- Well, they got there last Wednesday. So about a week.
智慧树知到《计算机网络(华南理工大学)》章节测试答案
智慧树知到《计算机网络（华南理工大学）》章节测试答案第一章1、按照地理范围大小递增的顺序，给计算机网络排名。
A.PAN, LAN, MAN, WANN, PAN, WAN, MANC.WAN, MAN, LAN, PAND.PAN, LAN, WAN, MAN答案: PAN, LAN, MAN, WAN2、1500 字节的用户消息（信息）通过一个链路发送，在网络层和数据链路层分别使用 IP 和以太网协议，每层都有 20 字节的报头（其它层忽略不计）。
协议报头开销占总带宽的比例是多少？A. 1.3%B. 1.7%C. 2.6%D. 3.3%答案: 2.6%3、消息 M 是由 UDP、IP 和以太网协议封装，以此顺序沿着协议栈向下。
使用U、I、E 、 M 分别表示 UDP数据段、IP分组、以太帧、消息（信息）。
以它们被发送的顺序来写，最左边为最先发送。
问：在数据链路层上，协议数据单元（PDU），是怎样的？A.IUMB.EIUMC.UIEMD.MUIE答案: EIUM4、下列哪个选项是一个标准协议的参考模型（顶端到底部）？A.应用层, 传输层, 网络层, 网络接入层B.HTTP, TCP, 以太网, IPC.应用层, 会话层, 网络层, 链路层，物理层D.HTTP, TCP, IP, 802.11答案: 应用层, 传输层, 网络层, 网络接入层5、下面哪种拓扑是极其可靠，但同时也是极耗费成本的？A.星型拓扑B.总线拓扑C.环型拓扑D.全连通拓扑答案: 全连通拓扑6、关于对等通信，也即虚拟通信，错误的说法是：A.数据分组从发方的网络层流到收方的网络层B.数据帧从发方的数据链路层流到收方的数据链路层C.数据段从发方的传输层流到收方的传输层D.其他说法都不对答案: 其他说法都不对7、假设“线”上有一个传入帧 ABC ，由协议进行多路解编和处理（A、 B 和 C 代表各协议及相应的报头，他们都按接收到他们的顺序给出）。
《大学英语2》模拟题B答案-推荐下载
华南理工大学网络教育学院2010-2011学年度第一学期期末考试《大学英语2》模拟题（B卷）I. Use of English (10%)Directions: In this part there are 5 incomplete dialogs. For each dialog there are 4 choices marked A), B), C), and D). Choose the ONE answer that best completes each dialog.1. — There’s something I’d like to talk to you about, Mr. Smith. ____ B_______.— Yes, would Thursday morning at 10 suit you A) Please come to my office .B) Could you come to my office sometime this weekC) Can you phone me D) Would you like to have dinner with us this evening 2. — Oh, welcome! B_____________.— We are sorry for being late. You know, there was a lot of traffic in the street this evening.A) Thanks for your present. B) I’m glad you could come. C) I’ve been waiting for you all evening. D) Why not come early 3. — It’s a great pleasure to have a talk with you.— ___B___________.A) It’s very good of you to say so. B) You are welcome.C) See you. D) It can’t be true.4. — What’s the matter with you, Jim You look pale.— ____B__________.A) Oh, it is well. B) I feel awful today. I didn’t get any sleep last night. C) Yes, but I don’t care. D) It has nothing to do with you.5. — ______B________.— Oh, please don’t.A) I think you’d better cut down your smoking. B) Would you mind if I smoke here C) You smoke like a chimney. Smoking might kill you. D) I like smoking.II. Multiple-Choices (10 points)Directions:In each of the following sentences, there are 4 choices marked A), B), C), and D). Choose the ONE answer that best completes each sentence.1. How can I get it ____B__ to him that this is really important A) over B) through C) up D) on2. The famous author spent half of his life __B____ this novel.A) to write B) writing C) on write D) on writing3. It took Mike a couple of days to ___D___ out what had happened.A) work B) get C) take D) figure4. Teaching materials _A_____ greatly from school to school in the United States.A) vary B) various C) variety D) different5. Police __C____that there may be further terrorist attacks.A) fearless B) fearful C) fear D) afraid6. The girl I met yesterday __B____ to be one of my sister’s old friends.A) turns off B) turns out C) turn on D) turn over7. The old in the country __D____ taken good care of.A) has B) have C) is D) are8. Anybody will do, __C___ they are responsible for that.A) so far as B) as far as C) as long as D) as soon as9. One of the computers is broken and he’s blaming it ___A___ me.A) on B) to C) for D) at10. — ____D__.— I’m not sure what I’ll do. I hope to watch TV and enjoy myself.A) Will you go on a picnic with us tomorrow B) I have a lot of things to do during the summer break.C) Will you go with us to visit the Great Wall D) What are you going to do during the summer break III. Cloze Test (10 points)Directions: There are 10 blanks in the following passage. For each blank there are 4 choices marked A), B), C) and D). Choose the ONE answer that best completes each sentence.Research has found that compulsive spending is more common than previously thought. It is 1. __A______ that in the U.S. alone, about 20 million people suffer from an 2. ____B____ urge to spend, risking their jobs, marriages, families, and finances. The truth is, they would rather shop than 3. __D______ anything else.What is at the 4. _B_______ of the problem 5. ___A_____ to psychiatry (精神病学) professor Donald Black, “Sometimes it is a very pleasurable impulse, and people act on those impulses. Other times, bottled-up anger is the trigger, and shopping is a way of 6. _____A___ the anger.”While 90% of obsessive shoppers are 7. __D______, Black also points 8. ____A____ that many men have the addiction. Male shopaholics (购物狂) are often 9. ______C__ of as “collectors”, buying things like hardware, electronics, and CDs. Women 10. ____C____ to buy lots of cheaper clothes, along with shoes, jewelry, and make-up.1. A) estimated B) estimates C) estimating D) estimation2. A) controllable B) uncontrollable C) uncountable D) countable3. A) did B) doing C) done D) do4. A) end B) root C) base D) result5. A) According B) Due C) Owing D) Considering6. A) tackle B) destroy C) handling D) dealing7. A) children B) men C) youth D) women8. A) out B) to C) in D) up9. A) supposed B) considered C) thought D) viewed10. A) intend B) attend C) tend D) leanedIV. Reading Comprehension (40 points)Directions: There are 4 passages in this part. Each passage is followed by 5 questions. For each question there are 4 choices marked A), B), C), and D). Choose the ONE answer that best completes each sentence.Passage 11 Vitamins are a group of substances found in food. The body needs them for life and health. So naturally, many people are concerned with the question: Am I getting enough vitamins, and am I getting the right kind 2 Even though very small amounts of each vitamin are enough for the needs of the body, that many people have not enough vitamins has some basis. And this has something to do with their diet — the food they take in. A person eating a good variety of foods gets all the vitamins now known to be needed with the possible exception of vitamin D. The problem is that there are many people who don’t choose foods wisely, don’t get enough variety, and don’t eat the basic foods they need to get their vitamins. So the answer to this question is: No extra vitamins are needed, if you eat proper food. In fact, many of the vitamins can not be stored in the body, so when extra vitamins are taken in, the body simply gets rid of them. It is even harmful to put too much of certain vitamins into the body. This has been found to be true of vitamin A and D, when large amounts are taken in. 3 What foods supply what vitamins Here is a general idea. Vitamin A, for the health of the eyes, skin, teeth, and bones, is found in green vegetables, fruits, eggs, liver and butter. Vitamin B1 which helps the nervous and digestive systems and prevents certain diseases, is found in cereals, pork and liver. Vitamin B2 is found in milk, eggs, green vegetables and meats. Vitamin C, which helps bones and teeth, is found in tomatoes, certainfruits and vegetables. These are only a few of the most important vitamins the body needs.1. Our body needs ___A___ for life and health.A) small amounts of each vitamin B) extra vitaminsC) all vitamins except vitamin D D) large amounts of certain vitamins2. C Vitamin A is needed by___C_ and can be found in ______.A) bones, pork B) nervous system, milkC) eyes, green vegetables D) teeth, meats3. A Vitamin B1 is very important to __A____.A) the digestive system B) bones C) liver D) skin4. What will be the result if you take more vitamins than you really need DA) They will do great harm to our body. B) We get all the vitamins needed.C) Our body will function more properly. D) Our body simply gets rid of them.5. The passage has probably been taken from _B_____.A) a sports magazine B) a journal of medical scienceC) an aged magazine D) a youth journalPassage Two1 Many centuries ago, a group of Jews (犹太人) landed in India and immediately went to the king. They told him that they were lost and wanted to settle in his kingdom.2 In those days any foreigner was viewed with suspicion (怀疑), so the king was hesitant about letting them in. He sent for one glass of milk and one glass of water. He asked the leader of the Jews to taste the milk. Then he poured out some milk and added some water. He asked the leader to taste the milk again and said, “What is the difference in taste ”3 The leader said, “The second time the milk tastes terrible.” “That is because of the water added to the milk,” said the king. “The water dilutes the milk and spoils its taste. So too your addition (加入) will spoil the kingdom.” The leader of the Jews thought for a moment and asked for another glass of milk. He then added sugar to the milk and asked the king to taste it. “It tastes sweet,” said the king.4 The leader of the Jews bowed his head and said, “Oh, king！That is how we would like to live here：as the small amount of sugar which sweetens the large quantity of milk and not as the water which dilutes the milk.” Pleased with him the king granted them permission to stay.6. The leader of the Jews went to the king because ___C_____ for life and health.A) they wanted to ask directions B) they wanted to drink some milk C) they wanted to live there D) they wanted to go through the kingdom7. Why was the king hesitant AA) Because he was suspicious of the foreigners.B) Because in those days any foreigner was viewed as a bad guy.C) Because he thought the Jews would rob them of their milk.D) Because Jews were not trusty.8. The king asked the leader of the Jews to taste the milk added with water just to show that __B______.A) the taste was terrible B) if the Jews joined them, they would destroy the countryC) the taste was different from the pure milk D) the taste was sweet9. The underlined word “dilutes” means _____D___.A) reduce B) weaken C) make less delicious D) make (a liquid) thinner by adding another liquid such as water10. The passage implies that the leader of the Jews was ____B____.A) humorous B) witty C) foolish D) unbelievablePassage Three1 Is it difficult for you to get up in the morning Do you sometimes oversleep Are you often late for work or school Yes Then Hiroyuki Sugiyama of Japan has a special bed for you. Hiroyuki’s bed will get you up in the morning! Here is how it works:2 The bed is connected to an alarm clock. First, the alarm clock rings. You have a few minutes to wake up. Next, a tape recorder in the bed plays soft music or other pleasant sounds. A few minutes later, a second recording plays. The second recording can be loud music or unpleasant sounds. If you don’t get up after the second recording, you’ll be sorry. A mechanical “foot” is in the bed. The mechanical foot kicks you in the head. Then the bed waits a few more minutes. What! You’re still in bed! Slowly, the top of the bed rises higher and higher. The foot of the bed goes lower and lower. Finally, the bed is vertical. You slide off the bed and onto the floor. You are awake and out of bed.3 Hiroyuki made his bed because he wanted to win a contest. He works for Honda Motor Company. Once every two years, Honda has a contest—the “All Honda Idea Contest”. In 1996 Hiroyuki won a prize for his bed.11. The purpose of the passage is ____A____.A) to introduce a special bed B) to tell a storyC) to wake somebody up D) to praise Hiroyuki12. What does the special bed do first in the morning DA) Its tape recorder plays soft music. B) Its tape recorder plays loud music. C) It kicks you in the head. D) Its alarm clock rings.13. If you don’t wake up after the clock rings, what will happen CA) The mechanical “foot” kicks you in the head. B) The bed becomes vertical and you slide off the bed.C) The tape recorder plays pleasant sounds. D) You will be late for work.14. Why did Hiroyuki make such a special bed AA) Because he wanted to win the contest held by his company. B) Because he was good at inventing new things.C) Because he wanted to make money. D) Because he sometimes overslept.15. Who is Hiroyuki BA) A scientist. B) A company worker. C) An inventor. D) A carpenter.Passage 41 Each of us fails from time to time. If we are wise, we accept these failures as a necessary part of the learning process. But all too often as parents and teachers we deny this same right to our children. We tell them that failure is something to be ashamed of, that nothing but top performance will meet with our approval.2 When I see a child subject to this kind of pressure, I think of Donnie, my youngest third-grader，he was a shy, nervous perfectionist. His fear of failure kept him from classroom games that other children played with joyous abandon. He seldom answered questions — he might be wrong. Written assignments, especially math, reduced him to nail-biting frustration. He seldom finished his work because he repeatedly checked with me to be sure he hadn't made a mistake3 I tried my best to build his self-confidence. But nothing changed until midterm, when Mary Anne, a student teacher, was assigned to our classroom. She was young and pretty, and she loved children. My pupils, Donnie included, adored her. But even enthusiastic, loving Mary was baffled by this little boy who feared of making mistake.4 Then one morning we were working math problems at the blackboard. Donnie had copied the problems with painstaking neatness and filled in answers for the first row. Pleased with his progress, I left the children with Mary Anne and went for art materials. When I returned, Donnie was in tears. He'd missed the third problem.5 Mary looked at me in despair. Suddenly her face brightened. From the desk we shared, she got a canister of pencils.6 “Look, Donnie,” she said, kneeling beside him and gently lifting the tear-stained face from his arms. She placed the pencils on his desk. “See these pencils, Donnie ” she continued. “They belong to Mrs. Lindstrom and me. See how the erasers are worn That's because we make mistakes too, lots of them. But we erase the mistakes and try again. That’s what you must learn to do, too.”7 She kissed him and stood up. “Here,” she said, “I’ll leave one pencil to you so you’ll remember that everybody makes mistakes, even teachers.” Donnie looked up with love in his eyes and just a glimmer of a smile.8 The pencil became Donnie’s prize. That, together with Mary Anne’s frequent encouragement and unfailing praise for even Donnie’s small successes, gradually persuaded him that it’s all right to make mistakes — as long as you erase them and try again.16. In the author’s opinion, we should consider failures _C_______.A) a shame 可耻的 B) mistakes错误的 C) acceptable 可接受的 D) accessible方便的17. Donnie is a perfectionist, which means he __A______.A) cannot afford any mistakes B) often makes mistakes C) is always perfect D) seldom makes any mistakes18. Mary Anne was puzzled by Donnie because __D______.A) he bit his nails B) he adored her C) he made mistakes in math problems D) his fear of making mistakes19. Mary changed Donnie after ___A_____.A) giving him a pencil B) kneeling beside him and lifting his face from his armsC) persuading him that it’s ok to make mistakesD) erasing his mistakes20. This article tells us that __D______.A) the influence of a teacher is important to a student老师的影响是重要的一个学生B) there are growing pains in a student’s life这是一个学生的生命成长的烦恼C) you should erase your mistakes and try again你应该删除你的错误并再次尝试D) making mistakes is not such a big deal, as long as you try again 犯错并不是什么大不了的，只要你再试试。
工程概预算·随堂练习2020春华南理工大学网络教育答案
工程概预算第一章概论1.1 基本建设1.(单选题)具有独立设计文件，可以独立组织施工，但竣工后不能独立发挥生产能力或效益的工程指（）。
A 单项工程B 单位工程C分部工程D分项工程答题： A. B. C. D. （已提交）参考答案：B问题解析：2.(单选题)按照基本建设项目层次划分，华南理工大学31号教学楼属于（）。
A单项工程 B单位工程C分部工程 D分项工程答题： A. B. C. D. （已提交）参考答案：A问题解析：A. B. C.答题： A. B. C. D. （已提交）参考答案：D问题解析：3.(单选题)竣工结算的编制单位是（）。
A施工单位 B 建设单位C监理单位D设计单位答题： A. B. C. D. （已提交）参考答案：A问题解析：4.(单选题)竣工决算的编制单位是（）。
A施工单位 B 建设单位C监理单位D设计单位答题： A. B. C. D. （已提交）参考答案：B问题解析：5.(单选题)（）是综合反映竣工项目建设成果和财务情况的总结性文件。
A施工预算B施工图预算 C竣工结算 D竣工决算答题： A. B. C. D. （已提交）参考答案：D问题解析：6.(判断题)施工图预算即施工预算。
答题：对. 错. （已提交）A. B. C.A. B. C.A. B. C.答题： A. B. C. D. （已提交）参考答案：A问题解析：11.(单选题)( )被发包人接受的具有工程施工承包主体资格的当事人以及取得该当事人资格的合法继承人。
A.发包人B.承包人C.工程造价咨询人D.造价工程师答题： A. B. C. D. （已提交）参考答案：B问题解析：12.(单选题)( )取得造价工程师注册证书，在一个单位注册、从事建设工程造价活动的专业人员。
A.发包人B.承包人C.工程造价咨询人D.造价工程师答题： A. B. C. D. （已提交）参考答案：D问题解析：A. B. C. D. E.A. B. C. D.第二章建设工程定额2.1建设工程定额概述1.(单选题)（）是指在正常的生产条件下，完成单位合格工程建设产品所需消耗的活劳动的数量标准。
华南理工网络教育操作系统(含课程设计)参考答案
D、进程提出I/O提出则重新调度
答题：A. B. C. D.（已提交）
5.(单选题)以下不属于面向系统的调度准则的是（）
A、系统吞吐量高B、处理机利用率高C、各种资源平衡利用D、响应时间快
答题：A. B. C. D.（已提交）
6.(单选题)设有四个作业同时到达，每个作业的执行时间均为2小时，它们在一台处理机上按单道方式运行，则平均周转时间为( )
A、批处理作业必须提交作业控制信息
B、分时系统不一定都具有人机交互功能
C、从响应时间的角度看,实时系统与分时系统差不多
D、由于采用了分时技术,用户可以独占计算机的资源
答题：A. B. C. D.（已提交）
11.(判断题) Windows是一个单用户多任务操作系统（）
答题：对.错.（已提交）
12.(判断题) UNIX是一个多用户多任务操作系统（）
答题：对.错.（已提交）
13.(判断题)有了操作系统，计算机系统的资源利用率更高，用户使用计算机更方便（）
答题：对.错.（已提交）
14.(判断题)当前三大操作系统类型是批处理系统、分时系统和实时系统（）
答题：对.错.（已提交）
15.(判断题)操作系统是计算机软件和硬件资源的管理者（）
答题：对.错.（已提交）
C、用户操作计算机更方便D、并行执行多个进程
答题：A. B. C. D.（已提交）
3.(单选题)历史上最早出现的操作系统是（）
A、单道批处理系统B、多道批处理系统C、分时系统D、实时系统
答题：A. B. C. D.（已提交）
4.(单选题)实时操作系统必须在（）内处理完来自外部的事件。
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大学英语平时作业
I. 翻译：将下面句子翻译成英文
1.承蒙邀请，不胜荣幸。
(honour)
1、It’s a great honour to be invited.
2. 我明白这事对你有利，但对我有何好处呢？(benefit)
2、I can see this is good for you, but how will I benefit?
3. 我认为政府应该实施新计划来改善人民生活。
（carry out）
3、I think the government should carry out a new plan to improve people’s life.
4. 他不在那列火车上，令我大失所望。
(disappointment)
4、To my great disappointment, he was not on the train.
5. 在我们感到紧张的时候，体育锻炼可以让我们放松。
（relaxation）
5、When we feel nervous, physical exercise can result in relaxation.
6. 他希望能从这次经历中受益。
(profit)
6、He hopes to profit from this experience.
7. 她充分意识到她这份工作的责任。
（be aware of）
7、She is fully aware of the responsibility of her job.
8. 上班时间禁止吸烟。
（forbid）
8、Smoking is forbidden during office hours.
9. 我自己一个人抬不动这个箱子，它太重了。
(on one’s own）
9、I can’t carry the box on my own. It’s too heavy.
10. 玛丽似乎对她儿子的安全一点也不关心。
(be concerned about)
10、Mary didn’t seem to be concerned about her son’s safety at all.
II.作文（60分）
如今，网络购物为人们的生活带来了很多便利，但同时也导致了一些不好的现象。
请结合实际谈谈网络购物的利与弊。
作文：
Nowadays, in the era of network convenience, more and more people can shop on the Internet platform, and can buy anytime, anywhere, and at the same time, it can save the time of going back and forth to the physical store. Online products can choose types, models, colors, and so on, and can easily and quickly compare goods with each other. Online products, from small goods such as clothes and books to big goods such as computers, can be purchased at home without leaving home Shopping brings us a lot of convenience. However, its。