北航15年6月《大学英语1》在线作业试卷一
北师大 大学英语一 作业一
北师大大学英语一作业一答案1-10：AAADB CDAAB11-20:DDCBA ABCAA21-30:BADBA BCBAC简答死于肺癌的吸烟者人数远远超过了非吸烟者的人数。
我希望她明天会改变主意。
她十八岁时就离开了父母。
论述It was Sunday. Our teacher Mr Zhu led us to a park ually we go to the park to spend our holiday. But toda y we went there to take part in voluntary labour.We got there at nine o’clock. Mr Zhu divided us into three groups and then we began working.the students in Group One planted trees and watered flowers. the studentsin Group Two were busy collecting litter left by the tourist. they also cleaned the benches in the park. I was in Group Three. We went to the children’s playground and cleaned all the equipment there. We worked very hard.At about eleven we finished working. We met at the gate of the park. We all felt tired but very happy.。
北航《大学英语1》试题
北航《大学英语1》试题A．byB．toC．ofA．a,anB．an,aC．the,aA.youngestB.the youngestC.youngerD.young试题4[单选题]-（)are you going？-I am going to school.A．WhereB．WhatC．WhenD．How试题5[主观题]Today computers_____a great deal in many fields.[]A.are useeC.are useded[]A.are useeC.are useded试题6[单选题]A new technique(),the yields as a whole increased by20per cent.A．working outB．having worked outC．having been worked outA．theB．aC．/A.arrangeB.arrangingC.arrangedD.to arrange试题9[单选题]He is to（)a train to Paris this afternoon.A．byB．takeC．onA．tired ofB．sick ofC．bored withD．interested in试题11[单选题]An uncertain number of people were waiting.The（)of the election is still uncertain.A．expectationB．possibilityC．developmentA．isB．amC．areD．was试题13[单选题]According to the periodic table,______still some elements undiscovered.A．there seem to beB．it seems to beC．it seems thatA．MustC．MayA．ofB．toC．inD．with试题16[单选题]-what（)you talking about？-（)talking about our new English teacher.A．are,You areB．is,We areC．are,We areD．is,You are试题17[单选题]Although they plant trees in this area every year the tops of some hills are still______.A．blankB．hollowC．vacantA.teachB.to teachC.taughtD.teaching试题19[单选题]There（)a lot of meat on the plate.B．amC．areA．ofB．toC．inA．doB．doesC．amD．is试题22[单选题]An ID card（身份证)（)the personal particulars about the holder such as mane,age,sex,photograph and so on.A．giveB．gaveC．providesA．bad,badB．worst,worstC．worse,worseD．worse,worstA.builtB.is builtC.was builtD.has been built试题25[单选题]The clothes are placed in the closet according（)their colors. A．ofB．toC．inD．for。
北京语言大学2015春《大学英语》（一）作业1标准答案
15春北航《航空英语1》在线作业一满分答案
C. expand
D. enlarge
-----------------选择：A
7. It is a good thing or a bad one? That depends on how you__it.
A. look at
B. fill out
C. pick up
D. apply for
A. who
B. which
C. that
D. what
-----------------选择：B
2. ___ you take a taxi, you’ll still miss your train.
A. Even after
B. Even if
C. Now that
D. Ever since
-----------------选择：B
-----------------选择：A
8. I don't mind ______ the decision as long as it is not too late.
A. you to delay making
B. your delaying making
C. your delaying to make
D. you delay to make
-----------------选择：B
9. ___ you can not answer the question, perhaps we'd better ask someone else.
A. When
B. Though
C. Since
D. After
北航《航空英语1》在线作业一
北京大学15秋《大学英语1》作业6满分答案
北京大学15秋《大学英语1》作业6满分答案作业 ID： 809261. 鼓励独立完成作业，严惩抄袭。
- Why didn’t you come to my birthdayparty yesterday? - _______ A. A. Excuse me, my friend sent me a flower. B. B. Fine, I never go to birthday parties. C. C. Ha… ha, I like swimming.D. D. Sorry, but my wife had a car accident.正确答案：D2. - We are going to have a singing party tonight. Would you like to join us? - _______A. A. I'm afraid not, because I have to go to an important meeting. 大学英语听说1答案B. B. Of course not. I have no idea.C. C. No, I can't.大学英语视听说1答案D. D. That's all set.正确答案：A3. - Do you mind my smoking here? - _______ A. A. No, thanks. B. B. Yes, I do.C. C. Yes. I'd rather not.D. D. Good idea.正确答案：A4. - How are you, Bob? -_______ A. A. How are you?B. B. I'm fine. Thank you.C. C. How do you do?D. D. Nice to meet you.正确答案：B5. - I’m sorry I broke your mirror. - ________A. A. It's OK with me.正确答案：B6. - Excuse me, could you show me the way to the nearest post office? - ______Oh yes! Two blocks away from here a t the Green Avenue. You can’t miss it.A. A. I beg your pardon?B.C. What do you mean?D.E. You're welcome.F. G. Mm, let me think. ———— D 7. - Excuse me, how much is the jacket? - It’s 499 Yuan. _______ A. A. Oh, no. That's OK! B. C. How do you like it? D.E. Which do you prefer?F.G. Would you like to try it on? ————D 8. - Unbelievable!I have failed the driving test again! - _______ This is not the end of the world.A. A. Good luck.B.C. Cheer up.D.E. Go ahead.F. A. Yes, I beat the others. B. C. No, no, I didn't do it well. D. E. Thank you.F. G. It's a pleasure. ———— C 10.- Paul, _______? - Oh, that’s my father! And beside him, my mother. A.A. what is the person over thereB.C. who's talking over thereD.E. what are they doingF.G. which is that ———— B 11.The football match had to be _________ owing to the bad weather. A. A. cancelled B.C. advancedD.E. arrangedF.G. held ———— A12.The retired man is used to ________ his two dogs early in the morning. A. H. exercised I. J. exercises ———— B13.- Write to me when you get home.- OK, I _______. A. A. must B. C. shouldD. E. will F. G. can ————D 14.Tom ________ more than twenty pounds on the novel.A. A. spentB.C. paidD.E. costF. G. took ———— A 15.We came finally _________ the conclusion that she has been telling lies all the time. A.A. ofB.C. into ———— C 16.He has ________ on his farm. A.A. 20 head of cattlesB.C. 20 heads of cattlesD.E. 20 heads of cattleF.G. 20 head of cattle ————D 17.He didn’t live up to _________ had been expected of him. A. A. what B.C. whichD.E. thatF.G. all ———— A18.We’ve missed the last bus. I’m afraid we have no ________ but to take a taxi.A. A. wayB.C. choiceD.E. possibilityF.G. selection A. already B.。
最新北大15春《大学英语1》作业六试卷
北大15春《大学英语1》作业六1.鼓励独立完成作业，严惩抄袭。
- I can’t repair your recorder until tomorrow, I’m afraid. -That’s OK, there’s _________.A. A. no problemB. B. no wonderC. C. no doubtD. D. no worry2.--Why not join us in the game?--______________.A. A. OK! I'm comingB. B. No, you do the sameC. C. Oh, that's all rightD. D. Don't mention it3.- How often do you go dancing?- ________A. A. I will go dancing tomorrow.B. B. Yesterday.C. C. Every other day.D. D. I've been dancing for a year.4.- We’d like two Cokes, please.- _________A. A. Small, medium or large?B. B. You must pay first.C. C. Thank you.D. D. You are welcome.5.- I am terribly sorry! I broke the vase. - _________A. A. I don't want it.B. B. Don't worry.C. C. You meant to do it.D. D. You buy one for me.6.- Marilyn, I’m afraid I have to be leaving now.- ____________A. A. That sounds wonderful.B. B. Oh, so early?C. C. Not at all.D. D. Good luck!7.- ____________ - Well, they got there last Wednesday. So about a week.A. A. When did your parents arrive in Paris?B. B. How long have your parents been in Paris?C. C. Did your parents arrive in Paris last Wednesday?D. D. When will your parents go to Paris？8.- How would you like to mail it?- _______A. A. Thank you very much.B. B. Post office is over there.C. C. I'll be coming.D. D. By air mail, please.9.- Hello, may I talk to the director now?- _________A. A. Sorry, he is busy at the moment.B. B. No, you can't.C. C. Sorry, you can't.D. D. I don't know.10.-- Would you mind changing seats with me?-- ________A. A. Yes, you can.B. B. Of course, I like to.C. C. No, I don't mind.D. D. Certainly, please do.11.He ran _________ the direction of the school.A. A. atB. B. forC. C. inD. D. on12._______fashion differs from country to country may reflect the cultural differences from one aspect.A. A. WhatB. B. ThatC. C. ThisD. D. Which13.I don’t know the park, but it’s______ to be quite beautiful.A. A. saidB. B. toldC. C. spokenD. D. talked14.I didn’t buy the apples; she gave them to me ______ nothing.A. A. withB. B. asC. C. forD. D. by15.We often get ______when people cut in line.A. A. annoyingB. B. annoyedC. C. to annoyD. D. annoy16.You can take as many as you like because these handouts are free of _______.A. A. fareB. B. chargeC. C. moneyD. D. pay17.It is not always easy to tell the right ______the wrong.A. A. fromB. B. withC. C. thanD. D. to18.The weather in Harbin is quite different from ________ in Hainan.A. A. thatB. B. itC. C. the oneD. D. one19.-- Is this your shoe?-- Yes, but where is ________?A. A. the other oneB. B. other oneC. C. another oneD. D. the others20.About 40,000 years ago, the sea was _______ 40 meters below today’s level.A. A. about onlyB. B. only aboutC. C. about muchD. D. much about--------------------------------------------------------------------------------21.By definition, heroes and heroines are men and women distinguished by uncommon courage, achievements, and self-sacrifice made most for the benefits of others - they are people against whom we measure others. They are men and women recognized for shaping our nation’s consciousness and development as well as the l ives of those who admire them. Yet, some people say that ours is an age where true heroes and heroines are hard to come by, where the very idea of heroism is something beyond us - an artifact of the past. Some maintain, that because the Cold War is over and because America is at peace, our age isessentially an unheroic one. Furthermore, the overall crime rate is down, poverty has been eased by a strong and growing economy, and advances continue to be made in medical science.Cultural icons are hard to define, but we know them when we see them. They are people who manage to go beyond celebrity (明星), who are legendary, who somehow mange to become mythic. But what makes some figures icons and others mere celebrities? That’s hard to answer. In part, their lives have the quality of a story to tell. For instance, the beautiful young Diana Spencer who at 19 married a prince, renounced marriage and the throne, and died at the moment she found true love. Good looks certainly help. So does a special indefinable charm, with the help of the media. But nothing confirms an icon more than a tragic death - such as Martin Luther King, Jr., John F. Kennedy, and Princess Diana.The passage mainly deals with ______.单选题A. A. life and deathB. B. heroes and heroinesC. C. heroes and iconsD. D. icons and celebritiesHeroes and heroines are usually _________.单选题A. A. courageousB. B. exemplaryC. C. self-sacrificingD. D. all of the aboveWhich of the following statements is wrong? _________单选题A. A. Poverty in America has been eased with the economic growth.B. B. Superstars are famous for being famous.C. C. One's look can contribute to being famous.D. D. Heroes and heroines can only emerge in war times. Beautiful young Diana Spencer found her genuine love________.单选题A. A. when she was 19B. B. when she became a princessC. C. just before her deathD. D. after she gave birth to a princeWha t is more likely to set an icon’s status? ________单选题A. A. Good looks.B. B. Tragic and early death.C. C. Personal attraction.D. D. The quality of one's story.--------------------------------------------------------------------------------22.This story is about a young man. He worked very hard at his lessons. He was too busy to have a rest. At last, he couldn’t go to sleep. Every night, when he went to bed, he closed his eyes and tried to sleep. But the more he tried, the more he stayed awake.After a while he decided to visit the doctor. “I just can’t go to sleep at night. What should I do?” “I have a suggestion,” said the doctor. “Try counting numbers. By the time you reach one thousand, you’ll be asleep. I am sure of it.”The next day the man reached the doctor’s office. “Well,” said the doctor, “how are you today? Did you try my suggestion?”The man still looked tired. “Yes,” he said, “I tried counting one, two, three...up to one thousand. But when I reached five hundred and sixty-nine, I began to feel sleepy. I had to get up and drink some tea so that I could go on counting up to one thousand, but then I still couldn’t fall asleep.”The young man couldn’t go to sleep because he had worked too hard and became ill.单选题A. A. TB. B. FThe doctor asked the young man to count numbers while he was lying in bed.单选题A. A. TB. B. FThe young man returned to the doctor’s office the next day because he wanted to thank the doctor.单选题A. A. TB. B. FThe young man counted from 1 to 569 and got up to drink some tea.单选题A. A. TThe young man in fact was not able to count numbers. 单选题A. A. TB. B. F--------------------------------------------------------------------------------23.It was getting dark. Some children and two Canadian women were still ___21___ on the ice near a big hotel. They were having a good time.Suddenly the ice broke. One of the boys fell into the water. The chi ldren shouted, “Help! Help!” They didn’t know what to so. The two Canadian friends heard ___22___ and skated over to get the boy out of the water.The ice was thin. The two Canadians fell into the water, too. But they tried their best to ___23___ the little boy. They knew they must be quick. If they didn’t push him up onto the ice, he would soon die.into the water to save the ___24___ people.The boy and the tw o Canadian women were out of water at last. One of the women didn’t feel well. She was sent to the ___25___ at once. But she felt very happy because the boy was safe.单选题A. A. saveB. B. hospitalC. C. three单选题A. A. saveB. B. hospitalC. C. three单选题A. A. saveB. B. hospitalC. C. three单选题A. A. saveB. B. hospitalC. C. three单选题A. A. saveB. B. hospitalC. C. three--------------------------------------------------------------------------------24.英译汉灵格斯、金山词霸等机器翻译零分。
北京大学15秋《大学英语1》作业4答案
北京大学15秋《大学英语1》作业4答案1.鼓励独立完成作业，严惩抄袭。
- How do you like this dress?- _________A. A. I am fine, thank you.B. B. It's very pretty.C. C. I bought this dress at a sale.D. D. It's my sister's.————B2.- What can I do for you, madam?- ______________A. A. Thank you.B. B. You can't help me.C. C. I want to buy a camera.大学英语4答案D. D. I'm glad to hear that.————C3.What day is today?-- _________A. A. It's MarchB. B. It's a fine day today.C. C. It's March.D. D. It's Monday.————D4.What do you think of this novel?-- _________A. A. I've read it.B. B. It's well-written.C. C. It was written by my uncle.D. D. I bought it yesterday.————B5.- Would you like to have some coffee?- _________A. A. No, please.B. B. Yes, I like.C. C. It is a pleasure.D. D. No, thank you.————D6.- Wow! This is a marvelous room! I’ve never known you’re so artistic.- ______A. A. Great, I am very art-conscious.B. B. Don't mention it.C. C. Thanks for your compliments.D. D. It's fine.————C7.- Is it possible for you to work late tonight? - _______A.A. I like it.B.B. I'll do that.C.C. I'd love to.D.D. I think so.————D8.How tall is your sister?-- _________A.A. She is not very well.B.B. She is 28 years old.C.C. She is very nice.D.D. She is as tall as I am.————D9.- Oh, sorry to bother you. -________.A.A. That's okayB.B. No, you can'tC.C. That's goodD.D. Oh, I don't know————A10.How much is this necklace?-- _________A. It's very nice.B.B. It's a birthday present from my parents.C.C. It costs fifty pounds.D.D. It's a bargain.————C11.That man looks familiar to me. He reminds _______ Dr. Richards.A.A. me toB.B. meC.C. me forD.D. me of————D12.Every means _______ been tried to solve the difficult problem.A.A. haveB.B. hasC.C. isD.D. are————A13.Australia is one of the few countries ____ people drive on the left of the road.A.A. whichB.B. thatC. whereD.D. on which————C14.When Laura finally arrived she apologized _______ so late.A.A. for to comeB.B. that she was comingC.C. for comingD.D. to come————C15.____ you know, David has been well lately.A.A. WhichB.B. AsC.C. WhatD.D. When————B16.Each new way of looking at a situation ________ our understanding and makes it easier to discover new possibilities.A.A. deepsB.B. deepensC.C. deepD.D. deeply————B17.Samuel Clemens, ________ as Mark Twain, was one of the most famous American writers.A.A. to knowB.B. to be knownC.C. knownD.D. knowing————C18.Eggs, though rich in nourishments, have ______ of fat.A.A. a large numberB.B. the large numberC.C. a large amountD.D. the large amount————C19.She is not only my classmate ________ also my good friend.A.A. orB.B. butC.C. andD.D. too————B20.I like the teacher _____classes are very interesting and creative.A.A. whichB.B. whoC.C. whoseD.D. what————C-------------------------------------------------------------------------------- 21.请阅读以下文章，回答文章后的五个小题。
北航《大学英语1》在线作业1
作业名称：北航《大学英语1》在线作业1总分： 100 | 及格分数： 60 | 建议答题时间： 90 分钟 | 最大答题次数： 5正确答案1-5 CBCAD第一模块单选题 (5 道题，共 100分)1、We will have to pay them a large ________ of money for their service．(20 分)A sizeB setC amountD series2、I'd appreciate it if you could tell me how_______the machine.(20 分)A operateB to operateC operatingD operated3、I'm sorry to tell you that the materials you wanted are_______．(20 分)A taken offB put upC sold outD got off4、It is obvious that these small businesses are _______need of technical support．(20 分)A inB onC withD to5、_______I am concerned，it is important to get a job first．(20 分)A As long asB As well asC As soon asD As far as北航《大学英语1》在线作业2I'd appreciate it if you could tell me how_______the machine. b to operate(10 分)I'm sorry to tell you that the materials you wanted are_______． C sold outIt is obvious that these small businesses are _______need of technical support．(A in_______I am concerned，it is important to get a job first．D As far as5. The report gives a _____ pictureof the company’s future developmentC.clear6.The company hasbeen producing this model of machine tool ___________ 2008A.since7、Please ________your report carefully before you hand it in to me.(10 分)C.go over8、Even in smallcompanies, computers are a(n)_______tool.B.essential9、We were excitedto learn that the last month’s sales__________by 30%.(10 分)A.had increased10、________ yourname and job title, the business card should also include your telephone numberand addressB.in addition。
北航2015年大学英语预备级1作业2满分答案
B、though C、for D、therefore 答案：C
第 14 题 He talked at the top of his voice, ___ he drew nobody’s attention.
A、yet B、instead C、so D、though 答案：A
第 15 题 Watch your step, ___ you might fall into the water.
第 4 题 The students laughed ___ the silly answers they had put on their tests.
A、at B、 from C、to D、over 答案：A
第 5 题 The bell rang and I hurriedly rushed into the classroom, knocking ___ our math’s teacher.
A、hundreds B、hundred C、hundred off D、several hundred 答案：D
第 19 题 It is said that ___ children in this area were saved in the flood.
A、hundreds off B、one hundred C、some hundreds D、hundred off 答案：B
A、to B、for C、with D、against 答案：A
第 10 题 The picture reminds me ___ the time we spent together in New York.
A、of B、in C、for D、to 答案：A
第 11 题 ___ we will do next is still under discussion.
北交《大学英语1》在线作业一 I found all the seats were taken
大学英语11 单选题1 ____________ , I found all the seats were taken. CA To enter the classroomB Entered the classroomC Entering the classroomD To be entered the classroom2 It is a problem that doesn't need____________right now. BA to solveB solvingC being solvedD to be solving3 They are considering ____________ before the prices go up. CA of buying the houseB with buying the houseC buying the houseD to buy the house4 There's a man at the reception desk who seems very angry and I think he means____________trouble. BA makingB to makeC to have madeD having made5 Today's weather isn't as cold as it was yesterday,____________ ?CA was itB wasn't itC is itD isn't it6 In such dry weather, the flowers will have to be watered if they____________. BA have survivedB are to surviveC would survivedD will survive7 The class ____________ over, we had a ____________discussion. BA been ... heatB being ... heatedC is ... heatingD be ... heated8 It was to save the child____________he got drowned. AA thatB whenC butD while9 I suppose you're not serious, ____________ ? DA don't IB do IC aren't youD are you10 Various programs____________on TV. World news____________best receive. BA will show, areB are shown, isC are showing, isD have shown, are11 If you refuse to go to the party,____________. CA so would sheB so does sheC so will sheD neither will she12 I finally got the job I dreamed about. Never in my life____________so excited. DA did I feelB I feltC I had feltD had I felt13 Kate said that ____________. AA she had finished writing the composition the night beforeB she had finished writing the composition last dayC I finished writing the composition on the last nightD she finished writing the composition before the night14 The problem of housing____________ lead to the problem of social instability. CA itselfB mustC didD never15 My wife said in her letter that she would appreciate ____________ from you sometime. DA to have heardB to hearC for hearingD hearing16 One____________if one breaks the law. AA will be punishedB will punishC is being punishedD has been punished17 If you____________quiet, I'll tell you what happened. CA beB are to beC areD will be18 Robert is said to____________abroad, but I don't know what country he studied in. AA to have studiedB to studyC to be studyingD to have been studying19 I don't know whether you happen____________, but I am going to study in the U.S.A this September. DA to be heardB to be hearingC to hearD to have heard20 The little girl must have lain there for a long time,____________ ? BA mustn't sheB hasn't sheC wasn't sheD didn't she21 I didn't see the minister,____________ did I see the secretary.BA soB norC eitherD none22 A number of paintings in the castle are believed____________ina fire. DA being destroyedB having been destroyedC to be destroyedD to have been destroyed23 Everything seems all right, ____________ ? AA doesn't itB won't itC hasn't itD don't they24 I can't find my dictionary.I wonder whether Mary____________it now. BA haveB hasC is havingD had25 My classmate____________a lot of good deeds for others. BA has been doneB didC was doingD had done。
北航《大学英语预备级1》在线作业一
北航《大学英语预备级1》在线作业一1. It often （）in winter in the north of China.A. snowB. is snowingC. snowsD. snew正确答案： C 满分：4 分得分：42. I still remember the year（）I first came to this beautiful city.A. whichB. in whichC. thatD. for which正确答案： B 满分：4 分得分：43. There is （）sugar. You needn’t go to buy any.A. plenty ofB. a large number ofC. manyD. a正确答案： A 满分：4 分得分：44. Quite often after dinner, they （）music in a pub and （）home about midnight.A. are playing,are goingB. will play,are goingC. play,goD. played,went正确答案： C 满分：4 分得分：45. John is learning Chinese. （）his sister.A. So doesB. Neither isC. Nor doesD. So is正确答案： D 满分：4 分得分：46. Dr Dewey has four sons: （）is in London and （）in New York.A. one, the othersB. one, othersC. one, anotherD. another, one正确答案： A 满分：4 分得分：47. Only if you follow the notes（）operate the machine.A. we canB. will weC. we doD. we will。
2015年春季学期《大学英语1》在线考试1(适用于2015年6月份考试)试卷
2015年春季学期《大学英语1》在线考试1(适用于2015年6月份考试) 试卷总分：100 测试时间：--单选题单选题阅读理解完型填空一、单选题（共30 道试题，共30 分。
）V1. By the time Jane gets home, her aunt _______for London to attend a meeting.A. will leaveB. leavesC. will have leftD. left满分：1 分2. Smoking is bad for your health. So, please _______.A. give it upB. give it inC. give it outD. give it away满分：1 分3. — _______ —I'm suffering from a stomachache.A. Are you feeling better?B. Why are you here?C. Are you pleased?D. What's the matter with you?满分：1 分4. ― Hello. How is everything? ― _________________.A. Nothing muchB. Fine, thanks. How about you?C. I’m pleased to meet youD. I’m fine, thanks满分：1 分5. On average, a successful lawyer has to talk to several ______ a day.A. customersB. supportersC. guestsD. clients满分：1 分6. Had you come five minutes earlier, you ______ the train to Birmingham. But now you missed it.A. would catchB. would have caughtC. could catchD. should catch满分：1 分7. Kate said that _______.A. She had finished writing the composition the night before.B. She had finished writing the composition last day.C. I finished writing the composition on the last night.D. she finished writing the composition before the night.满分：1 分8. My brother like country music, ______ I like pop music.A. whenB. whileC. exceptD. because满分：1 分9. ______ it is very late now, the students are still working in the lab.A. AsB. WhenC. IfD. Although满分：1 分10. It is impossible to live in society and be independent __________ society.A. onB. fromC. inD. of满分：1 分11. It is impossible for so ________ workers to do so ______ work in a single day.A. few, muchB. few, manyC. little, muchD. little, many满分：1 分12. The girls wear _____ dresses on the National Day. They look pretty.A. wornB. shabbyC. colourfulD. colourless满分：1 分13. Let me give you _______.A. an adviceB. some advicesC. such an adviceD. some advice满分：1 分14. The credit card is now providing such great convenience and opportunities _____ people.A. toB. withC. onD. at满分：1 分15. We were deeply impressed by her important _______ to the success of the project.A. workB. determinationC. improvementD. contribution满分：1 分16. —How do you do? —_____A. How are you?B. Good afternoon.C. I'm fine.D. How do you do?满分：1 分17. Professor Smith promised to look ______ my paper, that is, to read it carefully before the defense.A. afterB. overC. onD. into满分：1 分18. He lost the bag _______ he spent lots of money.A. in whichB. on whichC. for whichD. D. to which满分：1 分19. —Sorry to give you so much trouble. —_________A. I think so.B. Oh, I'm sorry.C. It's OK.D. You are busy.满分：1 分20. The next train to Beijing is ____ to arrive at 9 a.m..A. dueB. sureC. earlyD. late满分：1 分21. ______ the temperature, _______ water turns into steam.A. The high, the fastB. Higher, fasterC. The more high, the fasterD. The higher, the faster满分：1 分22. Stars have better players, so I _______them to win.A. hopeB. preferC. expectD. want满分：1 分23. ——I'm engaged! ——_______on your engagement!A. CongratulationsB. PleasureC. WelcomeD. Cheers满分：1 分24. The team really looks good tonight because the coach had them____ every night this week.A. practiceB. to practiceC. practicedD. practicing满分：1 分25. You _____do that, if you don't want to.A. won'tB. mustn'tC. needn'tD. shouldn't满分：1 分26. Both the kids and their parents ______ English, I think. I know it from their accent.A. isB. beenC. areD. was满分：1 分27. —Thank you for your nice gifts. — _____________________A. I'm glad you like it.B. No thanks.C. It's very kind of you.D. I'm sorry to hear that.满分：1 分28. I didn't know what to do, but then an idea suddenly ________ to me.A. appearedB. happenedC. occurredD. emerged满分：1 分29. ——We are planning an outing. _________ ——Sure.A. ｗhere are you going?B. When will you leave?C. How is everything?D. D. Do you want to join us?满分：1 分30. Every year thousands of lives ______ in road accidents because of careless driving.A. loseB. lostC. have lostD. are lost满分：1 分2015年春季学期《大学英语1》在线考试(适用于2015年6月份考试)试卷总分：100 测试时间：--单选题单选题阅读理解完型填空二、单选题（共10 道试题，共20 分。
XXX《大学英语(一)高起专》15春在线作业3答案
XXX《大学英语(一)高起专》15春在线作业3答案1.Please add the examples you have already noted to the ones provided.2.The DMZ extends about 200 kilometers from the east to the west.3.The volume of chemical goods is constantly growing.4.XXX.5.Please don't disturb him。
XXX.6.The XXX here is often said to be similar to that of Japan.7.I don't care about the expense。
I want the party to be a real success.3.Every tramp in the world has been asked to XXX.4.Each man and woman has the same rights.4.I'm not good XXX.5.Give the message to whoever is at the table.5.When science。
business。
and art learn from each other's methods and goals。
the world will be closer to cultural harmony.5.Don't be careless。
or you will make mistakes.6.The n of the new building will cost at least 1,000,000 dollars。
and it's not easy to obtain such a large sum of money.6.The company has ped oil drilling in the area because they have run out of money。
北京航空航天大学 2015年6月课程考试《大学英语预备级2》考核要求 满分答案
北航15年6月课程考试《大学英语预备级2》考核要求满分答案一、单选题（共20 道试题，共40 分。
）1. I wonder if I could use your bicycle for an hour.（）.A. Yes, you need.B. I’m afraid you mustn’tC. Why not? Do it for yourself.D. Of course. Go ahead please.正确答案：D 满分：2 分2. Have you heard（）news？The piece of（）petrol is going up again!A. the, theB. 不填，theC. the, 不填D. 不填，不填正确答案：C 满分：2 分3. As a commander, you should not（）the soldiers to unnecessary danger.A. expressB. explodeC. exploitD. expose正确答案：D 满分：2 分4. My teacher was made（）his teaching because of poor health.A. giving upB. to give upC. given upD. give up正确答案：B 满分：2 分5. The cinema（）last month is very popular especially among the young people in the town.A. opensB. openedC. to openD. having opened正确答案：B 满分：2 分6. The teacher told us an（）story the other day.A. interestingB. interestedC. being interestedD. having interested正确答案：A 满分：2 分7. It is important that the aeroplane （）as light as possible.A. wasB. beC. isD. were正确答案：B 满分：2 分8. What about having a drink? -（）.A. Good ideaB. Help yourselfC. Go ahead, pleaseD. Me, too正确答案：A 满分：2 分9. I have finished typing all（）the last page.A. untilB. butC. toD. for正确答案：B 满分：2 分10. Jim suggested that they（）their supper.A. hadB. would haveC. should haveD. should have eaten正确答案：C 满分：2 分11. Even though he has lived in China for many years, Mark still can not （）himself to the Chinese customs.A. adoptB. adjustC. adaptD. accept正确答案：C 满分：2 分12. “Where（）my umbrella?”“Somebody（）it away by mistake.”A. is, must have takenB. is, must takeC. have been, must takeD. is, takes正确答案：A 满分：2 分13. I don’t know where （）going.A. will sheB. she willC. is sheD. she is正确答案：D 满分：2 分14. （）is absent from school today.A. NeitherB. NoneC. NoD. Not正确答案：B 满分：2 分15. （）an exciting city Shanghai is!A. SoB. VeryC. HowD. What正确答案：D 满分：2 分16. I’ll never forget （）you for the first time.A. meetingB.to meetC.meetD. being met正确答案：A 满分：2 分17. You never told us why you were late for the party,（）?A. weren’t youB. didn’t youC. had youD. did you正确答案：D 满分：2 分18. Would you like a glass of milk? -（）.A. Very niceB. With pleasureC. You can, pleaseD. Yes, please.正确答案：D 满分：2 分19. （）you continue in your efforts and achieve new andgreater successes.A. WouldB. WillC. MayD. Should正确答案：C 满分：2 分20. （）wonderful birthday I am having!A. WhatB. What aC. HowD. How much正确答案：B 满分：2 分1. Though it is mere 1 to 3 percent of the population, the upper class possesses at least 25 percent of the nation's wealth. This class has two segments: upper-upper and lower-upper. Basically, the upper-upper classis the “old rich”—families that have been wealthy for several generations and aristocracy of birth and wealth. Their names are in the Social Register, a listing of acceptable members of high society. A few are known across the nation, such as the Rockfellers, Roosevelts, and Vanderbilts. Most are not visible to the general public. They live in grand seclusion(深居简出)，drawing their income from the investment of their inherited wealth. In contrast, the lower upper class is the “new rich”. Although they may be wealthier than some of the old rich, the new rich have hustled(急于做) to make their money like everybody else beneath their class. Thus their prestige is generally lower than that of the old rich,who have not found it necessary to lift a finger to make their money, and who tend to look down upon the new rich.However its wealth is acquired, the upper class is very, very rich. They have enough money and leisure time to cultivate an interest in the arts and to collect rare books, painting, and sculpture. They generallylive in exclusive areas, belong to exclusive social clubs, communicatewith each other, and marry their own kind—all of which keeps them so distant from the masses that they have been called the out-of-sight class. More than any other class, they tend to be conscious of being members ofa class. They also command an enormous amount of power and influence here and abroad, as they hold many top government positions, run the Councilon Foreign Relations, and control multinational corporations. Theiractions affect the lives of millions.1). All the following statements are true except that ______.A. the upper-upper class is of aristocratic origins.B. the “old rich”enjoy higher prestige than the “new rich”.C. the “old rich”isolate themselves and lead a lonely life.D. the upper class owns at least a quarter of the country's wealth.正确答案：C 满分：4 分2). The “old rich”get richer ______.A. through the Social Register.B. through their reputationC. by investing their inherited wealthD. by collecting paintings and sculptures正确答案：C 满分：4 分3). The reason why the “old rich”look down upon the “new rich”is that ______.A. the former are wealthier than the latter.B. the latter sweat themselves to make money.C. the “new rich”have no interest in arts.D. the “old rich”are conscious of being members of the upper class.正确答案：B 满分：4 分4). To a certain extent the new rich are similar to the lower and middle classes in that ______.A. they engaged in activities to make their money energeticallyB. they live in exclusive areasC. they tend to be conscious of being a member of a classD. they do not draw their income from investment正确答案：A 满分：4 分5). We can learn from the passage that ______.A. the upper class is powerful and influentialB. the upper class collects rare books to make moneyC. the upper class holds all top government positionsD. the “old rich”makes much more money than the “new rich.”正确答案：A 满分：4 分2.Are you aware that you actually possess six senses? The sixth is a muscular sense responsible for directing your muscles intelligently tothe exact extent necessary for each action you perform. For example, when you reach for an object, the sensory nerves linking the muscles to thebrain stop your hand at the correct spot. This automatic perception ofthe position of your muscles in relation to the object is your muscularsense in action.Muscles are stringly bundles of fibers varying from onefive-thousandth of an inch to about three inches. They have three unique characteristics, they can become shorter and thicker; they can stretch;and they can retract to their original positions. Under a high-powered microscope, muscle tissue is seen as long, slender cells with a grainy texture like wood.More than half of a person’s body is composed of muscle fibers, most of which are involuntary—in other words, work without conscious direction. The voluntary muscles, those that we move consciously to perform particular actions, number more than five hundred. Women have only 60 to 70 percent as much muscle as men for their body mass. That is whyan average woman can’t lift as much, throw as far, or hit as hard as an average man.1). According to the selection, the muscular sense is responsible for______.A. the efficiency of our musclesB. the normal breathing functionC. directing our muscles intelligentlyD. the work of only our involuntary muscles正确答案：C 满分：4 分2). Intelligent use of the muscles means that ________.A. one always knows what his muscles are doingB. one performs simple actions without workingC. one’s muscles are used only to the extent necessary for each actionthey performD. one improves muscular action consciously正确答案：C 满分：4 分3). Muscles are unique fibers because, they can ________.A. contractB. stretchC. retractD. do all of the above正确答案：D 满分：4 分4). Under a microscope, muscle cells appear to be _______.A. textured like woodB. colored like woodC. smooth and redD. short and thick正确答案：A 满分：4 分5). According to the selection more than half of a person’s body is composed of ______.A. voluntary musclesB. involuntary musclesC. muscle fibersD. sensory nerves正确答案：C 满分：4 分3. Long after the 1998 World Cup was won, disappointed fans were still cursing the disputed refereeing (裁判) decisions that deniedvictory to their team. A researcher was appointed to study the performanceof some top referees.The researcher organized an experimental tournament (锦标赛) involving four youth teams. Each match lasted an hour, divided into three periods of 20 minutes during which different referees were in charge.Observers noted down the referees' errors, of which there were 61 overthe tournament. Converted to a standard match of 90 minutes, each referee made almost 23 mistakes, a remarkably high number.The researcher then studied the videotapes to analyze the matches in detail. Surprisingly, he found that errors were more likely when thereferees were close to the incident. When the officials got it right, they were, on average, 17 meters away from the action. The average distancein the case of errors was 12 meters. The research shows the optimum (最佳的) distance is about 20 meters.There also seemed to be an optimum speed. Correct decisions came when the referees were moving at a speed of about 2 meters per second. The average speed for errors was 4 meters per second.If FIFA, football's international ruling body, wants to improve the standard of refereeing at the next World Cup, it should encourage refereesto keep their eyes on the action from a distance, rather than rushing tokeep up with the ball, the researcher argues.He also says that FIFA's insistence that referees should retire atage 45 may be misguided. If keeping up with the action is not so important, their physical condition is less critical.1). The experiment conducted by the researcher was meant to _______.A. set a standard for football refereeingB. reexamine the rules for football refereeingC. review the decisions of referees at the 1998 World CupD. analyze the causes of errors made by football referees正确答案：D 满分：4 分2). The number of refereeing errors in the experimental matches was_______.A. quite unexpectedB. as high as in a standard matchC. slightly above averageD. higher than in the 1998 World Cup正确答案：A 满分：4 分3). The findings of the experiment show that _______.A. the more slowly the referee runs, the more likely will errors occurB. errors are less likely when a referee stays in one spotC. errors are more likely when a referee keeps close to the ballD. the farther the referee is from the incident, the fewer the errors正确答案：C 满分：4 分4). The word "officials" (Line 2, Para. 4) most probably refers to _______.A. the referees of the football tournamentB. the observers at the site of the experimentC. the researchers involved in the experimentD. the inspectors of the football tournament正确答案：A 满分：4 分5). What is one of the possible conclusions of the experiment?A. A football referee should be as young and energetic as possible.B. An experienced football referee can do well even when in poor physical condition.C. The ideal retirement age for an experienced football referee is 45.D. Age should not be the chief consideration in choosing a football referee.正确答案：D 满分：4 分-END-。
北航15年6月《大学英语1》作业考核试卷_最新
北航15年6月《大学英语1》作业考核第一模块单选题(25 道题，共100分)1、I feel it is my responsibility______ you of our decision.(4 分)A A. informB B. to informC C. informingD D. informed2、Think over our proposal and let me knowwhether you agree ______it.(4 分)A A. forB B. inC C. withD D. at3、. It is a fact ______ most deaths from lungcancer are caused by smoking.(4 分)A A. thatB B. howC C. whatD D. which4、She didn’t tell the reason ______ she was absent from the importantlecture.(4 分)A A. whatB B. whichC C. howD D. why5、________ his lecture is short, it gives us aclear picture of the new program.(4 分)A A) IfB B) BecauseC C) AlthoughD D) When6、Please give us thereason ________ the goods were delayed.(4 分)A A) whyB B) whichC C) whatD D) how7、There is not doubt ________he is a good employee.(4 分)A A) asB B) whoC C) thatD D) what8、Don’t ________ me to help you if you are not working hard.(4 分)A A) guessB B) speakC C) planD D) expect9、Thegeneral manger has promised to ________ the matter in person.A A) get upB B) look intoC C) see offD D) put on10、Towork ________ with the machine, you mustread the instructions carefully.(4 分)A A) firstlyB B) naturallyC C) efficientlyD D) generally11、If you have three Years' work experience, you will be the right ________ for the(4 分)A A) personB B) passengerC C) touristD D) customer12、While traveling in France, he ________ someeveryday French.(4 分)A A) gave upB B) picked upC C) drew upD D) got up13、We'll have tocontinue the discussion tomorrow ________ we can make a final decision today.(4 分)A A) unlessB B) becauseC C) whenD D) since14、Peter will________ the job as Sales Manager when John retires.(4 分)A A)put awayB B) take overC C) work outD D) make up15、Before ________ forthe job, you will be required to take a language test.(4 分)A A) applyB B) applyingC C) appliedD D) to apply16、________ the rainst ops before 12 o’clock, we will have to cancel the game.(4 分)A A) AsB B) SinceC C) WhileD D) Unless17、What are the essential differences _______ selling and marketing?(4 分)A A) betweenB B) fromC C) amongD D) for18、By the end of this year，they ______ a newprogram in Europe．(4 分)A A) had startedBB) startC C) arestartingD D) will have started19、More than 100 people died _______theearthquake in that area．(4 分)A A) in ease ofBB) as a result ofC C) in addition toD D) on the basis of20、I am writing to apply for the _______ of Sales Manageradvertised in last Friday’s China Dai ly．(4 分)A A) businessBB) tradeC C) positionD D) operation21、If you need more information, please contactus ________ telephone or email.(4 分)A A) inB B) byC C) onD D) for22、Breakfast canbe _________ to you in your room for an additional charge.(4 分)A A. eatenB B. servedC C. usedD D. made23、Even in smallcompanies, computers are a(n)_______tool.(4 分)A A. naturalB B. essentialC C. carefulD D. impossible24、________ yourname and job title, the business card should also include your telephone numberand address.(4 分)A A. As far asB B. In addition toC C. In spite ofD D. As a result of25、To _____ the truth，I really didn’t knowanything about yesterday’s meeting．(4 分)A A) doBB) tellC C) putD D) take。
232839 北交《大学英语(一)》在线作业一 15秋答案
北交《大学英语（一）》在线作业一一、单选题（共 25 道试题，共 100 分。
）1. rsti msurs wr opt to ______ govrnmnt spning.. lightn. ru. ovrom. ontrt正确答案：2. oth you n I______ finish th work in tim.. m. hv. r. is正确答案：3. lthough th poli h spnt whol month invstigting th rim, it sm tht thy h lost ll hop of _____ th riminls.. turning out. triling off. tring k. trking own正确答案：4. Jnt's _______ ws oming mor thn vr strng.. onution. oprtion. hvior. isply正确答案：5. Th whol town ________ to wlom th stronut.. turn out. rh out. rought out. sprng up正确答案：6. His ton ___________ his rl flings mor truly thn his wors.. rought. onvy. hn. fth正确答案：7. Mrs.Grn is out. I hv to _____hr y.. look roun. look up. look ftr. look for正确答案：8. Th numr of thrs in this shool_______ unknown.. r. is ing. is. r ing正确答案：9. I’ll nvr forgt th y _________ I m otor.. whih. whn. of whih. in whih正确答案：10. on't tlk out hr son's hvior t shool. It's (n) __________ sujt to hr. . wkwr. mrrssing. nrvous. isgr正确答案：11. It woul unwis to________ too muh importn to wht h si;. py. tth. provi. init正确答案：12. —You forgot your purs whn you wnt out. —Goo hvns, _______.. so i I. so I i. I i so. I so i正确答案：13. Nws out th impning Gulf Wr m pouring from numr of unnm ______.. origins. sours. wys. pls正确答案：14. ftr stopping for fw minuts, th us mov _________ to its nxt stop.. forwr. off. with. on正确答案：15. Th ol ly show hr ______ y giving th ggr svrl ollrs.. nvoln. vntg. prosprity. ignity正确答案：16. In th nw progrm 3+X if your rm to otor _______, you must tk hmistry s ltiv ours.. rlizs. oms tru. oms off. oms out正确答案：17. lthough mny young popl r_________ on going ro, h prfrs to sty n work in his own ountry.. rzy. kn. m. gr正确答案：18. H stui hr in his youth, __________ ontriut to his grt suss in ltr lif.. tht. it. wht. whih正确答案：19. It ws yr go ________ I first mt him hr.. whih. tht. in whih. whn正确答案：20. If I ____you, I woul go y pln. Flying is muh fstr... ws. wr. m正确答案：21. Nvr for_____in grtr n of morn puli trnsport thn it is toy.. hs this ity n. this ity hs n. ws this ity. this ity ws正确答案：22. Thr is littl sns in ing ______ th hil. ftr ll, h is too young to know tht h ws oing wrong.. f with. hr on. thought of s. xt in正确答案：23. vry tim sh tri to rgu with hr husn, sh ______ rying hr ys out.. n up. rn own. urst out. turn out正确答案：24. Hr xprin __________ how sily young womn n ________ troul ro.. show…gt into. shows…gt in. show…gt in. shows…gt into正确答案：25. s xllnt work ls to promotions n wg inrss, th workrs hv grtr _______ to prou. . motiv. inntiv. intntion. nrgy正确答案：北交《大学英语（一）》在线作业一一、单选题（共 25 道试题，共 100 分。
15秋《大学英语(一)》作业1
B、got
C、grasped
D、hurried
标准答案:A
学员答案:A
本题得分:4
题号:24 题型:单选题（请在以下几个选项中选择唯一正确答案） 本题分数:4
内容:
He tried to _____his nervousness.
A、cover with
内容:
My mother came out to me and she tried to _____me.
A、stop
B、persuade
C、prevent
D、comfort
标准答案:D
学员答案:D
本题得分:4
题号:17 题型:单选题（请在以下几个选项中选择唯一正确答案） 本题分数:4
B、set off
C、set out
D、set aside
标准答案:D
学员答案:D
本题得分:4
题号:9 题型:单选题（请在以下几个选项中选择唯一正确答案） 本题分数:4
内容:
Richard was very bright and_____the crossword in ten minutes.
B、cover on
C、cover up
D、cover in
标准答案:C
学员答案:C
本题得分:4
题号:25 题型:单选题（请在以下几个选项中选择唯一正确答案） 本题分数:4
内容:
Mary _____ tears when she learned her husband had been injured in an accident．
《大学英语(一)》作业参考答案
《大学英语(一)》作业参考答案Part I. Reading ComprehensionPassage 1 1.A 2.A 3.C 4.B 5.CPassage 2 1.B 2.C 3.D 4.A 5.CPassage 3 1.B 2.C 3.D 4.A 5.CPassage 4 1.B 2.D 3.B 4.A 5.CPassage 5 1.D 2.B 3.C 4.A 5.APassage 6 1.C 2.D 3.B 4.D 5.CPassage 7 1.D 2.A 3.B 4.C 5.DPassage 8 1.C 2.C 3.D 4.A 5.APassage 9 1.B 2.D 3.D 4.A 5.APassage10 1.D 2.B 3.C 4.B 5.BPassage11 1.D 2.D 3.A 4.D 5.APassage12 1.C 2.D 3.A 4.B 5.CPart II. Vocabulary and Structure1.D2.D3.D4.A5.C6.C7.A8.A9.B 10C 11.B 12.A13.D 14.A 15.B 16.B 17.A 18.C 19.C 20.C 21.C 22.C 23.C 24.B25.A 26.D 27.B 28.D 29.D 30.D 31.D 32.B 33.C 34.C 35.D 36.B37.B 38.B 39.D 40.B 41.C 42.B 43.B 44.D 45.B 46.C 47.C 48.BPart III. Translation1. He has no longer been writing to his friends ever since he got a mobile phone.2. Professor Li gave a short speech at the commencement. His words were strongly impressed upon my memory.3. I’ve found myself having great interest in spoken English.4. He has great interest in foreign cultures, often browsing through piles of books to look for any useful information.5. Opinions on whether we should start a new society vary a great deal.6. You can’t go to the island other than by boat.7. It was the first time for the freshmen to attend an American professor’s lecture, and they had trouble understanding what he was talking about for the first twenty minutes.8. There were still 10 minutes left. Now that you have finished your test you may hand it in now.9. It took them nearly three months before they made their final decisions without hurting anybody’s feelings.10. The audience must have missed their musical performance, or they would have spoken highly of it.11. Somehow she could sense her mother’s deep concern though she was far away from home.12. She finally arrived at a telephone booth and put in the coins before dialing Paris.Part IV. Grammar1. so2. therefore3. 去掉but4. held5. wrote6. felt7. am8. had already stopped9. knocked10. belongs to11. ailed12. seemedPart V. Writing（略）。
北京大学15秋《大学英语1》作业3答案辅导资料【推荐】
北京大学15秋《大学英语1》作业3答案辅导资料1.鼓励独立完成作业，严惩抄袭。
- May I take your order now?- _________A. A. No, I'm in trouble now.B. B. Yes, we take orders.C. C. Yes, I'd like a dish of chicken.D. D. No, I don't have an order.2.-May I see your tickets, please? - ________A. A. Sure.B. B. No, you can't.C. C. No, they are mine.D. D. Yes, you can.3.I think he is a good lecturer.-- _________A. A. Sorry, it doesn't matter.B. B. So do I.C. C. Yes. It's a good idea.D. D. I don't mind.4.- Hello, I’m Harry Potter.- Hello, my name is Charles Green, but ______.A. A. call my CharlesB. B. call me at CharlesC. C. call me CharlesD. D. call Charles me5.- Ben, would you like to play football with us?- ______, but I have to wash the dishes first.A. A. No, I can'tB. B. I don't want toC. C. Yes, pleaseD. D. I'd love to6.- Hey, Tom, what’s up? - __________A. A. Yes, definitely!B. B. Oh, not much.C. C. What is happening in your life?D. D. You are lucky.Thank you for your invitation. -- _________A. A. It doesn't matter.B. B. It's a pleasure.C. C. It's a small thing.D. D. I'll appreciate it.8.- Who’s speaking?- This is Tom ________.A. A. speaksB. B. spokenC. C. speakingD. D. saying9.Good morning, may I speak to Mark, please? -- _________A. A. Who's there?B. B. Who's that speaking?C. C. Who are you?D. D. Who wants to speak to Mark?10.- Hi, Tom, how’s everything with you? - ___________, and how are you?A. A. Don't mention itB. B. Hm, not too badC. C. ThanksD. D. Pretty fast11.There have been many ________ in their marriage but they still love each other.A. A. right and wrongB. B. back and forthC. C. ups and downsD. D. right and left12.At first I showed great interest in the play, but soon I ________ it.A. A. tiredB. B. got tired ofC. C. was tired fromD. D. was tired with13.If she wants to keep slim, she must make a _____ in her diet.A. A. changeB. B. turnC. C. runD. D. go14.I don’t know the park, but it’s______ to be quite beautiful.A. A. saidB. B. toldC. C. spokenD. D. talked15.She wonders ____will happen to her private life in the future.A. A. thatB. B. itC. C. thisD. D. what16.He has been writing for 3 years, but being a writer is not his ________.A. A. chanceB. B. choiceC. C. changeD. D. character17.________ I’m mistaken, I’ve seen that man before.A. A. UnlessB. B. IfC. C. BecauseD. D. But18.You had better ________ a doctor as soon as possible.A. A. seeingB. B. sawC. C. seeD. D. seen19.I fell and hurt myself while I ________ basketball yesterday.A. A. was playingB. B. am playingC. C. playD. D. played20.The computer system ________ suddenly while he was searching for information on the Internet.A. A. broke downB. B. broke outC. C. broke upD. D. broke in--------------------------------------------------------------------------------21.请阅读以下文章，回答文章后的五个小题。