_科技英语练习3 4 习题以及答案
科技英语练习及答案
科技汉英翻译练习题（一下练习题为课下巩固作业）一、被动态被动语态在汉英翻译中的应用翻译下面具有被动态特征的句子：1.对待检流感病毒样品进行了逆转录和扩增、荧光标记、杂交和扫描分析。
（reverse transcription, amplification, fluorescent dye labeling, hybridization and scanning)。
2.所有含氯氟烃（CFCs）或类似物质的产品必须一律贴上标签，而且禁止使用一切消耗臭氧的非必需品。
3.风速是用米/秒来表示的。
4.这种肺炎是由病毒和真菌引起的。
5.虽然病原体（pathogens)表现出惊人的对抗主体防御的能力，但是它们之间的斗争可以看做是一场无休无止的军备竞赛。
6.因此，这种机制可理解为变构调节( allosteric regulation )。
7.人的免疫系统(innate immune system)一直被认为是“低技术含量的免疫系统”。
直到现在我们才理解先天免疫力具有重要的分子特性。
8.目前已分离出的H5N1病毒是否保留了这个特性还有待证实。
9.据估计，人的疾病有40%是由细菌感染引起的。
10.他们声称这种DNA聚合酶(DNA polymerase)的持续合成能力(processivity)的提高使反应时间大大缩短。
(allow)二、用分词或分词短语翻译划线部分。
(1) 氢是已知元素中最轻的。
Hydrogen is the lightest element ___________.(2) 这个问题一直没有得到解答。
The question remains ___________________.(3) 晶体管体积小、重量轻，优于真空管。
___________, transistors have advantages over vacuum tubes.(4) 速度等于距离除以时间。
Speed equals distance ____________.(5) 电压等于电流乘以电阻。
科技英语阅读试题及答案
科技英语阅读试题及答案一、阅读理解阅读下面的文章，然后回答1-5题。
A New Era in Space ExplorationThe exploration of space has always been a fascinating endeavor for humanity. With the recent advancements in technology, we are now entering a new era of space exploration. Private companies are taking the lead, and the cost of launching satellites and sending payloads into space has significantly decreased. This has opened up opportunities for a wider range of scientific research and commercial applications.1. What is the main theme of the passage?A. The cost of space explorationB. The role of private companies in space explorationC. The history of space explorationD. The new era of space exploration2. According to the passage, what has changed in the field of space exploration?A. The number of countries involvedB. The type of technology usedC. The leadership of government agenciesD. The cost and accessibility3. What does the author suggest about the future of space exploration?A. It will be limited to government projectsB. It will be more expensiveC. It will involve more scientific research and commercial applicationsD. It will be less technologically advanced4. What is the significance of the phrase "taking the lead"in the context of the passage?A. It refers to the government's role in space explorationB. It indicates that private companies are now leading the wayC. It suggests that the cost of space exploration is increasingD. It implies that technology is becoming less important5. What can be inferred from the passage about the impact of the new era of space exploration?A. It will lead to a decrease in scientific researchB. It will result in fewer commercial applicationsC. It will make space exploration more accessibleD. It will limit the opportunities for technological advancements答案：1. D2. D3. C4. B5. C二、词汇理解Read the following sentences and choose the best word to fill in the blanks.6. The development of new materials has _______ theefficiency of many electronic devices.A. enhancedB. reducedC. maintainedD. limited7. Scientists are constantly _______ new methods to study the universe.A. discoveringB. forgettingC. ignoringD. dismissing8. The use of renewable energy sources has _______ the reliance on fossil fuels.A. increasedB. decreasedC. stabilizedD. intensified9. The _______ of artificial intelligence in various fields has revolutionized the way we work and live.A. integrationB. disintegrationC. limitationD. prohibition10. The _______ of the project was delayed due to unexpected technical issues.A. implementationB. terminationC. initiationD. culmination答案：6. A7. A8. B9. A10. A三、完形填空Read the following passage and fill in the blanks with the most suitable word from the options provided.In recent years, the field of robotics has seen a remarkable _______ (11) in its capabilities. This is largely due to the _______ (12) of advanced sensors and artificial intelligence. Robots are now capable of performing complex tasks that were once thought to be the exclusive domain of humans. However, there are concerns about the _______ (13) of job displacementas robots become more proficient.11. A. increaseB. decreaseC. stagnationD. fluctuation12. A. integrationB. exclusionC. obsolescenceD. abandonment13. A. possibilityB. impossibilityC. inevitabilityD. uncertainty答案：11. A12. A13. A四、翻译Translate the following sentences from English to Chinese.14. The breakthrough in nanotechnology has paved the way for the development of new medical treatments.15. The application of blockchain technology is not limitedto financial services; it has the potential to transform various industries.答案：14. 纳米技术的重大突破为新医疗方法的发展铺平了道路。
科技英语作业（含答案）
科技英语作业（含答案）1. It is important you to get there in time.a) that b) ofc) for d) whether2. He was lucky to escape to prison.a) being sent b) sendingc) to be sent d) sent3. He is very busy his paper. He is far too busy____ callers.a) to write/to receive b) writing/to receivec) writing/receiving d) to write/for receiving4. My younger brother couldn’t help when his toy plane fell into the river.a) to cry b) cryingc) cry d) being cried5. They are going to help the trees.a) watering b) waterc) watered d) while watering6. I remember something like that.a) his saying b) him to sayc) he said d) that he had said7. “My girl friend is in a bad mood.”“Why her some flowers?”a) not giving b) don’t givec) you don’t give d) not give8. The music was so that the audience were to death.a) boring/bored b) bored /boringc) bored /bored d) boring/boring9. He had us all through the meal.a) laugh b) laughed c) laughing d) to laugh10. The question tomorrow is whether income tax should be increased.a) to be debated b) to debatec) debated d) that it will be debated答案：1-5 CABBB 6-10 ADACA1. , they went swimming.a) Be a hot day b) It was a hot dayc) Due to a hot day d) The day being hot2. His parents , the orphan is now taken care of by the government.a) have died b) deadc) dying d) having died3. Rather than everything to the last minute, he always prefers to start early.a) to leave b) leavingc) leave d) having left4. They found the lecture hard .a) to understand b) to be understoodc) for understanding d) for being understood5. I suggest , for he has a long time to wait.a) him to sit down b) he sits downc) he sit down d) him sitting down6. Good-bye, Mr. Jones. I am pleased you.a) to meet b) meetc) to have met d) to have been meeting7. W ould you mind quiet for a moment? I’m trying___a form.a) keeping/filling out b) to keep/to fill outc) keeping/to fill out d) to keep/filling out8. I intended yesterday, but I had to attend a meeting.a) to have come b) to be comingc) to come d) that I came9. I was about the office when the telephone rang.a) leaving b) to have leftc) to leave d) to leaving10. economically, one gallon of oil will last at least two months.a) Using b) Usedc) Having used d) To be used答案：1-5 DDCAC 6-10 CCACB1. According to the time table, the train for London at seven o’clock in the evening.A. was leavingB. has leftC. leaves2. You needn’t hurry her. She it by the time you are ready.A. will have finishedB. would finishC. will have been finishingD. will be finishing3. While Peggy , her brother is playing records.A. readsB. is readingC. has readD. has been reading4. We on it for several hours, but we have not yet reached any conclusion.A. workB. are workingC. have been workingD. have been worked5. The children many times not to go near the street.A. have toldB. toldC. have been toldD. were being told6. The new type of computer is going to the month after next.A. turn outB. be turned outC. will be turn outD. will turn out7. After being tested in many ways, this newly-designed machine will in the near future.A. be taken actionB. come to useC. be put into useD. take its place8. The team is good, but not as good as .A. oursB. usC. we9. Bob’s work proved than that of others.A. not much betterB. not more betterC. no more as goodD. not much as good10. I think he is than I.A. elder three yearsB. old three yearsC. three years elderD. three years older答案：1-5.CABCC 6-10.BCAAD1. We are glad to when you needed our help.A. helpB. having helped youC. have helpedD. have helped you2. The teacher their exercises.A. made the students doB. make the students doingC. have made the students doD. makes the students done3. He couldn’t hel p but when his toy car fell into the river.A. cryB. to cryC. cryingD. will cry4. Many things impossible in the past are common today.A. consideredB. to considerC. consideringD. being considered5. The noise of desks could be heard out in the street.A. being opened and closedB. be opened and closedC. opening and closingD. having opened and closed6. Never faith in himself, James Watt went on with his experiment.A. losingB. to loseC. lostD. to be lost7. There are four factories in our institute, over 100 workers.A. with each haveB. each havingC. each hasD. with each has over8. Many people favor more nuclear power plants.A. to buildB. builtC. buildD. building9. to the office was very slow this morning because of the traffic.A. To driveB. DrivingC. Being drivenD. I drove10. I would appreciate it a secret between us.A. you to keepB. that you would keepC. your keepingD. that you are keeping答案：1-5. DAAAA 6-10. ABDBCFor each sentence there are four choices marked A), B), C) andD). Choose the ONE answer that best completes the sentence.1. The government has devoted a larger part of its national ______ to agriculture than most other countries.A. resourcesB. potentialC. budgetD. economy2. In western countries, it is the ___ for men to wear suits on formal occasions.A. ConvictionB. ConventionC. ConfessionD. concession3. The annual income of school teachers in this place was _________ at $ 900.A. budgeB. predictedC. accountD. assessed4. His long illness and _____________ absence put him far behind in his study.A. sequentB. consequentC. frequentD. subsequent5. If you want to learn English, you must first find a ____________ teacher.A. ableB. desirableC. competentD. significant6. Jane was the only one who _______ all the conditions: she was of the required age, height and degree.A. fulfilledB. recoveredC. appreciatedD. rejected7. We ____ his idea for a music club, and decided to have an art club instead.A. turnedB. rejectedC. acceptedD. isolated8. I appreciate ________ herself to the cause of education.A. of her devotingB. her to devoteC. her devotingD. to devote9. It is most ________ that he attends the conference.A. desirousB. desiringC. desiredD. desirable10. The neighbors let their radio blare late in night just to ______ us.A. spitB. despiteC. spiteD. inspire答案：1-5 CBDBC 6-10 ABCDC11. She couldn’t hide her _______ at his foolish mistake.A. amusementB. fascinationC. HostilityD. recognition12. The publisher’s ______ of his manuscript depressed him.A. ejectionB. rejectionC. injectionD. dejection13. It is highly desirable that every effort _____to reduce pollution in Beijing.A. was madeB. be madeC. will be madeD. would be made14. He is an artist, so these economic terms are not familiar _________ him.A. withB. ofC. toD. on15. Happiness does not necessarily ________ wealth.A. go afterB. go withC. go onD. go out16. The police set a ____ to catch the thieves.A. planB. deviceC. trapD. trick17.A love marriage, however, does not necessarily _____much sharing of interests and responsibilities.A. take overB. result inC. hold onD. keep to18. Lightning in a _____of electrical current from a cloud to the ground or from one cloud to another.A. rushB. rainbowC. rackD. ribbon19. When he arrived, he found_______ the aged and the sick at home.A. none butB. none other thanC. nothing butD. no other20. The manager needs an assistant that he can ____ to take care of problems in his absence.A. count onB. count inC. count upD. count out答案：11-15 ABBCB 16-20 CBAAA。
科技英语翻译课后答案
科技英语翻译1.1 翻译的标准第1节翻译练习1The powerplantis the heartof a ship.The powerunit for drivin g the machin es is a 50-hp induct ion motor.动力装置是船舶的心脏。
驱动这些机器的动力装置是一台50马力的感应电动机。
第1节翻译练习2Semico nduct or device s, called transi stors, are replac ing tubesin many applic ation s.Crampe d condit ionsmeansthat passen gers’legscannot move around freely.All bodies are knownto posses s weight and occupy space.半导体装置也称为晶体管，在许多场合替代电子管。
我们知道，所有的物体都有重量并占据空间。
空间狭窄，旅客的两腿就不能自由活动。
第1节翻译练习3The remova l of minera ls from wateris called soften ing.A typica l foliag e leaf of a plantbelong ing to the dicoty ledon s is compos ed of two princi pal parts: bladeand petiol e.去除水中的矿物质叫做软化。
双子叶植物典型的营养叶由两个主要部分组成：叶片和叶柄。
1.2 对译者的要求第4节翻译练习1Einste in’srelati vitytheory is the only one whichcan explai n such phenom ena.All four (outerplanet s) probab ly have coresof metals, silica tes, and water.爱因斯坦的相对论是能解释这种现象的唯一理论。
科技英语试题(带答案)
I. Use of English1. —Good-bye and thank you very much for a wonderful time. —________A______. Hope to see you again.A. Thank you for your comingB. Not at allC. It was nothingD. Never mind2. —I’m sorry. I lost the key. —______A______A. Well, it’s OK.B. No, it’s all right.C. You are welcome.D. You are wrong.3. —I’m so sorry for stepping on your foot.— _____A_______.A. That’s all rightB. No, it’s my faultC. You didn’t hurt me at allD. Yes, don’t worry about it4. —Paul, ____B________? —Oh, that’s my father! And beside him, my mother.A. what is the person over thereB. who’s talking over thereC. what are they doingD. which is that5. —Could I speak to Don Watkins, please? —________C____A. I’m listeningB. Oh, how are you?C. Speaking, please.D. I’m Don.6. — Would you rather come on Friday or Saturday? — _______D_____A. Yes, of course.B. The other is better.C. What’s the mat ter?D. Either would suit me.7. —Would you mind if I turned the radio up？—_______B______.A. Yes, pleaseB. No, go aheadC. No, thank youD. Yes, that’ll be right8. —_____C_______ —He teaches physics in a school.A. What does your father want to do?B. Who is your father?C. What is your father?D. Where is your father now?9. — I wonder what the weather will be like tomorrow. — _____D_______A. I don’t like the weather at this time of the year.B. I don’t mind if it is going to rain tomorrow.C. Why read the newspaper yourself?D. Let’s listen to the weather report on the radio at ten.10. —Why didn’t you come to my birthday party yesterday?—_____D_______A. Excuse me, my friend sent me a flower.B. Fine, I never go to birthday parties.C. Ha…ha, I don’t like birthday parties.D. Sorry, but my wife had a car accident11. —Thank you for inviting me. —_______D_____A. I really had a happy time.B. Oh, it’s too lateC. Oh, so slowly?D. Thank you for coming12. — _____C_______. —It’s nothing to worry about. I never liked it anyway.A. I lost my walkman this morningB. I feel awful. I’ve got a coldC. I feel terrible, but I’ve left your tape somewhereD. I’m sorry, but we don’t have that medicine13. —We are going to London for holiday next week. Would you mind taking care of my garden while we’re away？—Not at all. ______C______.A. Sorry, I have no timeB. I’d rather notC. With pleasureD. No, I woul dn’t14. —_______B_____ —Well, they got there last Wednesday. So about a week.A. When did your parents arrive at Paris?B. How long have your parents been in Paris?C. Did your parents arrive at Paris last Wednesday?D. When will your parents go to Paris?15. — Do you feel like taking a walk in the park? — _____C_______.A. You may ask your brother to go, tooB. Yes, but I can’t afford the timeC. No, I’m really not in the mood for it this eveningD. No, I’d lik e it16. —Hi, welcome back! Had a nice trip? —______A______A. Oh, fantastic! Fresh air, and sunshine every day.B. Come on, I’ve got lots of fun.C. By the way, I don’t like Saturdays.D. Well, I’ll look forward to your phone call.17. —Oh, sorry to bother you. —______C______A. That’s good.B. No, you can’t.C. That’s Okay.D. Oh, I don’t know.18. — Jane: Tom, let me introduce you to Lucy. — Tom: ____B________ —Lucy: Hi, I’m Lucy Lee.A. What’s your name?B. Hello.C. Nice to see you.D. Sorry, not right now.19. —Would you like to have dinner with me this Saturday, Mr. Wang? —_______C________.A. Oh, no. Let’s notB. I’d rather stay at homeC. I’d love to, but I have a meeting that dayD. Thank you20. —How often do you go dancing? —______C______A. I will go dancing tomorrow.B. Yesterday.C. Every other day.D. I’ve been dancing for a year.21. —You’ve won the football game. Congratulations! — ______A______.A. It’s nice of you to say soB. We are really luckyC. No one else could do itD. Oh, not really22. —Marilyn, I’m afraid I have to be leaving now.—______B______A. That sounds wonderful.B. Oh, so early?C. Not at all.D. Good luck!23. —I was worried about my maths, but Mr. Brown gave me an A. —_____B_______A. Don’t worry about it.B. Congratulations! That’s a difficult course.C. Mr. Brown is very good.D. Good luck to you!24. — Wha t’s happened to my library books?— ______A______ .A. I’ve no ideaB. You borrowed them from the libraryC. You bought them yesterdayD. They’re about wild animals25. —Mike, I am going to skate in the mountains tomorrow. —Oh, really？_______C________.A. Good luckB. Thank youC. Have a good timeD. Congratulations26. —How about going to dinner at the Mexican restaurant tonight? —______C______A. Forget it.B. Sorry, I like Mexican food.C. That’s great!D. Glad you like it.27. — My children are always arguing. — _____A_______A. Just leave them alone.B. That’s right.C. Are you sure?D. How old are the boys?28. —I wonder if I could use your dictionary？—Sure. ______B_________.A. Go onB. Here you areC. Go upD. Here are you29. —Madam, do all the buses go downtown? —_______D_____A. Wow, you got the idea.B. No, never mind.C. Pretty well, I guess.D. Sorry, I’m new here.30. — Where is Tom this morning? —He’s got a cold.— ______A______A. Just tell him to take it easy.B. What’s the matter with him?C. He is absent.D. What? Where is he?II. Reading ComprehensionPassage 1Pigeons have been used as messengers for 500 years, because of their special ability to find home. The mystery of the homing pigeon is on how it navigates and how it finds home. We now know that there are two ways that pigeons tell directions. First, they use the sun. Just getting rough directions from the sun is easy. However, getting accurate directions from the sun takes more care. To tell direction accurately from the sun, one needs to know the exact time.All plants and animals seem to have built-in clocks. Usually these biological clocks are not quite exact in measuring time. However, they work pretty well, because they are “reset” every day, maybe when the sun gets up.Do pigeons use their biological clocks to help them find direction from the sun? We can experiment to find out. We can keep pigeons in a room lighted only by lamps. And we can time the lighting to make their artificial “days” start at some different time from the rea l outside day. After a while we have shifted their clocks. Now we take them far away from home and let them go on a sunny day. Most of them start out as if they know just which way to go, but choose a wrong direction. They have picked a direction that would be correct for the position of the sun and the time of day according to their shifted clocks.The above experiment shows that homing pigeons can tell directions by the sun. What happens when the sky is darkly overcast by clouds and no one can see where the sun is? The pigeons still find their way home. So it seems that pigeons also have some extra sense of direction from the earth’s magnetic field when they cannot see the sun.1. Pigeons have been used as messengers, for they have special ability ______B_______.A. to send lettersB. to find homeC. to carry food for menD. to lead the way for people2. The secret of the homing pigeons is ________B_____.A. how they find foodB. how they find homeC. how they take a letterD. how they take care of children3. All plants and animals reset their biological clocks when ________A______.A. the sun risesB. the sun setsC. the moon risesD. the moon sets4. The experiment tells us that the pigeons fly ____C__ because of the shifted biological clocks.A. in a wrong directionB. in a correct directionC. in all directionsD. in a circle5. Pigeons have ___C___ to tell the direction when it is cloudy by using the earth’s magnetic field.A. sharp eyesB. sensitive hearingC. sense of directionD. brain wavesPassage 2The speaker, a teacher from a community college, addressed a sympathetic audience. Heads nodded in agreement when he said, "High school English teachers are not doing their jobs." He described the inadequacies of his students, all high school graduates who can use language only at a grade 9 level. I was unable to determine from his answers to my questions how this grade 9 level had been established.My topic is not standards nor its decline (降低). What the speaker was really saying is that he is no longer young; he has been teaching for sixteen years, and is able to think and speak like a mature adult.My point is that the frequent complaint of one generation about the one immediately following it is inevitable. It is also human nature to look for the reasons for our dissatisfaction. Before English became a school subject in the late nineteenth century, it was difficult to find the target of the blame for language deficiencies (缺陷). But since then, English teachers have been under constant attack.The complainers think they have hit upon an original idea. As their own command of the language improves, they notice that young people do not have this same ability. Unaware that their own ability has developed through the years, they assume the new generation of young people must be hopeless in this respect. To the eyes and ears of sensitive adults the language of the young always seems inadequate.Since this concern about the decline and fall of the English language is not perceived as a generational phenomenon but rather as something new and peculiar to today's young people, it naturally follows that today's English teachers cannot be doing their jobs. Otherwise, young people would not commit offenses against the language.6. The speaker the author mentioned in the passage believed that __D___.A. the language of the younger generation is usually inferior to that of the older generationB. the students had a poor command of English because they didn't work hard enoughC. he was an excellent language teacher because he had been teaching English for sixteen yearsD. English teachers should be held responsible for the students' poor command of English7. In the author's opinion, the speaker ___B___.A. gave a correct judgment of the English level of the studentsB. had exaggerated the language problems of the studentsC. was right in saying that English teachers were not doing their jobsD. could think and speak intelligently8. The author's attitude towards the speaker's remarks is ___C___.A. neutralB. positiveC. criticalD. compromising9. It can be concluded from the passage that ___D___.A. it is justifiable to include English as a school subjectB. the author disagrees with the speaker over the stadard of English at Grade 9 levelC. English language teaching is by no means an easy jobD. Language improvement needs time and effort10. In the passage the author argues that ___A___.A. it is unfair to blame the English teachers for the language deficiencies of the studentsB. young people would not commit offences against the language if the teachers did their jobs properlyC. to eliminate language deficiencies one must have sensitive eyes and earsD. to improve the standard of English requires the effort of several generationsPassage 3Is there a “success personality”— some winning combination of qualities that leads almost inevitably to achievement? If so, exactly what is that secret success formula, and can anyone cultivate it?At the Gallup Organization we recently focused in depth on success, probing the attitudes and qualities of 1 500 prominent people selected at random from Who’s Who in America. Our research finds out a number of qualities that occur regularly among top achievers. Here is one of the most important, that is, common sense.Common sense is the most prevailing quality possessed by our respondents(回答者). Seventy-nine percent award themselves a top score in this category. And 61 percent say that common sense was very important in contributing to their success.To most, common sense means the ability to present sound, practical judgments on everyday affairs. To do this, one has to sweep aside extraneou s ideas and get right to the core of what matters. A Texas oil and gas businessman puts it this way: “The key ability for suc cess is simplifying. In conducting meetings and dealing with industry, reducing a complex problem to the simplest terms is highly i mportant.”Is common sense a quality a person is born with, or can you do something to increase it? The oil man’s answer is that common sense can definitely be developed. He attributes his to learning how to debate in school. Another way to increase your store of common sense is to observe it in others, learning from their — and your own — mistakes.Besides common sense, there are many other factors that influence success: knowing your field, self-reliance, intelligence, the ability to get things done, leadership, creativity, relationships with others, and of course, luck. But common sense stands out. If you cultivate these quali ties, you’ll succeed. And you might even find yourself listed in Who’s Who someday.11. It can be known from the passage that Who’s Who___C___.A. is a very useful book telling us how to succeedB. is a book providing us with the information about the family life of some famous peopleC. is a book providing us with the names and brief biographies of the top successful peopleD. is a book from which we can find out the names of different peoples in the world12. According to the author, common sense____B__.A. is something that common people like bestB. is something that enables one to form correct opinionsC. is a popular quality a person is born withD. is a quality that is possessed by common people13. The word“extraneous” in Paragraph 4 most probably means__D____.A. rightB. extraordinaryC. clearD. not related14. Which of the following is NOT mentioned as a factor for success? BA. Intelligence.B. Modesty.C. Creativity.D. Good luck.15. The passage is mainly concerned with___D___.A. organizational ability and good work habitsB. the way to obtain big profits and achieve fame and successC. knowledge and interest which are primary to successD. what successful people have in commonPassage 4Baekeland and Hartmann report that the “short sleepers” had been more or less average in their sleep needs until the men were in their teens. But at about age 15 or so, the men voluntarily began cutting down their nightly sleep time because of pressures from school, work, and other activities. These men tended to view their nightly periods of unconsciousness as bothersome interruptions in their daily routines.In general, these “short sleeps” appeared ambitious, active, energetic, cheerful, conformist(不动摇) in their opinions, and very sure about their career choices. They often held several jobs at once, or workers full-or part-time while going to school. And many of them had a strong urge to a ppear “normal” or “acceptable” to their friends and associates.When asked to recall their dreams, the “short sleepers” did poorly. More than this, they seemed to prefer not remembering. In similar fashion, their usual way of dealing with psychological problems was to deny that the problem existed, and then to keep busy in the hope that the trouble would go away.The sleep patterns of the “short sleepers” were similar to, but less extreme than, sleep patterns shown by many mental patients categorized as manic(疯人).The “long sleepers” were quite different indeed. Baekeland and Hartmann report that these young men had been lengthy sleeps since childhood. They seemed to enjoy their sleep, protected it, and were quite concerned when they were occasionally deprived of their desired 9 hours of nightly bed rest. They tended to recall their dreams much better than did the “short sleepers.”Many of the “long sleepers”were shy, anxious, introverted (内向), inhibited (压抑), passive, mildly depressed, and unsure of themselves (particularly in social situations). Several openly states that sleep was an escape from their daily problems.16. According to the report,___D___.A. many short sleepers need less sleep by natureB. many short sleepers are obliged to reduce their nightly sleep time because they are busy with their workC. long sleepers sleep a longer period of time during the dayD. many long sleepers preserve their sleeping habit formed during their childhood17. Many “short sleepers”are likely to hold the view that __C___.A. sleep is a withdrawal from the realityB. sleep interferes with their sound judgementC. sleep is the least expensive item on their routine programD. sleep is the best way to deal with psychological troubles18. It is stated in the third paragraph that short sleepers __B___.A. are ideally vigorous even under the pressures of lifeB. often neglect the consequences of inadequate sleepC. do not know how to relax properlyD. are more unlikely to run into mental problems19. When sometimes they cannot enjoy adequate sleep, the long sleepers might __A__.A. appear disturbedB. become energeticC. feel dissatisfiedD. be extremely depressed20. Which of the following is Not included in the passage? BA. If one sleeps inadequately, his performance suffers and his memory is weakenedB. The sleep patterns of short sleepers are exactly the sane as those shown by many mental patientsC. Long and short sleepers differ in their attitudes towards sleepD. Short sleepers would be better off with more restPassage 5Not so long ago almost any student who successfully completes a university degree or diploma course could find a good career quite easily. However, those days are gone, even in Hong Kong, and nowadays graduates often face strong competition in the search for jobs.Job seekers first have to make a careful assessment of their own abilities. One area of assessment should be of their academic qualifications, which would include special skills within their subject area. Graduates should also consider their own personal values and attitudes, or the relative importance to themselves of such matters as money, security, leadership and caring for others.The second stage is to study the opportunities available for employment and to think about how the general employment situation is likely to develop in the future. After studying all the various options, they should be in a position to make informed comparisons between various careers.Job application forms and letters should, of course, be filled in carefully and correctly, without grammar or spelling errors.When graduates are asked to attend for interview, they should prepare properly by finding out all they can about the prospective employer. Dressing suitably and arriving for the interview on time are also obviously important. Interviewees should try to give positive and helpful answers and should not be afraid to ask questions about anything they are unsure about. This is much better than pretending to understand a question and giving an unsuitable answer.There will always be good career opportunities for people with ability, skills and determination; the secret to securing a good job to be one of them.21. In Paragraph 1, the sentence “… those days are gone, even in Hong Kong…” suggest that ___D___.A. Hong Kong is no longer the good place for finding jobsB. nowadays, everyone in Hong Kong has an equal chance of finding a good careerC. it used to be harder to find a good job in Hong Kong than in other countries.D. in the past, finding a good career was easier in Hong Kong than elsewhere22. The word “relative” in Paragraph 2 could best be replaced by “______B____”.A. familyB. comparativeC. considerateD. slight23. The advice given in the first sentence of Paragraph 3 is to ______B_____.A. find out what jobs are available and the opportunities for future promotionB. examine the careers available and how these will be affected in the futureC. look at the information on and probable future location of various careersD. study the opportunities and the kinds of training that will be available24. The word “prospective” in Paragraph 5 is closest in meaning to “___C____”.A. generousB. reasonableC. futureD. ambitious25. In paragraph 5, the writer seems to suggest that _____C___.A. interviewees should ask a question if they can’t think of an answerB. pretending to understand a question is better than giving an unsuitable answerC. it is better for interviewees to be honest than to pretend to understandD. it is not a good idea for interviewees to be completely honest in their answersPassage 6Some people believe that international sport creates goodwill between the nations and that if countries play games together they will learn to live together. Others say that the opposite is true: those international contests encourage false national pride and lead to misunderstanding and hatred. There is probably some truth in both arguments, but in recent years the Olympic Games have done little to support the view that sports encourage international brotherhood. Not only was there the tragic incident involving the murder of athletes, but the Games were also ruined by lesser incidents caused principally by minor national contests.One country received its second-place medals with visible indignation after the hockey final. There had been noisy scenes at the end of the hockey match, the losers objecting to final decisions. They were convinced that one of their goals should not have been disallowed and that their opponents’ victory was unfair. Their manager was in a rage when he said, “This wasn’t hockey. Hockey and the International Hockey Federation are finished.” The president of the Federation said later that such behavior could result in the suspension of the team for at le ast two years.The American basketball team announced that they would not yield first place to Russia, after a disputable end to their contest. The game had ended in disturbance. It was thought at first that the United States had won, by a single point, but it was announced that there were three seconds still to play. A Russian player then threw the ball from one end of the court to the other, and another player popped it into basket. It was the first time the USA had ever lost an Olympic basketball match. An appeal jury debated the matter for four and a half hours before announcing that the result would stand. The American players then voted for not to receive the silver medals.Incidents of this kind will continue as long as sport is played competitively rather than for the love of the game. The suggestion that athletes should compete as individuals, or in non-national team, might be too much to hope for. But in the present organization of the Olympics there is far too much that encourages aggressive patriotism.26. According to the author, recent Olympic Games have _____C_____.A. created good will between the nationsB. bred only false national prideC. barely showed any international friendshipD. led to more and more misunderstanding and hatred27. What did the mana ger mean by saying “… Hockey and the International Hockey Federation are finished.”BA. His team would no longer take part in the international games.B. Hockey and the Federation are both ruined by the unfair decisions.C. There should be no more hockey matches organized by the Federation.D. The Federation should be dissolved.28. The basketball example implied that ______A_____.A. too much patriotism was displayed in the incident.B. the announcement to prolong the match was wrongC. The appeal jury was too hesitant in making the decisionD. the American team was right in rejecting the silver medals29. The author gives the two examples in Paragraph 2 and 3 to show ____C____.A. how false national pride led to undesirable incidents in international gamesB. that sportsmen have been more obedient than they used to beC. that competitiveness in the games discourages international friendshipD. that unfair decisions are common in Olympic Games30. What conclusion can be drawn from the passage?DA. International contests are liable for misunderstanding between nations.B. Athletes should compete as individuals in the Olympic Games.C. Sport should be played competitively rather than for the love of the game.D. The organization of the Olympic Games must be improved.III. Vocabulary and Structure1. It is just as hard to persuade my wife not to dance _B___ to keep me from the football field.A. so it isB. as it isC. so is itD. as is it2. The committee ___B___ different opinions about the financial help given to the workers.A. hasB. haveC. havingD. having had3. Nothing is ___A__ time; yet nothing is less valued.A. more precious thanB. less precious thanC. most preciousD. as precious as4. ____A__ you’ve got a chance, you might as well make full use of it.A. Now thatB. AfterC. AlthoughD. As soon as5. Not only I but also Jane and Mary ____B__ tired of having one examination after another.A. isB. areC. amD. be6. The child felt there was no one he could turn __A____ with his problem.A. toB. forC. onD. at7. __A__ from the top of the mountain, the whole city looks beautiful.A. SeenB. SeeingC. SeeD. Looked8. Traveling abroad will broaden your ____ C__ and help you to understand the world.A. rangeB. sightC. horizonD. vision9. In all English towns there is a speed limit of 30 miles an hour, __B___?A. is thereB. isn’t thereC. is itD. isn’t it10. No sooner had he left ____B___ the police arrived.A. whenB. thanC. thenD. before11. __D__ the expense, I ____ a round-the-world tour.A. Were it not … would takeB. If it were not… takeC. Weren’t it for… will takeD. If it hadn’t been for… w ould have taken12. As a part-time job, I worked in a small beachside restaurant during the college __C____.A. scopeB. scheduleC. vacationD. vocation13. The mountain village is my hometown. I spent __C___ merry night there when I was young.A. a great manyB. plenty ofC. many aD. a great deal14. ___B___ the cold wind, they went out without their coats.A. DespiteB. In spiteC. AlthoughD. Unless15.Ellis Haizlip began his stage career in Washington, D.C., _D__ supervised the Howard University Players during their summer season.A. he wasB. where he was C .which he D. where he16. Never before __A____ won gold medals in the Olympic Games.A. have so many Chinese athletesB. so many Chinese athletes haveC. have such many Chinese athletesD. such many Chinese athletes have17. Those ___A__ to go to the exhibition should inform the office.A. not wantingB. who not wantC. not wantedD. are not want18. What did the teacher ___C___ us to do tonight as our homework?A. allowB. permitC. assignD. resign19. __C__ impressed the visitors deeply was ____ the workers made with their hands.A. What…thatB. That…thatC. What…whatD. That…what20. People of ___B___ backgrounds applied for the job.A. manyB. variousC. variableD. a lot of21. __C___ scenery in national parks is usually attractive.A. AB. AnC. TheD. One22. They felt inferior __D____ the others until the team’s international success made them proud of themse lves.A. thanB. forC. withD. to。
科技英语教材 第 1 至 4 章 练习答案
参考答案第1章第1节翻译的标准第1节翻译练习11．动力装置是船舶的心脏。
(英语中一词多义的现象很普遍，翻译时要根据上下文判断多义词的准确含义，尤其是在翻译科技英语时，一定要选用恰当的中文词汇。
plant一词含义很多，但在此句中应该是“设备，装置”的意思。
)2．驱动这些机器的动力装置是一台50马力的感应电动机。
(该句也存在英语中一词多义的现象。
unit一词含义很多，但在此句中应该是“装置”而不是”单元”的意思。
)第1节翻译练习21．半导体装置也称为晶体管，在许多应用中替代电子管。
(不好)半导体器件也称为晶体管，在许多场合替代电子管。
(较好)2．狭窄的条件就意味着旅客的腿不能自由活动。
(不好)空间狭窄，旅客的两腿就不能自由活动。
(较好)3．所有物体被知道具有重量并占据空间。
(不好)我们知道，所有的物体都有重量并占据空间。
(较好)第1节翻译练习31．从水中把矿物质去除被叫做软化。
(欠佳)去除水中的矿物质叫做软化。
(简洁)2．属于双子叶的植物的典型的营养叶由两个主要部分组成：叶片和叶柄。
(欠佳) 双子叶植物典型的营养叶由两个主要部分组成：叶片和叶柄。
(简洁)第4节翻译的一般方法第4节翻译练习11．爱因斯坦的相对论是能解释这种现象的唯一的理论。
(直译)2．这四颗外层行星的内核可能都由金属，硅酸盐和水构成。
(意译)3．设计师必须备有所使用材料的储备表。
(意译)4．要使印刷品的质量达到要求，部件调试及修理就必须定期进行。
(意译)第4节翻译练习21．植物生长的各因素中最重要的是水的供应。
(合译)2．医生对血样作了分析，看是不是贫血症。
(分译)3．太阳的大小看起来有变化．这是由于靠近地平线的空气中有尘粒而引起的。
(分译) 4．这些石块和铁块的碎片大小不等，大的直径有1，000公里，小的不到1公里。
(分译) 5．制造过程可以分为单件生产和大量生产。
前者指的是生产少量的零件，后者则是指生产大量相同的零件。
(分译)第4节翻译练习31.制图学是研究绘制地图的科学。
科技英语试题及答案
科技英语试题及答案一、选择题（每题2分，共20分）1. The term "nanotechnology" refers to the manipulation of matter on an atomic, molecular, and supramolecular scale.A. TrueB. False2. Which of the following is NOT a characteristic of renewable energy sources?A. Infinite in supplyB. Environmentally friendlyC. Dependent on weather conditionsD. Non-renewable3. The process of converting solar energy into electrical energy is known as:A. SolarizationB. Photovoltaic effectC. Solar distillationD. Thermal radiation4. In the context of computer science, what does "AI" stand for?A. Artificial IntelligenceB. Advanced InterfaceC. Automated InputD. Application Interface5. The term "genome" is associated with:A. The complete set of genes in an organismB. The structure of a cellC. The study of geneticsD. The process of cell division6. What is the primary function of a transistor in an electronic circuit?A. To amplify signalsB. To store dataC. To convert light into electricityD. To filter signals7. The "Internet of Things" (IoT) refers to:A. A network of interconnected devicesB. The global network of computersC. A collection of internet protocolsD. The study of internet security8. Which of the following is a type of biotechnology?A. Genetic engineeringB. Quantum computingC. NanolithographyD. Nuclear fusion9. The "Greenhouse Effect" is related to:A. The warming of the Earth's surfaceB. The cooling of the Earth's surfaceC. The process of photosynthesisD. The formation of the ozone layer10. What does "CRISPR" stand for in the field of molecular biology?A. Clustered Regularly Interspaced Short Palindromic RepeatsB. Computer-Aided Research in Scientific ProjectsC. Comprehensive Research in Innovative ScienceD. Computational Research in Systematic Processes二、填空题（每题1分，共10分）1. The unit of electrical resistance is the ______.2. The process of converting sound waves into electrical signals is known as ______.3. In physics, the term "entropy" is used to describe the level of ______ in a system.4. The study of the chemical composition of planets is known as ______.5. The term "cybersecurity" refers to the protection of______ from cyber threats.6. The process of converting electrical energy into light is known as ______.7. The smallest unit of life that can replicate itself is called a ______.8. The process of creating new substances from existing ones is known as ______.9. The study of the structure and function of cells is known as ______.10. The process of converting light energy into chemical energy is known as ______.三、简答题（每题5分，共30分）1. Explain the concept of "machine learning" in artificialintelligence.2. Describe the role of a semiconductor in modern electronics.3. What is the significance of biodiversity in the context of environmental science?4. Discuss the potential impact of nanotechnology on medicine.四、论述题（共40分）1. Discuss the ethical considerations involved in the development and use of genetic engineering technologies. (20分)2. Analyze the potential benefits and challenges of implementing a global Internet of Things (IoT) network. (20分)答案：一、选择题1. A2. D3. B4. A5. A6. A7. A8. A9. A10. A二、填空题1. ohm2. transduction3. disorder4. cosmochemistry5. information systems6. electroluminescence7. cell8. synthesis9. cytology10. photosynthesis三、简答题1. Machine learning is a subset of artificial intelligence that enables computers to learn from and make decisions based on data, improving at tasks over time through experience without being explicitly programmed.2. Semiconductors are materials with electrical conductivity between that of a conductor and an insulator. They arecrucial in electronic devices like transistors and diodes, allowing for the control of electrical current and the amplification of signals.3. Biodiversity is significant in environmental science as it ensures the stability of ecosystems, supports ecological processes, and provides a variety of services and resources that are vital for human survival and well-being.4. Nanotechnology has the potential to。
九年级英语科技练习题40题含答案解析
九年级英语科技练习题40题含答案解析1.The new smart phone has a large _____.A.screenB.keyboardC.mouseD.printer答案解析：A。
“screen”是屏幕，新智能手机有大的屏幕。
“keyboard”是键盘，“mouse”是鼠标，“printer”是打印机，都不符合智能手机的特征。
2.Many people use ______ to listen to music.A.radiosB.televisionsputersD.headphones答案解析：D。
“headphones”是耳机，很多人用耳机听音乐。
“radios”是收音机，“televisions”是电视，“computers”是电脑，虽然也可以听音乐，但不如耳机直接。
3.The latest technology allows us to store a large amount of data on a _____.A.diskB.penC.paper答案解析：A。
“disk”是磁盘，可以存储大量数据。
“pen”是笔，“paper”是纸，“book”是书，都不能存储大量数据。
4.With the development of technology, we can communicate with people all over the world through _____.A.lettersB.telephonesC.emailsD.maps答案解析：C。
“emails”是电子邮件，随着科技发展，我们可以通过电子邮件和全世界的人交流。
“letters”是信件，速度慢；“telephones”是电话，但不能和全世界所有人交流；“maps”是地图，与交流无关。
5.Scientists are working on a new kind of energy-saving _____.A.light bulbB.clockC.cupD.chair答案解析：A。
科技英语课后练习答案
科技英语课后练习答案Unit 1 练习答案及课文译文Part 2 Reading AI1 F2 T3F 4T5T 6.F 7.T 8.T 9.F 10.TII1. Reducing the time and cost of product development and production.2. The product cycle is composed of two main processes：the design process and the manufacturing process．3. The activities involved in the design process can be classified largely as two types：synthesis and analysis．4. Rapid prototyping is becoming popular because this technology enables the construction of a prototype by deposition layers from the bottom to the top．5. This includes the preparation of drawings，reports，and bills of materials.III1.d2.e3.b4.j5.i6.c7.f8.h9.g 10.aIV1.处理速度2.用户友好的交互图形3. 产品周期4. 设计规格5. 设计评价6.CAD7.CAM8.CAE9.design process 10.production processUnit 3Part 2 Reading AⅠ Mark the following statements with T(true ) or F (false) according to the passage.1.F2.T3.F4.F5.T6.F7.T8.T9.F 10.FⅡGive brief answers to the following questio ns.1. Nissan will unveil a new city car ,the pixo and a battery-electric concept car2. Pixo is available with manual or automatic transmissions.3. Sales start from late spring 2009.4. The NuVu battery pack uses new laminated lithium-ion cells with a capacity of 140 wh/kg .5.There are no door mirrors to disturb the airflow.Ⅲ Match the items listed in the following two columns.1-5 j f d c g6-10 e I h b aⅣ Translate the following expressions.1.手动或自动挡2.内部设计3.薄板锂离子电池4.太阳能电池板5.头尾灯6 concept car7. Horse power8. test bed9. battery pack10. turning circleⅤTranslate the following sentences into Chinese.1. 尼桑推出了一种新产品—城市汽车Pixo和一款电力驱动的概念车—NuVu，预示了尼桑未来的重点会放在电力驱动车上。
科技英语课后题答案
答案：答案：练习1：1. A rocket is made of metal.2. A battery is a device that gives a constant voltage.3. What a good computer (it is)！ How good a computer (it is)!4. In a computer, the tendency is to operate as high a clock rate as possible.5. A body must be made to move, or no work will be done.6. This railroad is 6 times longer than that one.7. Ordinary windows cannot withstand so large a force.8. This value is one third what it was.9. This is too complicated a problem for us to go into here.10. It will take a computer half an hour to solve this problem.练习2：1. We obtained this result with great ease.2. There are many instruments in common use.3. Forces are measured in newtons.4. The concept of gravity will be introduced in the next section.5. Of the first three chapters, the first one introduces nuclear energy.6. These two values differ by 5.7. This new device has many advantages over those old ones.8. We need to solve these equations for those unknowns.9. In everyday life, forces seem to be transmitted only by 9. In everyday life, forces seem to be transmitted only by ““direct contact direct contact””.10. This result looks correct.11 . This point cannot be overemphasized. 12. Their distance apart is very small.练习3：1. This quantity of information is approximately proportional to the range of frequencies usable/ available.2. All the chemistry textbooks available mention this phenomenon.3.In a normal atom, the number of protons is equal to the number of electrons present.4.In this paper there is nothing special.5. In this case the signal waveform can be transmitted undistorted.6. The rays of the sun reach the earth almost parallel.7. This is a positive number larger than 1.8. Such sequences must have a limit either finite or infinite.9. This method can be used to handle problems too complex to be solved by inspection.10. All systems, living and mechanical, are (both) information and feedback control systems.11. Simple in structure and low in price, this machine is warmly received by users.12. Contrary to common belief, Dr.Gordon was not the first to use the metal. 13. The ball is moving parallel to the table 13. The ball is moving parallel to the table’’s surface.14. This circuit operates similar to a counter.15. This is a straight ling 5 meters long.练习4：1. One of the advantages of these new devices over the old ones is their small size.2. Because of its great importance, this circuit will be discussed in detail later.4. Our discussion of this topic will be presented in the next chapter.6. The density of water is higher than that of ice.7. By efficiency one means the ratio of output to input.9. These results are in agreement with the experimental ones.10. These computers are similar to those in our labortory.练习51. This is any constant not zero.6. These devices have been factory calibrated accurately.11. These measurements must be made at many frequencies, a rather time-consuming and tedious task.13. This method has an advantage over that of example 2.17. The variation of speed with time is shown in Fig. 6-6.练习73. The stationary electric charge can never interact with a magnet.4. Eq. (5-18) cannot be satisfied for all values of x and t.5. None of the textbooks available have mentioned this problem.7. This instrument does not appear to be good as that one.9. This figure indicates that the speed of light is not infinite as many people believed at that time.10. These rules are not valid for all types of circuits.练习8：2. The better one knows C, the harder it seems to be to avoid writing C ++ in C style3. In a well-designed instrument, R4 may be as high as 105. In this case, switch resistance is much less important.8. The whale 8. The whale’’s body is a thousand times heavier than its brain, while the elephant s body is a thousand times heavier than its brain, while the elephant’’s body is about 5 hundred times as heavy.9. There are probably as many different techniques as there are service men.练习9：1. In recent years, they have been designing a new kind of product.2. We discussed this problem briefly in chapter 1.3. That aircraft is being assembled.4. It has been/ is more than 10years since this professor became an academician.5. By the end of this year, these engineers will have worked in this research institute for 20years.6. The world is always changing.7. Up to now, we have been concerned only with the motion of particles.8. This is the first time they have ever developed this new kind of computer.9. A few years ago, the NASA said that they would establish a space factory.10. That chief physician told us that his research group had found a new kind of virus.练习练习10： 1. Full use should be made of the computers available.or: The computer available should be made full use of. 2. Each point is assigned a number.3. Now we are told that I is proportional to V .4. Nonlinear equations will be discussed in chapter5.5. This stone is being acted on by 3 forces.6. The reader may not be convinced that this is true.练习11：2. To deform anything requires a force.3. To do work is to move a body through a distance.5. In this laboratory there are many devices for students to choose from.7. This case is particularly simple to analyze.8. It requires much time and effort for scientific knowledge to be applied to the practical affairs of life.9. There are wide differences in the ability of various substances to conduct heat.10. Gravity is the tendency of all objects to attract each other.11. This unit determines which of these operations to perform.12. In some experiments, you will be told what to measure and what instruments to use.练习12：对比对比 练习11第一题：第一题：All matter is found to be composed of atoms or molecules.Ⅲ1. This is a device consisting f five parts.2. Resistance equals voltage divided by current.3. Flowing through a circuit, the current will meet some opposition.4. Expressed in a formula, this law can be written as follows.5. This battery, properly used, may last for a long time.6. A force can be resolved into two components, one of them (being) vertical and the other horizontal.Ⅳ1. Let us construct, with the origin as center, a circle of radius R.2. A tiny nucleus is at the center of the atom, with its electrons some distance away.3. With no friction present, energy would not be lost.4. This device was designed with security in mind.5. The equations with V proportional to F can be solved this way.6. A keyboard is the device with buttons on it.练习13：1. There are many ways of generating electricity.4. Upon/ On rearranging the above equations, we obtain the following set of equations.5. In using the above equation, attention must be paid to the sign.6. Compressing a gas quickly raises its temperature.8. The more crowded the conditions, the greater the chances of epidemics breaking out.练习17：1. It is necessary to know what units are used for measuring the quantity of heat.2. This book tells the reader what electric circuits are and what we do with them.4. Force is what makes bodies move.5. What this chapter describes is extremely important.7. This concept will be introduced in what the author hopes is a clear and concise manner.9. What we call the weight of a body is really the attractive force which the earth exerts on the body. 10. The current in this branch has become 10 times what it was.练习182. There is almost no natural science but requires mathematics.4. It is unfortunate that early cancer is painless; otherwise, cancer would not be the problem (that) it is.9. Faraday was the scientist who discovered electromagnetic induction.10. Gain is the number of times an amplifier amplifies a signal.练习19：1. These two laws are the foundation on which all other laws in electricity are built.6. They derived an equation, the solution to which is very simple.8. The author would like to thank the editors of the series of which this book is a part.练习20：1. We can let the x-axis coincide with one of the forces, which will simplify the problem.5. As the name shows, a conductor is the substance that conducts electric current.6. This resulted in the creation of 6. This resulted in the creation of ““high-speed mechanics high-speed mechanics””, or as it is called relativistic mechanics.7. The result is as shown in Fig. 2.练习22：1. There does exist water on that planet.2. It is not clear by what method it is that this equation can be solved.4. It is this advantage of the device with which we are concerned.5. It may well be this flaw that often leads to the failure of that computer.6. It is what this paper describes that has attracted many readers.练习23：3. Below / Here is a table of conductivities of some metals we are familiar with.6. Shown in Fig. 1-1 is a block diagram of a digital computer.7. By speed is meant the ratio of distance to time.9. This problem we shall discuss in detail later.10. By no means do ions move in a wire.练习24：3. It is necessary to find the current through and the voltage across the capacitor.5. This value is less than or equal to unity.6. No matter how high the density, solar matter can be considered as an ideal gas.7.Different emf’’s result in potential gradients. hence electric fields.7.Different emf。
科技英语部分课后答案Exercise 4
Exercise 4II 将句子译成汉语，注意句中or的不同词义silver conducts current more easily than other conductors. Or we say that silver conducts current most easily.银比其它导体更易传导电流。
或者我们说银最易传导电流。
The light produced by a laser is essentially of one color, i.e., of one frequency, or one wave length.激光器所产生的光线基本上是一种颜色。
即属一个频率，或一种波长。
Computers can do （at a very high speed 谓语do的状语）（the calculations 宾语）（too complicated 宾语的定语）（for a man to do in a few days or even in a few years 定语的状语）.计算机能以很高的速度，执行各种太复杂而无法由人在若干天内甚至若干年内实施的计算。
III 将句子译成汉语，注意take的不同词义Great changes are taking place in every field of science and technology in China.在中国的科技各领域，正发生着巨大的变化。
Air takes the blue light from sunlight.空气从太阳光中截取蓝光If scientists measure the time for a laser beam to take to go to the moon and come back, they can calculate the distance from the earth to the moon.如果科学家测量激光束往返月球所花费的时间，他们能计算自地球至月球的距离。
科技英语试题带答案精修订
科技英语试题带答案 SANY标准化小组 #QS8QHH-HHGX8Q8-GNHHJ8-HHMHGN#I.U s e o f E n g l i s h1. —Good-bye and thank you very much for a wonderful time. —________A______. Hope to see you again.A. Thank you for your comingB. Not at allC. It was nothingD. Never mind2. —I’m sorry. I lost the key. —______A______A. Well, it’s OK.B. No, it’s all right.C. You are welcome.D. You are wrong.3. —I’m so sorry for stepping on your foot.— _____A_______.A. That’s all rightB. No, it’s my faultC. You didn’t hurt me at allD. Yes, don’t worry about it4. —Paul, ____B________—Oh, that’s my father! And beside him, my mother.A. what is the person over thereB. who’s tal king over thereC. what are they doingD. which is that5. —Could I speak to Don Watkins, please? —________C____A. I’m listeningB. Oh, how are you?C. Speaking, please.D. I’m Don.6. — Would you rather come on Friday or Saturday? — _______D_____A. Yes, of course.B. The other is better.C. What’s the matter?D. Either would suit me.7. —Would you mind if I turned the radio up —_______B______.A. Yes, pleaseB. No, go aheadC. No, thank youD. Yes, that’ll be right8. —_____C_______ —He teaches physics in a school.A. What does your father want to do?B. Who is your father?C. What is your father?D. Where is your father now?9. — I wonder what the weather will be like tomorrow. —_____D_______A. I don’t li ke the weather at this time of the year.B. I don’t mind if it is going to rain tomorrow.C. Why read the newspaper yourself?D. Let’s listen to the weather report on the radio at ten.10. —Why didn’t you come to my birthday party yesterday?—_____D_______A. Excuse me, my friend sent me a flower.B. Fine, I never go to birthday parties.C. Ha…ha, I don’t like birthday parties.D. Sorry, but my wife had a car accident11. —Thank you for inviting me. —_______D_____A. I really had a happy time.B. Oh, it’s too lateC. Oh, so slowly?D. Thank you for coming12. — _____C_______. —It’s nothing to worry about. I never liked it anyway.A. I lost my walkman this morningB. I feel awful. I’ve got a coldC. I feel terrible, but I’ve left your tape somewhereD. I’m sorry, but we don’t have that medicine13. —We are going to London for holiday next week. Would you mind taking care of my garden while we’re away—Not at all. ______C______.A. Sorry, I have no timeB. I’d rather notC. With pleasureD. No, I wouldn’t14. —_______B_____ —Well, they got there last Wednesday. So about a week.A. When did your parents arrive at Paris?B. How long have your parents been in Paris?C. Did your parents arrive at Paris last Wednesday?D. When will your parents go to Paris?15. — Do you feel like taking a walk in the park— _____C_______.A. You may ask your brother to go, tooB. Yes, but I can’t afford the timeC. No, I’m really not in the mood for it this eveningD. No, I’d like it16. —Hi, welcome back! Had a nice trip? —______A______A. Oh, fantastic! Fresh air, and sunshine every day.B. Come on, I’ve got lots of fun.C. By the way, I don’t like Saturdays.D. Well, I’ll loo k forward to your phone call.17. —Oh, sorry to bother you. —______C______A. That’s good.B. No, you can’t.C. That’s Okay.D. Oh, I don’t know.18. — Jane: Tom, let me introduce you to Lucy. — Tom: ____B________ —Lucy: Hi, I’m Lucy Lee.A. What’s your nameB. Hello.C. Nice to see you.D. Sorry, not right now.19. —Would you like to have dinner with me this Saturday, Mr. Wang? —_______C________.A. Oh, no. Let’s notB. I’d rather stay at homeC. I’d love to, but I have a meeting that dayD. Thank you?20. —How often do you go dancing? —______C______A. I will go dancing tomorrow.B. Yesterday.C. Every other day.D. I’ve been dancing for a year.21. —You’ve won the football game. Congratulations!— ______A______.A. It’s nice of you to say soB. We are really luckyC. No one else could do itD. Oh, not really22. —Marilyn, I’m afraid I have to be leaving now.—______B______A. That sounds wonderful.B. Oh, so early?C. Not at all.D. Good luck!23. —I was worried about my maths, but Mr. Brown gave me an A. —_____B_______A. Don’t worry about it.B. Congratulations! That’s a difficult course.C. Mr. Brown is very good.D. Good luck to you!24. —What’s hap pened to my library books? — ______A______ .A. I’ve no ideaB. You borrowed them from the libraryC. You bought them yesterdayD. They’re about wild animals25. —Mike, I am going to skate in the mountains tomorrow. —Oh, really _______C________.A. Good luckB. Thank youC. Have a good timeD. Congratulations26. —How about going to dinner at the Mexican restaurant tonight? —______C______A. Forget it.B. Sorry, I like Mexican food.C. That’s great!D. Glad you like it.27. — My children are always arguing. — _____A_______A. Just leave them alone.B. That’s right.C. Are you sure?D. How old are the boys?28. —I wonder if I could use your dictionary —Sure.______B_________.A. Go onB. Here you areC. Go upD. Here are you29. —Madam, do all the buses go downtown? —_______D_____A. Wow, you got the idea.B. No, never mind.C. Pretty well, I guess.D. Sorry, I’m new here.30. — Where is Tom this morning? — H e’s got a cold.—______A______A. Just tell him to take it easy.B. What’s the matter with him?C. He is absent.D. What Where is heII. Reading ComprehensionPassage 1Pigeons have been used as messengers for 500 years, because of their special ability to find home. The mystery of the homing pigeon is on how it navigates and how it finds home. We now know that there are two ways that pigeons tell directions. First, they use the sun. Just getting rough directions from the sun is easy. However, getting accurate directions from the sun takes more care. To tell direction accurately from the sun, one needs to know the exact time.All plants and animals seem to have built-in clocks. Usually these biological clocks are not quite exact in measuring time. However, they work pretty well, because they are “reset” every day, maybe when the sun gets up.Do pigeons use their biological clocks to help them find direction from the sun We can experiment to find out. We can keep pigeons in a room lighted only by lamps. And we can time the lighting to make their artificial “days” start at some different time fr om the real outside day. After a while we have shifted their clocks. Now we take them far away from home and let them go on a sunny day. Most of them start out asif they know just which way to go, but choose a wrong direction. They have picked a direction that would be correct for the position of the sun and the time of day according to their shifted clocks.The above experiment shows that homing pigeons can tell directions by the sun. What happens when the sky is darkly overcast by clouds and no one can see where the sun is The pigeons still find their way home. Soit seems that pigeons also have some extra sense of direction from the earth’s magnetic field when they cannot see the sun.1. Pigeons have been used as messengers, for they have special ability ______B_______.A. to send lettersB. to find homeC. to carry food for menD. to lead the way for people2. The secret of the homing pigeons is ________B_____.A. how they find foodB. how they find homeC. how they take a letterD. how they take care of children3. All plants and animals reset their biological clocks when________A______.A. the sun risesB. the sun setsC. the moon risesD. the moon sets4. The experiment tells us that the pigeons fly ____C__ because of the shifted biological clocks.A. in a wrong directionB. in a correct directionC. in all directionsD. in a circle5. Pigeons have ___C___ to tell the direction when it is cloudy by using the earth’s magnetic field.A. sharp eyesB. sensitive hearingC. sense of directionD. brain wavesPassage 2The speaker, a teacher from a community college, addressed a sympathetic audience. Heads nodded in agreement when he said, "High school English teachers are not doing their jobs." He described the inadequacies of his students, all high school graduates who can use language only at a grade 9 level. I was unable to determine from his answers to my questions how this grade 9 level had been established.My topic is not standards nor its decline (降低). What the speaker was really saying is that he is no longer young; he has been teachingfor sixteen years, and is able to think and speak like a mature adult.My point is that the frequent complaint of one generation about the one immediately following it is inevitable. It is also human nature to look for the reasons for our dissatisfaction. Before English became a school subject in the late nineteenth century, it was difficult to find the target of the blame for language deficiencies (缺陷). But since then, English teachers have been under constant attack.The complainers think they have hit upon an original idea. As their own command of the language improves, they notice that young people donot have this same ability. Unaware that their own ability has developed through the years, they assume the new generation of young people mustbe hopeless in this respect. To the eyes and ears of sensitive adultsthe language of the young always seems inadequate.Since this concern about the decline and fall of the Englishlanguage is not perceived as a generational phenomenon but rather as something new and peculiar to today's young people, it naturally follows that today's English teachers cannot be doing their jobs. Otherwise, young people would not commit offenses against the language.6. The speaker the author mentioned in the passage believed that __D___.A. the language of the younger generation is usually inferior to that of the older generationB. the students had a poor command of English because they didn't work hard enoughC. he was an excellent language teacher because he had been teaching English for sixteen yearsD. English teachers should be held responsible for the students' poor command of English7. In the author's opinion, the speaker ___B___.A. gave a correct judgment of the English level of the studentsB. had exaggerated the language problems of the studentsC. was right in saying that English teachers were not doing their jobsD. could think and speak intelligently8. The author's attitude towards the speaker's remarks is ___C___.A. neutralB. positiveC. criticalD. compromising9. It can be concluded from the passage that ___D___.A. it is justifiable to include English as a school subjectB. the author disagrees with the speaker over the stadard of English at Grade 9 levelC. English language teaching is by no means an easy jobD. Language improvement needs time and effort10. In the passage the author argues that ___A___.A. it is unfair to blame the English teachers for the language deficiencies of the studentsB. young people would not commit offences against the language if the teachers did their jobs properlyC. to eliminate language deficiencies one must have sensitive eyes and earsD. to improve the standard of English requires the effort of several generationsPassage 3Is there a “success personality”— some winning combination of qualities that leads almost inevitably to achievement If so, exactly what is that secret success formula, and can anyone cultivate itAt the Gallup Organization we recently focused in depth on success, probing the attitudes and qualities of 1 500 prominent people selected at random from Who’s Who in America. Our res earch finds out a number of qualities that occur regularly among top achievers. Here is one of the most important, that is, common sense.Common sense is the most prevailing quality possessed by our respondents(回答者). Seventy-nine percent award themselves a top scorein this category. And 61 percent say that common sense was very important in contributing to their success.To most, common sense means the ability to present sound, practical judgments on everyday affairs. To do this, one has to sweep aside extraneous ideas and get right to the core of what matters. A Texas oil and gas businessman puts it this way: “The key ability for success is simplifying. In conducting meetings and dealing with industry, reducing a complex problem to the simplest terms is hi ghly important.”Is common sense a quality a person is born with, or can you do something to increase it The oil man’s answer is that common sense can definitely be developed. He attributes his to learning how to debate in school. Another way to increase your store of common sense is to observe it in others, learning from their — and your own — mistakes.Besides common sense, there are many other factors that influence success: knowing your field, self-reliance, intelligence, the ability to get things done, leadership, creativity, relationships with others, and of course, luck. But common sense stands out. If you cultivate these qualities, you’ll succeed. And you might even find yourself listed in Who’s Who someday.11. It can be known from the passage that Who’s Who___C___.A. is a very useful book telling us how to succeedB. is a book providing us with the information about the family life of some famous peopleC. is a book providing us with the names and brief biographies of the top successful peopleD. is a book from which we can find out the names of different peoples in the world12. According to the author, common sense____B__.A. is something that common people like bestB. is something that enables one to form correct opinionsC. is a popular quality a person is born withD. is a quality that is possessed by common people13. The word“extraneous” in Paragraph 4 most probably means__D____.A. rightB. extraordinaryC. clearD. not related14. Which of the following is NOT mentioned as a factor for success? BA. Intelligence.B. Modesty.C. Creativity.D. Good luck.15. The passage is mainly concerned with___D___.A. organizational ability and good work habitsB. the way to obtain big profits and achieve fame and successC. knowledge and interest which are primary to successD. what successful people have in commonPassage 4Baekeland and Hartmann report that the “short sleepers” had been more or less average in their sleep needs until the men were in their teens. But at about age 15 or so, the men voluntarily began cutting down their nightly sleep time because of pressures from school, work, and other activities. These men tended to view their nightly periods of unconsciousness as bothersome interruptions in their daily routines.In general, these “short sleeps” appeared ambitious, active, energetic, cheerful, conformist(不动摇) in their opinions, and very sure about their career choices. They often held several jobs at once, or workers full-or part-time while going to school. And many of them had a strong urge to appear “normal” or “acceptable” to their friends and associates.When asked to recall their dreams, the “short sleepers” did poorly. More than this, they seemed to prefer not remembering. In similar fashion, their usual way of dealing with psychological problems was to deny that the problem existed, and then to keep busy in the hope that the trouble would go away.The sleep patterns of the “short sleepers” were similar to, but less extreme than, sleep patterns shown by many mental patients categorized as manic(疯人).The “long sleepers” were quite different indeed. Baekeland and Hartmann report that these young men had been lengthy sleeps since childhood. They seemed to enjoy their sleep, protected it, and were quite concerned when they were occasionally deprived of their desired 9 hours of nightly bed rest. They tended to recall their dreams much better than did the “short sleepers.”Many of the “long sleepers” were shy, anxious, introverted (内向), inhibited (压抑), passive, mildly depressed, and unsure of themselves (particularly in social situations). Several openly states that sleep was an escape from their daily problems.16. According to the report,___D___.A. many short sleepers need less sleep by natureB. many short sleepers are obliged to reduce their nightly sleep time because they are busy with their workC. long sleepers sleep a longer period of time during the dayD. many long sleepers preserve their sleeping habit formed during their childhood17. Many “short sleepers” are likely to hold the view that __C___.A. sleep is a withdrawal from the realityB. sleep interferes with their sound judgementC. sleep is the least expensive item on their routine programD. sleep is the best way to deal with psychological troubles18. It is stated in the third paragraph that short sleepers __B___.A. are ideally vigorous even under the pressures of lifeB. often neglect the consequences of inadequate sleepC. do not know how to relax properlyD. are more unlikely to run into mental problems19. When sometimes they cannot enjoy adequate sleep, the long sleepers might __A__.A. appear disturbedB. become energeticC. feel dissatisfiedD. be extremely depressed20. Which of the following is Not included in the passage? BA. If one sleeps inadequately, his performance suffers and his memory is weakenedB. The sleep patterns of short sleepers are exactly the sane as those shown by many mental patientsC. Long and short sleepers differ in their attitudes towards sleepD. Short sleepers would be better off with more restPassage 5Not so long ago almost any student who successfully completes a university degree or diploma course could find a good career quite easily. However, those days are gone, even in Hong Kong, and nowadays graduates often face strong competition in the search for jobs.Job seekers first have to make a careful assessment of their own abilities. One area of assessment should be of their academic qualifications, which would include special skills within their subject area. Graduates should also consider their own personal values and attitudes, or the relative importance to themselves of such matters as money, security, leadership and caring for others.The second stage is to study the opportunities available for employment and to think about how the general employment situation is likely to develop in the future. After studying all the various options, they should be in a position to make informed comparisons between various careers.Job application forms and letters should, of course, be filled in carefully and correctly, without grammar or spelling errors.When graduates are asked to attend for interview, they should prepare properly by finding out all they can about the prospective employer. Dressing suitably and arriving for the interview on time are also obviously important. Interviewees should try to give positive andhelpful answers and should not be afraid to ask questions about anything they are unsure about. This is much better than pretending to understand a question and giving an unsuitable answer.There will always be good career opportunities for people with ability, skills and determination; the secret to securing a good job to be one of them.21. In Paragraph 1, the sentence “… those days are gone, even in Hong Kong…” suggest that ___D___.A. Hong Kong is no longer the good place for finding jobsB. nowadays, everyone in Hong Kong has an equal chance of finding a good careerC. it used to be harder to find a good job in Hong Kong than in other countries.D. in the past, finding a good career was easier in Hong Kong than elsewhere22. The word “relative” in Paragraph 2 could best be replaced by“______B____”.A. familyB. comparativeC. considerateD. slight23. The advice given in the first sentence of Paragraph 3 is to______B_____.A. find out what jobs are available and the opportunities for future promotionB. examine the careers available and how these will be affected in the futureC. look at the information on and probable future location of various careersD. study the opportunities and the kinds of training that will be available24. The word “prospective” in Paragraph 5 is closest in meaning to “___C____”.A. generousB. reasonableC. futureD. ambitious25. In paragraph 5, the writer seems to suggest that _____C___.A. interviewees should ask a question if they can’t think of an answerB. pretending to understand a question is better than giving an unsuitable answerC. it is better for interviewees to be honest than to pretend to understandD. it is not a good idea for interviewees to be completely honest in their answersPassage 6Some people believe that international sport creates goodwill between the nations and that if countries play games together they will learn to live together. Others say that the opposite is true: those international contests encourage false national pride and lead to misunderstanding and hatred. There is probably some truth in both arguments, but in recent years the Olympic Games have done little to support the view that sports encourage international brotherhood. Not only was there the tragic incident involving the murder of athletes, but the Games were also ruined by lesser incidents caused principally by minor national contests.One country received its second-place medals with visible indignation after the hockey final. There had been noisy scenes at the end of the hockey match, the losers objecting to final decisions. They were convinced that one of their goals should not have been disallowed and that their opponents’ victory was unfair. Their manager was in a ragew hen he said, “This wasn’t hockey. Hockey and the International Hockey Federation are finished.” The president of the Federation said later that such behavior could result in the suspension of the team for at least two years.The American basketball team announced that they would not yieldfirst place to Russia, after a disputable end to their contest. The game had ended in disturbance. It was thought at first that the United States had won, by a single point, but it was announced that there were three seconds still to play. A Russian player then threw the ball from one end of the court to the other, and another player popped it into basket. It was the first time the USA had ever lost an Olympic basketball match. An appeal jury debated the matter for four and a half hours before announcing that the result would stand. The American players then voted for not to receive the silver medals.Incidents of this kind will continue as long as sport is played competitively rather than for the love of the game. The suggestion thatathletes should compete as individuals, or in non-national team, might be too much to hope for. But in the present organization of the Olympics there is far too much that encourages aggressive patriotism.26. According to the author, recent Olympic Games have _____C_____.A. created good will between the nationsB. bred only false national prideC. barely showed any international friendshipD. led to more and more misunderstanding and hatred27. What did the manager mean by saying “… Hockey and theInternational Hockey Federation are finished.”BA. His team would no longer take part in the international games.B. Hockey and the Federation are both ruined by the unfair decisions.C. There should be no more hockey matches organized by the Federation.D. The Federation should be dissolved.28. The basketball example implied that ______A_____.A. too much patriotism was displayed in the incident.B. the announcement to prolong the match was wrongC. The appeal jury was too hesitant in making the decisionD. the American team was right in rejecting the silver medals29. The author gives the two examples in Paragraph 2 and 3 to show____C____.A. how false national pride led to undesirable incidents in international gamesB. that sportsmen have been more obedient than they used to beC. that competitiveness in the games discourages international friendshipD. that unfair decisions are common in Olympic Games30. What conclusion can be drawn from the passage?DA. International contests are liable for misunderstanding between nations.B. Athletes should compete as individuals in the Olympic Games.C. Sport should be played competitively rather than for the love of the game.D. The organization of the Olympic Games must be improved.III. Vocabulary and Structure1. It is just as hard to persuade my wife not to dance _B___ to keep me from the football field.A. so it isB. as it isC. so is itD. as is it2. The committee ___B___ different opinions about the financial help given to the workers.A. hasB. haveC. havingD. having had3. Nothing is ___A__ time; yet nothing is less valued.A. more precious thanB. less precious thanC. most preciousD. as precious as4. ____A__ you’ve got a chance, you might as well make full use of it.A. Now thatB. AfterC. AlthoughD. As soon as5. Not only I but also Jane and Mary ____B__ tired of having one examination after another.A. isB. areC. amD. be6. The child felt there was no one he could turn __A____ with his problem.A. toB. forC. onD. at7. __A__ from the top of the mountain, the whole city looks beautiful.A. SeenB. SeeingC. SeeD. Looked8. Traveling abroad will broaden your ____ C__ and help you to understand the world.A. rangeB. sightC. horizonD. vision9. In all English towns there is a speed limit of 30 miles an hour, __B___A. is thereB. isn’t thereC. is itD. isn’t it10. No sooner had he left ____B___ the police arrived.A. whenB. thanC. thenD. before11. __D__ the expense, I ____ a round-the-world tour.A. Were it not … would takeB. If it were not… takeC. Weren’t it for… will takeD. If it hadn’t been for… would have taken12. As a part-time job, I worked in a small beachside restaurant during the college __C____.A. scopeB. scheduleC. vacationD. vocation13. The mountain village is my hometown. I spent __C___ merry night there when I was young.A. a great manyB. plenty ofC. many aD. a great deal14. ___B___ the cold wind, they went out without their coats.A. DespiteB. In spiteC. AlthoughD. Unless15.Ellis Haizlip began his stage career in Washington, D.C., _D__ supervised the Howard University Players during their summer season.A. he wasB. where he was C .which heD. where he16. Never before __A____ won gold medals in the Olympic Games.A. have so many Chinese athletesB. so many Chinese athletes haveC. have such many Chinese athletesD. such many Chinese athletes have17. Those ___A__ to go to the exhibition should inform the office.A. not wantingB. who not wantC. not wantedD. are not want18. What did the teacher ___C___ us to do tonight as our homework?A. allowB. permitC. assignD. resign。
科技英语习题答案
科技英语习题答案V、练习参考答案练习1I、1、the（各项均为负。
)2、the; a （功率额定值是电阻器不会引起温度太⼤的上升⽽能安全地耗散的最⼤功率。
）3、an（这是均⽅根值伏特计。
）4、The; a（该设备的成功设计需要详细地了解性能指标。
）5、the; a; a（在氢原⼦的布尔模型中，⼀个电⼦绕⼀个质⼦以半径为R的圆周运转。
）6、the（电阻的单位是欧姆。
）7、an （这是⼀个h参数。
）8、/; /（图5－1画出了Oersted的实验。
）9、A; a; a（机器是能够传递⼒来完成某⼀确定⽬的的⼀种设备。
）10、/（⽔压机将在第14章加以考虑。
）11、the; the [/]（我们容易确定参数µ的值。
）12、/; the（根据式（2－1），我们得到以下的关系式。
）13、the; /（作者⼯作在位于阿林顿的得克萨斯⼤学。
）14、an（甚⾄当积分区间并不是⽆穷时，能够恰当地显⽰⼀个时函数的傅⽒变换的仪器是多么重要啊！）II、1.Dr. Emmet graduated from Harvard University in 2001.2.Professor Li earned his Ph.D. degree in mechanical engineering Xi’anUniversity of Technology in 1988.3.Now we shall turn to the discussion of local area networks.4.Bainbridge mass spectrometer is asspectrometer.5.或of a substance is its mass per unit volume.6.An increase in pressure always causes a decrease in volume.7.Fig. (2-5) shows what is expressed by Eq. (2-2).III、1.2.Finally, a broad stepped impedance transformer is designed by this method.3.Dynamic analysis and evaluation security of proactive secret sharingsystem4.The approach can be appliedarbitrary profile.5.练习2I、1. This circuit consists of a battery, an inductor and a capacitor.2. Compute the electric fields at points a, b, and c.3. This satellite is used for communications between the United States and Great Britain, France and Italy.5. Chapters 6, 7, and 8 deal with transmission lines.II、1. Its error is six parts in 1012.2. This computer stores four times more information than that one (does).3. The demand for this kind of equipment in the near future will be 20 times what it is.4. The voltage across this component is a few tenths of a volt.5. Now its internal pressure is one sixteenth what it was.III、can be neglected.4. Figs. 1, 2, and 3 show this process in detail.练习3I、1. This new type of computer has many advantages over the general type.2. It is not difficult to solve this differential equation for the unknown quantity.3. Of these five new chapters, the first one deals with the basic principles of negative feedback.4. At this point/time, current differs in phase from voltage by 90o.5. By analyzing [By the analysis of] the parameters of the instrument, we can understand its performance.6. We will find out its average velocity over this distance.7. The science of electronics is too important in the world today.8. They solved this problem with great difficulty.II、1. For x＞1, there is no solution to this equation [this equation has no solution].2. Upon [On] substituting [substitution of] these values into [in] theequation, we obtained the following expression..3. This circuit is similar in operation to that of Fig. 1-10.4. This computer is very good in performance.5. These waves travel only in one direction.III、th of October.can be neglected.CBO7.练习4I、1. The force acts perpendicular to the surface of the table.2. The three coefficients here remains to be determined.3. The two equations below will be often (frequently) used in later chapters/in the chapters which follow.4. Here we use two metal balls 10 cm apart.5. The output remains/stays constant/unchanged/fixed/unaltered/the same.6. All the textbooks available discuss this problem.7. Accurate in operation and high in speed, computers have found wide applications.8. The answer to this problem looks correct.9. Two parallel wires a distance (of)δapart carry the current i.10. The problem now is how to measure the voltage across this component.11. These data will be sent to the computing center 2 kilometers away.12. Upon rearranging the equation above, we have [get, obtain] the following expression.13. These charges can interact with other charges present.14. Forces can be transmitted without contact, contrary to the common belief.15. This coefficient is typically 0.35.II、1. In this case, the input does not fall; nor [neither] does the output. […; the outputdoes not fall, either.]2. The resistance of a conductor on the theconductor is made, but also on the size and temperature of the conductor.练习5I、1. This equation can be solved of the following two ways/the two ways which follow.k has the same unit as work (does).II、2. are used to connect these components.5. AC can be changed/turned/converted/transformed/translated into/to DC,the multimeter is widely used in electrical engineering.III、R o.6. We must take the effect of temperature on [upon] semiconductors into account.7. In this case, the variation of output with input is very small.8. This curve shows the dependence of distance on/upon speed.IV、练习6I、1. This image, it will be noticed, is a real image.2. This technical problem, we hope, will be solved soon.3. 210 is approximately 1000, a fact that we think is very useful in the study of digital electronics.4. A resistor of say 100 ohms should be used here.II、radars.III、1. In Section 1-2, the concept of force was introduced.2. As early as the 1940s, it was found that semiconductors are very useful.3. This result can also be arrived at in another way.4. At that time no use was made of this phenomenon/…, thisphenomenon was made no use of.5. This point will be dealt with in the next section.IV、1. This computer than that one (does)/This computer is much better in performance than that one (is)..4. The greater the resistance, the longer time it takes for the capacitor to reach its maximum voltage/…, the longer time is required for the capacitor to reach its maximum voltage.)5. The current as small as 0.1 A cannot produce enough heat.V、或：We can determine the weight of the body easily.… are in agreement with the experimental values.]练习7I、1. It will take a few months to design this kind of aircraft with the help of a computer.2. It is left as a problem to [for] the reader to show that this expression holds.3. The program to be executed is stored in this unit.4. This valley acts as the foundation on which to build the dam.5. In this laboratory there are many kinds of instrument for students to choose from.6. Let t0 equal/be equal to zero.7. The farther away the target (is), the longer time it takes for the echo to return.8. For the series to converge, x must be less than 1.9. We find this concept very difficult to understand.10. This method makes it much easier to detect targets.11. This factor will affect the ability of a computer to store information.12. We have to find out how large to make r so as for the series to converge.13. This is a pen to draw pictures with.14. Elasticity is the tendency of a body to return to its original condition after being deformed.15. Ordinary matter is said to be electrically neutral.16.This property makes it possible for metals to be made into any shape.17. This table is unfit for a student to do experiments on.18. Now we consider what path of integration to take.II、1. The sineemphasized.2. Not only temperature and light affect the conductivity, but the addition ofgreat help.练习8I、1. The amplifier amplifies the received signals.2. Moving molecules have kinetic energy.5. Fig. 1 – 3 shows the photo of a freely falling body.3. Speed equals distance divided by time.4. Voltage equals/is equal to current multiplied by resistance.5. The resistance of air increases with the increased/increasing/an increase in speed.6. A transformer is a device consisting of two or more coils wound on/round an iron core.7. It is necessary to find out the current flowing through this component.8. This book, properly used, will be of great help to the reader.9. Flowing through a circuit, the current will lose part of its energy.10. Given/Knowing time and speed, we/one can find out distance.11. Having studied this chapter, the student will understand/will have understood the principle of a computer.12. The speed of light being extremely great, we cannot measure it by ordinary methods.13. Several comsats were launched, all of them (being) high-altitude satellites.14. Called “the mother of all networks,”the Internet is a widely used international network.15. This force can be resolved into two components, one (being) horizontal and the other vertical.II、1.Let us construct/draw a circle with the origin as the center and of radius R.2.This parameter should be measured with E grounded.3. With no resistance in the circuit,the current will increase indefinitely.4. With this in view, we have written this book.5. This paper introduces a new design method/technique, with emphasis on its principle.III、1.Let us consider designing a computer.2.We refer to these components as being passive.3.This involves taking the Fourier transform.4.On/Upon rearranging the above equations, we obtain the following set ofequations.5.In using this equation, it does not matter which plane is considered as 1.IV、1.2.3.4.5.练习9I、1. The problem was not solved until a completely different method was introduced.2. Nearly 100 years passed before the existence/presence of subatomic particles was confirmed byexperiment/experimentally.3. The year this device was invented, World War II broke out.4. Small as they are, atoms are made up of still smaller particles.5. These two resistors should be selected/chosen so that the transistor can operate normally.6. The body is in such a state that it can do work.II、1. The relation that voltage is the product of current and resistance applies to all the dc circuits.2. The discovery that magnetism can produce current is extremely important in the field of electricity.3. An equation is an algebraic statement that two algebraic expressions are equal.4. There is evidence that no life exists on the moon.5. The question now arises whether the algorithm is of practical use.6. In this case there is no guarantee that the series is convergent.7. There is a growing/increasing awareness that these techniques/methods are very useful.8. One of/Among the most noteworthy achievements at that time was the realization that light consists of electromagnetic waves.conductors.in the analytical model, we must take other factors into account.III、1.These features make it difficult for electronic counter-measure systemsto intercept, analyze and jam this kind of signal.2. The existence of and the ability to control these phenomena make those devices possible.3. The variation of/in the number of the filter’s teeth has a greater effect on the performance of its passband than the variation of/in its dimensions.4. Scalar detection will result in the loss of some phase information.5. Fig. 6 shows the schematic diagram of measuring scatter parameters by the natural parameter transformation method.练习10I、1. Now it remains to be determined when the series converges.2. It is clear from Dubamel’s Theorem that this limit exists.3. It follows from Maxwell’s hypothesis that whenever there is a change in an electric field, a magnetic field is produced.4. It does not matter whether the magnet is moved in this case.5. Temperature determines in what direction the transfer of heat will take place.6. It is now a well-known fact that all matter consists of tiny particles.II、1. What a generator does is (to) change mechanical energy into electrical energy.2. What this chapter describes/What is described in this chapter is of great importance.3. Matter is what can occupy space.4. What we have discovered in this experiment is the entirely new realm of electrical phenomenon.5. This direction is opposite to what has been assumed.6. Magnitude, direction, and place of application are what we call the three elements ofa force.7. These numbers constitute what is known as the real number system.8. In what follows, we shall acquaint ourselves with some basic concepts.III、1. An x-band wave-guide test system is shown in Fig.7. [或：Fig. 7 shows …].2. This method lowers the requirement for the hardware of a sample network.3. On the basis of the above analysis of the decomposition of the polynomial, a novel configuration results. [或：The above analysis of the decomposition of the polynomial results in a novel configuration.]4. Finally, an analysis of packet loss probability is made by computer simulation.5. The sparse ratio of the resulting impedance matrix is as high as 40%.练习11I、1. The meter (that/which) we use to measure the voltage across a resistor is called a voltmeter.2. Computers are the most efficient assistants (that) man has ever had.3. Now this disease is no longer the serious problem (that) it once was.4. Radar can measure the time (that) it takes for the radio echo to return.5. We must calculate the distance (that/through which) the body is lifted.6. The direction (that/in which) a body moves is also very important.7. The number of times (that/by which) this particle vibrates per/a second is called/termed/named/known as/spoken ofas/referred to as frequency.8. We equate these two ratios, from which the simplest formula follows/results.9. It is necessary to determine the time when/that/at which the y-component has decreased to zero.10.. The curve the y-coordinate of each point on which is zero is just the x-axis.II、1. The point at which the circle cuts the axis of reals is where α= ω.2. The force of gravity means the force with which the earth attracts a body.3. The surface of a picture tube upon which the electrons produce the picture is called the screen.4. The author would like to express thanks to the editors of the series of which this book is a part/to which this book belongs.5. This is a parallelogram of which the two given vectors are/form sides.6. The pressure is equal to the total force divided by the area over which it is exerted.7. The two elements of which water consists are hydrogen and oxygen.8. This depends on the efficiency with which electrons are produced.9. These two laws are the foundation on which all other laws are built.10. The temperature at which water freezes is generally 0o C.III、1. As the title indicates, this chapter will discuss nonlinear equations.2. As the name shows, a fluid is a substance which flows readily.3. This single force produces the same effect as is produced by those forces together.4. Now we are able to solve such differential equations as occur in physics.5. This function can be accomplished by using the full adder as was described in the previous section.6. These concepts enable us to understand a wide range of phenomena in electrostatics,or “static electricity,” as it is called.7. This current is, as predicted, very small,8. First let us consider the simplest circuit as shown on page 2.IV、1. This is a slightly higher value than we predicted.2. This reactor can produce more fuel than it consumes.3. Let us consider the case when the torque is zero.4. We must determine the values of currents and voltages after the switch closes.5. During the ten years since this book was first published, significant changes have taken place/have been seen in metal-making.V、1. Even in this case these protocols can provide a limited number of the acceptable quality of voice service.2. This paper presents a an 8098 microcontroller to series-communicate with a 386 personal computer.[A detailed analysis is made of the effect of equalization parameters on equalization performance.]4. Each receiver channel in Fig. 1 contains an RF amplifier, a mixer, an IF amplifier, anetc.”的⿊点重合在⼀起了）larger the abnormal extent larger is the residual mismatch, with the curve going up.练习12I、1. be grounded;2. be carried;3. be raised;4. be;5. not try;6. be; be satisfied;7. be;8. be; was; have; 10. were concentrated; 11. had been; 12. were moving; 13. is going to rain;14. be; 15. leakII、1. Should anything abnormal happen, switch/turn off the power supply at once/immediately.2. Had electronic computers not been used, it would have taken them a long time to solve this problem.3. It is very important that all solutions (should) be checked in the original equation.4. It is suggested that this design (should) be modified at once.5. Without semiconductors, satellite communications would be impossible.6. We could also have used Theorem (6) to derive the result.7. The requirement that energy (should) be conserved must be satisfied.8. Everything here, be it a component or a device, is home-made.III、1. It was this scientist who/that discovered this phenomenon a century ago.3. The speed with which sound waves move through a depend on the properties of the medium.4. It is not clear yet under what conditions it is that this formula can be used.5. This property we call inertia.IV、1. The author is engaged in the teachingimage processing and recognition.2. Let P and Q be two Boolean permutations of the same then their composition is a new Boolean permutation. which can remarkably reduce the time to raise the pen, thus raising the drawing efficiency.4. What this paper describes is of great interest to communications engineers.5. The minimum entropy technique for estimating the Doppler frequency rate is presented, which has the advantages over the classical techniques of high accuracy and a small amount of computation.练习13II、1. By electromagnetic force is meant the potential difference across the battery when there is no flow of current.2. In the table below/which follows are listed various parameters of familiar computers.3. An element cannot be decomposed, nor can it be broken up by chemical methods.4. Only when x = 8, does this equation hold/apply.5. Of particular importance/Especially important are the two concepts which follow.6. Such a set we call the mathematical system.7. Rarely does one know this function with precision.8. This interrelationship between electric and magnetic fields makes possible such things as the electromagnet and the electric motor.9. Not until 1818 was the diffraction of light interpreted/explained.10. By no means do electrons move from the positive terminal to the negative terminal ina wire.II、1. The effect of air resistance is discussed in Chapter 15, and the decrease in acceleration with altitude in Chapter 17.2. It is necessary to determine the charge on and the voltage across this capacitor.3. In this case, no standard is needed, but only a numerical convention.4. This voltage is greater than or equal to 0.4 volt.5. The cathode, when heated, emits electrons.6. Every body, whether accelerated or not, is considered (to be) in equilibrium.7. If necessary, the wire will be covered with some insulation.8. The transistor has its materials arranged p-n-p, hence the name pnp transistor.III、1. An initial analysis is made of the performance of the device.2. The magnetic field is the space around a magnet occupied by the magnetic lines of force.3. This leads to the battery voltage in the model of 500 mV.4. This graph shows the variation with frequency of the resistance of the resistor.5. This is responsible for the direct return to the atmosphere of more than half the water that falls on the land.6. The question now arises how these unknowns can be determined.7. It is necessary to determine the effect on the device of changing the ambient temperature.8. The assumption has been made that the pressure always remains constant during the test.IV、1. The simulation results show that both the schemes are easy to implement.2. The model and algorithm proposed in this paper are to a certain degree/extent superior in performance to the conventional BP algorithm.3. A new technique for estimating the frequency deviation is proposed which gives a high accuracy and requires a small amount of computation.4. Improvement of the accuracy of range alignment in ISAR imaging (by) using the super resolution technique5. Research on and the realization of DTMF in a Cipher Coder6. Analysis of the ability of a quartz flexibility accelerometer to resist bad environment。
科技英语翻译第三四章
科技英语翻译第三四章3.1 名词的译法第1节翻译练习1In an unusual application, this organization uses a fingerprint scanner to monitor the comings and goings of its residents.A capacitor is used to eliminate sparking when a circuit containing inductance is suddenly opened.一个不同寻常的用途是：这个机构使用指纹扫描器监视居住人员的进出。
当含有电感的电路突然断开时，可用电容器消除火花。
第1节翻译练习2The comparison reveals that the error is due to aliasing.The scans confirmed that the su bjects’ brains dealt with words in ways that contradict one hoary old idea.The latest research with radioactive isotopes has shown that this assumption is quite wrong.比较结果表明，误差是由于名称不同而造成的。
扫描结果证实，受试者的大脑处理词的方式同一ambient temperature, and the external cooling. 根据分子理论的原理，物体的温度取决于其分子的平均速度。
温度控制的效果取决于润滑剂的用量、环境温度以及外部的冷却设施。
第1节翻译练习3Particular attention should be given to hoses to ensure that chafing does not occur.The primary concern of electrical engineering is the doing of work by the delivery of energy. Gene piracy is not new.All plants and animals need carbon for growth. 要特别注意软管，保证没有擦伤。
科技英语练习及答案
一、科技英语句子的修辞令修改以下句子:令 1. The total area under natural protection reaches 19330 hectares, and which account for 2.01% of the total area of China.令 2. The boil point of the solution is higher than any of its separate components.令 3. Using triethanolamine ( 三乙醇胺 ) as absorption solution to capture various air pollutants simultaneously inone sample, it’sabsorptionefficiency ishigh.令 4. Chinese traditional herbal medicine takes a high proportion on the pharmaceutical market and are being more and more emphasized, so that the supply is smaller than the demand.令 5. Some microorganisms can survive under extreme environments, for example, a lot of microorganisms were found in sea and saline lakes.令 6. That happened later indicated that this endothermic reaction may alleviate the breakage of a filament due to denitrogenation during thecarbonization stage. (随后发生的现象表明，该吸热反应可能会减缓由碳化阶段的脱氮反应所引起的细小纤维的断裂。
科技英语综合教程练习答案
Keys:第一章科技英语阅读第一节科技英语主要特点I.1.The first three sentences in Passage One are all constructed with passive voice while thefirst three sentences in Passage Two are constructed with active voice. Therefore, the language in Passage One sounds more formal and objective than that of Passage Two.2.The words spoken by Sheila in Passage Two are informal. Examples: "There's Ravi atthe home of that American doctor." (Contracted form); "A wonderful guy." (Incomplete sentence); "Ravi looks sweet, doesn 't he?" (Question tag).3.In the second paragraph of Passage One, "it" refers to "to use insecticide regularly, on avery large scale."4.In the second paragraph of Passage Two, "through" means "finish" or "complete."5.Passage One is written for academic purpose and Passage Two mainly for entertainment. II.Passage OneA blast of hot air is sent into the bottom of the furnace to make the coke burn fiercely. It is blown into the furnace through pipes. These pipes are installed around the circumference of the blast furnace eight feet above the bottom.While the coke is burning and iron is melting, gas is formed at the top of the chamber. This is led off from the top of the furnace to be used. It contains carbon monoxide, which is combustible. Part of this gas is used for making the air blast hot. It is led off into stoves.Passage TwoAll elements are composed of discrete units called atoms, which are the smallest particles that exhibit the characteristics of the element. Atoms are tiny units of matter composed of positively charged protons, negatively charged electrons, and electrically neutral neutrons. Protons and neutrons, which have approximately the same mass, are clustered in the nucleus in the center of the atom. Electrons, which are tiny in comparison to the other units, orbit the nucleus at high speed. Atoms that have an equal number of electrons and protons are electrically neutral. Those that have gained or lost electrons, and therefore are positively or negatively charged, are called ions.第二节科技、半科技英语专业术语I.1. D (自动驾驶仪)2. F (生物钟)3. I (热核的)4. G (地热的)5. B (微波)6. J (放射疗法)7. E (光周期)8. A (超导体)9. H (远距离操纵器) 10. C (超显微/滤过性病毒)II.1. 一位从事航空医学研究的医生2. 防止计算机犯罪的措施3. 一种新型除霜器4. 一个用光电池驱动的玩具5. 一辆装有自动报警器的汽车6. 隔音材料7. 一种广泛使用的杀虫剂（农药）8. 用放射性碳做的试验9. 电信业的发展10. 一台通用机床III.1. in-(Inorganic)2. radio- (radioactive)3. hydro- (Hydrotherapy)4. -free (caffeine-free)5. infra- (infrared) / ultra- (ultrared)6. mono- (monorail)7. aero- (Aerodynamics) 8. -fold (33-fold)9. geo- (geocentric) 10. -proof (weatherproof)11. bio- (biotechnology) 12. anti- (antibiotic)IV. 发电站 2. 矿物燃料 3. 太阳黑子 4. 航天探测器 5. 滚珠轴承6. 涡轮7. 航天飞机8. 树木的年轮9. 离心调速器10. 心肌功能V.1. flow2. laws3. law4. conserved5. transferred6. transformed7. bond8. thermodynamics9. work 10. law 11. degraded 12. work13. law 14. state 15. disorder 16. energy17. law 18. biological 19. metabolically 20. cellVI.1.很明显，许多家用电器的加热和照明作用都依靠电阻。
科技英语写作试题及答案
科技英语写作试题及答案一、选择题（每题2分，共10分）1. What is the most common method of communication in scientific research?A. EmailB. ConferenceC. Journal publicationD. Social media2. Which of the following is NOT a characteristic ofscientific writing?A. ObjectivityB. ClarityC. SubjectivityD. Precision3. In scientific writing, what is the purpose of an abstract?A. To provide a detailed description of the research methods.B. To summarize the main points of the research.C. To list all the references used in the paper.D. To give a comprehensive review of the literature.4. What does APA stand for in academic writing?A. American Psychological AssociationB. Association of Professional AuthorsC. Academic Publishing AssociationD. Advanced Publishing Association5. Which of the following is the correct order of a scientific paper?A. Introduction, Results, Discussion, ConclusionB. Abstract, Introduction, Methodology, Results, DiscussionC. Title, Abstract, Introduction, Literature Review, Methodology, Results, Discussion, Conclusion, ReferencesD. Abstract, Results, Methodology, Introduction, Discussion答案：1. C2. C3. B4. A5. C二、填空题（每空1分，共10分）6. The _______ is a vital part of a scientific paper that provides a brief overview of the research.[Answer: Abstract]7. When writing a scientific paper, it is essential to use _______ language to ensure clarity and precision.[Answer: technical]8. The _______ section of a scientific paper details the procedures used to carry out the research.[Answer: Methodology]9. Scientific papers are often peer-reviewed to ensure_______ and reliability.[Answer: validity]10. Proper citation of sources in scientific writing helps to avoid _______ and gives credit to the original authors.[Answer: plagiarism]三、简答题（每题5分，共20分）11. Explain the importance of using correct citation formats in scientific writing.[Answer: Using correct citation formats in scientific writing is important for several reasons. Firstly, it helps to avoid plagiarism by giving proper credit to the original authors. Secondly, it allows readers to locate the original sources easily for further reading or verification. Lastly,it maintains the integrity and credibility of the scientific community by upholding academic standards.]12. What are the key elements of a scientific abstract?[Answer: The key elements of a scientific abstract include the background or context of the research, the purpose or objective, the methodology used, the main results, and a brief conclusion or implication of the findings.]13. Describe the role of peer review in the publication process of scientific papers.[Answer: The role of peer review in the publicationprocess of scientific papers is to ensure the quality, validity, and originality of the research. Peer reviewers,who are experts in the field, evaluate the paper for its scientific merit, methodology, and presentation. They provide feedback and recommendations that can help the authorsimprove their work before it is published.]14. Discuss the ethical considerations in scientific research and writing.[Answer: Ethical considerations in scientific researchand writing include honesty in reporting results, avoiding fabrication or falsification of data, maintainingconfidentiality when necessary, and ensuring that theresearch has been conducted with informed consent and adherence to ethical guidelines. Researchers must also avoid conflicts of interest and ensure that their work does notharm the participants or the environment.]四、论述题（每题15分，共30分）15. Discuss the impact of technology on scientific communication and the challenges it presents.[Answer: Technology has significantly impacted scientific communication by enabling faster and more efficient dissemination of research findings through digital platforms. It has also facilitated collaboration among researchersacross the globe through tools like cloud computing andvirtual labs. However, it presents challenges such as information overload, the need for data security, and the potential for misinformation or "fake news" to spread rapidly.Researchers must be adept at navigating these challenges to ensure that their communication remains accurate and trustworthy.]16. Analyze the role of language in scientific writing and the strategies to enhance clarity and precision.[Answer: Language plays a crucial role in scientific writing as it is the medium through which researchers convey their findings and ideas. To enhance clarity and precision, writers should use concise and unambiguous language, avoid jargon when unnecessary, and employ active voice whenever possible. Additionally, structuring the text logically, using appropriate headings and subheadings, and carefully proofreading for grammar and spelling errors are essential strategies to improve the quality of scientific writing.]。
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练习3
2、现有的化学教科书均提到了这一现象。
All the chemistry textbooks available mention this phenomenon.
11、由于结构简单、价格低廉，这种机器深受用户青睐。
Simple in structure and low in price,this machine is warmly received by users. 12、与普通的观念（common belief）相反，戈登（Gordon）博士并不是第一个使
用该金属的人。
Contrary to common belief,Dr.Gordon was not the first to use the metal.
15、这是一根长为5米的直线（straight line）。
This is a straight line5meters long.
练习4
1、这些新设备与旧的相比的优点之一是它们的体积小。
One of the advantages of these new devices over the old ones is their small size.
2、由于其极为重要，这个电路（circuit）将在后面详细讨论。
Because of its great importance,this circuit will be discussed in detail later.。