新核心大学英语科技英语课后练习

合集下载

新核心大学英语3课后答案

新核心大学英语3课后答案

新核心大学英语3课后答案1. 1、Most students _______ their jobs by the end of July. [单选题]A、will have found(正确答案)B、 have foundC、will findD、 are going to find2. 2、The company has confidence in its latest model of computer __ low cost will make it attractive to students. [单选题]A、 itsB、 whose(正确答案)C、whichD、that3. 3、It was not tom’s ______that he was late for school, because he was delayed by a traffic accident. [单选题]A、fault(正确答案)B、errorC、 mistakeD、failure4. 4、A series of attempts ___, we came to a wonderful solution to the problem. [单选题]A、 had been madeB、 were madeC、having madeD、 having been made(正确答案)5. 5、 According to the schedule, the plane for Chengdu at eight o’clock in the evening. [单选题]A、takes off(正确答案)B、is taking offC、has taken offD、was taking off6. 6、The heavy rain _____, the students went on planting trees. [单选题]A、had stoppedB、stoppedC、having stopped(正确答案)D、being stopped7. 7、______yesterday _____I learned that famous story . [单选题]A、It was not until ;whenB、It was until ;thatC、It was not until ;that(正确答案)D、It was until ; then8. 8、When she turned the corner, she found herself __ by a man with dark glasses. [单选题]A、 was followedB、followed(正确答案)C、had been followedD、was following9. 9、 Mary is never late for class, _______ ? [单选题]A、 does sheB、is she(正确答案)C、doesn’t sheD、isn’t she10. 10、 If you had wanted to buy a record, what ________? [单选题]A、 would you buyB、had you boughtC、 would you have bought(正确答案)D、would you be buying11. 11、The car was repaired but not quite to the owner’s______. [单选题]A、pleasureB、 satisfaction(正确答案)C、 joyD、 deligh12. 12、The ground is wet; it _______ last night. [单选题]A、 might have been rainingB、 can have rainedC、should have rainedD、must have rained(正确答案)13. 13、So little ____ about philosophy that the lecture was completely beyond him. [单选题]A、Tom knewB、Tom knowsC、did Tom know(正确答案)D、does Tom know14. 14、The more learned a man is, _______ he usually is. [单选题]A、more modestB、the modestC、the more modest(正确答案)D、and more modest15. 15、 It is proposed that this matter _______ at the next meeting. [单选题]A、will be discussedB、be discussed(正确答案)C、 must be discussedD、 may be discussed16. 16、He hardly _______ say anything more, since you know all about it. [单选题]A、needsB、need toC、neededD、need(正确答案)17. 17、John and I friends for eight years. We first got to know each other at a Christmas party, But we each other a couple of times before that. [单选题]A、had been;have metB、have been;have metC、had been;had metD、 have been;had met(正确答案)18. 18、 James didn’t attend the meeting and _______ Jane. [单选题]A、 so didB、so didn’tC、neither did(正确答案)D、nor didn’t19. 19、It was not _______ she had arrived home ______ she remembered she had forgotten her suitcase in the hotel. [单选题]A、when; thatB、 until; that(正确答案)C、until; whenD、when; then20. 20、 _______ we go by train or by boat makes no difference. [单选题]A、 Whether(正确答案)B、ThatC、IfD、When21. 21、 ______ the earth to be flat, people feared that Columbus would fall off the edge of the earth. [单选题]A、 Having believedB、To believeC、 Believing(正确答案)D、 Believed22. 22、 I could not have fulfilled the task in time if it _______ for your help. [单选题]A ) had beenB、has beenC、was notD、had not been(正确答案)23. 23、 you the editor at the airport?— No, he away before my arrival. [单选题]A、 Have 、、、met; has drivenB、 Had、、、met; was drivenC、 Did、、、meet; had been driven(正确答案)D、 Have、、、met; had driven24. 24、 They had a (n) _____argument for several hours without reaching an agreement. [单选题]A、 boredB、excitedC、heated(正确答案)D、interested25. 25、 We preferred to put the meeting off rather than __ it without adequate preparation. [单选题]A、 heldB、to holdC、hold(正确答案)D、holding26. 26、 _______ I’ve seen how he lives, I know why he needs so much money. [单选题]A、Now that(正确答案)B、Ever sinceC、So farD、So that27. 27、 He articles for our wall-newspaper these three years, and he about forty articles. [单选题]A、 has been writing; has written(正确答案)B、has been writing; wroteC、 is writing; has been writingD、 has written; has written28. 28、 It is necessary that this machine-tool _______ every day. [单选题]A、 be oiled(正确答案)B、oilC、is to be oiledD、oiled29. 29、 The student _______ are required to bring all the necessary papers. [单选题]A、to be interviewed(正确答案)B、having interviewedC、to interviewD、 interviewing30. 30、 The price of oil rose _______a further $ 2 a barrel. [单选题]A、atB、toC、by(正确答案)D、 on31. In the 1800’s, train roared into stations, They were symbols of progress and expansion .They played as much of a role in American’s history as presidents and generals.The first American railroads were built in the late 1820’s.The early railroads provided cheap transportation for shippers and travelers .To encourage the railroads to expand intounsettled lands ,President Millard Fillmore signed a series of land-grant acts(土地拔赠法案)in the 1850’s. These acts gave the railroad companies ownership of land that ran along the railways. In return for the land, the railroads carried government traffic at reduced rates .The railroad companies sold much of their land to farmers and cattlemen, who then shipped their goods on the trains.The importance of the railroads became clear during the Civil War. During the war, trains carried troops, arms, and supplies. One reason that the North won the war is that it had more use of the railroads.Between 1865 and 1900, railroads grew rapidly. The first transcontinental(跨越全洲的)route was completed in 1869.This track made it easier for pioneers to cross the Rocky Mountains and settle the West .And the railroads brought new people to the West even before the trains started running .Thousands of Chinese and Irish laborers helped to lay down the tracks.31题为阅读原文,随意选择 [单选题]A、at(正确答案)B、toC、byD、 on32. 32、When were the first American railroads built according to the passage ? [单选题]A. Around 1800B.Around 1830(正确答案)C.Around 1860D.Around 189033. 33、Which of the following is NOT a result of the land-grant acts of the 1850’s? [单选题]A. Farmers and settlers received land for free.(正确答案)B. The railroads expanded into unsettled landsC. The government could pay less for its railroadsD. Farmers and cattlemen bought land from the railroads.34. 34、What was one of the reasons that the South was defeated in the Civil War? [单选题]A. Only the North owned railroads and trains.B.The North used railroads to attack the Southern army.C. The South failed to make good use of railroads.(正确答案)D. The South was short of military supplies.35. 35、Which of the following is NOT true according to the passage ? [单选题]A. The first railroad that reached the West was completed in 1860’s.B. Trains helped pioneers settle the WestC. Railroad construction created a lot of jobs .D. Trains carried Chinese and Irish laborers to the West.(正确答案)36. Which of the following best expresses the main idea of the passage? [单选题]A. Trains helped pioneers to cross the Rocky Mountains.B. Railroad played an important role in American history.(正确答案)C. Trains controlled American economy in the 19th century.D. Railroads grew rapidly between 1865 and 1900.37. During her childhood, Rachel showed an interest in nature and in writing. After high school ,she entered Pennsylvania State College for women, aiming at becoming a writer. She switched to biology ,however ,thus setting the course of her life .Rachel went tojohns Hopkins University for further study and become a member of the zoology(动物学)staff at the University of Maryland.For fifteen years, Rachel worked for the United States Fish and Wildlife Service, writing and editing publications. Fortunately, her employer encouraged her to reach a larger audience. Rachel’s poetic style of writing in three books about the ocean caught the imagination of the general reader. Her rare talent as both a physical scientist and a gifted writer earned her the National Book Award for the Sea Around Us.Rachel’s next book marked her as a leading fighter for the preservation of the natural environment. She began writing Silent Spring, knowing that she would be personally attacked and ridiculed .She continued writing despite the ill health that slowed her progress. Upon completing the book ,she wrote to a close friend , “I have felt obliged to do what I could –if I didn’t at least try I could never again be happy in nature .But now I believe I have at least helped a little.”Rachel Carson did more than help a little .Although both government and industry opposed her ,specialists in public health ,the press ,and the public itself all supported her fight against the irresponsible use of insecticides(杀虫剂).Her book eventually led the government to ban DDT.38题为阅读原文,随意选择 [单选题]A.3 booksB.4 books(正确答案)C.5 booksD.6 books38. The passage describe Rachel as ____________. [单选题]A) a writer and an editorB) a scientist and a writer(正确答案)C) an employer and animal loverD) a professor and a poet39. We know from the passage that Rachel was the author of at least ____. [单选题] *A) 3 booksB) 4 books(正确答案)C) 5 booksD) 6 books40. Which of the following is true about the book Solent Spring ? [单选题] *A) The book gained great support from both the environment and industry.B) The book was written when Rachel was in good health.C) The book is concerned with the oceans in the world .D) The book deals with environmental protection(正确答案)41. The word “ridiculed“in paragraph 3 most likely means_____________ [单选题] *A) counted onB)praisedC)laughed at(正确答案)D)employed42. What does the writer IMPLY about banning DDT? [单选题] *A) The public thought it was wrong to do soB) The industry was opposed to doing so.C) The government was forced to do so .(正确答案)D) The press did not care about it.。

新核心大学英语读写教程基础级Unit 4仅课后答案

新核心大学英语读写教程基础级Unit 4仅课后答案
2) I didn’t want him to think I ________________________ was just angling for sympathy (只是在博取同情). 3) The sociology majors conducted the survey by contrasting country life with city life (对照城乡生活). ____________________________ 4) The bank card holders can check the balance by logging on to the Electronic Bank system (登录网上银 _________________________________ 行系统).
Unit 4 》Part IV 》Task 1
4) The senior students ____________ are involved in writing their graduation theses. 5) The survey reveals ______ that 50% of the old couples live separate from their children. 6) J. K. Rowling is rated as one of the most popular ______ novelists. 7) The police made an investigation into the company ___________ the drug. which manufactured ____ early because of poor health. 8) He was forced to retire 9) The lawyer takes a part-time job as the company’s consultant on legal issues. _________

《科技英语》课后习题答桉完整版

《科技英语》课后习题答桉完整版

《科技英语》课后习题答桉完整版大学英语的预习好帮手Main Content: UNIT 1 *****TICSText A “Game Theory”科技英语阅读方法“名词化结构”科技英语翻译技巧“名词化结构”Step:II. Language Points大学英语的预习好帮手… he must anticipate and overcome resistance to his plans. (Para.3) anticipate: v. 1) to expect or realize beforehand; to foresee e.g. The experts are anticipating the negative effects of air pollution. anticipate: v. 2) to deal with or use before proper time 预支e.g. Ted was not used to saving monthly and he would always anticipate his income. The essence of a game is the interdependence of player strategies. (Para.4) Paraphrase: The key principal of a game is that player strategies are dependent on each other. essence: n.1) the quality which makes a thing what it is; the inner nature or most important quality of a thing e.g. The two things are the same in outward form but different in essence.essence: n. 2) extract obtained from a substance by taking out as much of the mass as possible e.g. milk essence; essence of peppermint (椒薄荷、椒薄荷油) 椒薄荷、interdependence: n. the quality or fact of depending on each other inter-为前缀,意为between each other, 类似的词还有interchange、intermarry、international、interview 等。

科技英语部分课后练习答案

科技英语部分课后练习答案
Page 26-27:
III: Text Organization
Part I (1-3):
A multibillion-dollar craft called the Crew Exploration Vehicle (CEV).
Part II (4-7): David Gump and Gary Hudson;

.
4
Page 52:
III: Translation
11.每个化学元素在周期表中都有一定的原子数和 位置,可以据此来推测其特性:如何同别的元素 相互作用,能形成什么样的化合物,以及它的物 理属性。
12.固体加热到足够温度时,它所含的电子就会有 一部分离开固体表面而飞到周围的空间中去;这 种现象称为热电子放射;通常,电子管就利用这 种现象产生自由电子。
.
5
Page 74-75:
II: Abstract Correction
The current calibration methods of the projectilevelocity measurement system are introduced, and the problem and the unreasonableness of these methods are analyzed. Based on the principle of the mathematical statistics, the calibration method is investigated that measures the projectile-velocity at the same time by the multi-group zone-block device is unbiased, uniform and efficient and uses the average of the measured value as the true value of the projectile-velocity at the point.

新时代核心英语语教程2第二版课后答案

新时代核心英语语教程2第二版课后答案

新时代核心英语语教程2第二版课后答案1、This kind of work _______ skills and speed. [单选题] *A. looks forB. waits forC. calls for(正确答案)D. cares for2、My sister gave me a _______ at my birthday party. [单选题] *A. parentB. peaceC. patientD. present(正确答案)3、I?have to?_______ my younger brother on Sunday. [单选题] *A. look after(正确答案)B. look upC. take careD. look out4、You might not like the way Sam behaves, but please be kind to him. _____, he is your grandfather. [单选题] *A. After all(正确答案)B. Above allC. In allD. At all5、I will _______ at the school gate. [单选题] *A. pick you up(正确答案)B. pick up youC. pick you outD. pick out you6、In the closet()a pair of trousers his parents bought for his birthday. [单选题] *A. lyingB. lies(正确答案)c. lieD. is lain7、His father always _______ by subway. [单选题] *A. go to workB. go to schoolC. goes to bedD. goes to work(正确答案)8、She has no idea of what the book is about. She_______ have read it carefully. [单选题]*A. Can’t(正确答案)B. mustn’tC. shouldn’tD. needn’t9、The work will be finished _______ this month. [单选题] *A. at the endB. in the endC. by the endD. at the end of(正确答案)10、77.You can watch TV when you finish________ your homework. [单选题] *A.to doB.doC.to doingD.doing(正确答案)11、96.Let's cross the street from school. There is a park ______ the school. [单选题] *A.far fromB.next toC.atD.opposite(正确答案)12、As I know, his salary as a doctor is much higher_____. [单选题] *A. than that of a teacher(正确答案)B. than a teacherC. to that of a teacherD. to a teacher13、50.—The sweater is not the right ________ for me.—Well, shall I get you a bigger one or a smaller one? [单选题] *A.priceB.colorC.size(正确答案)D.material(材料)14、This kind of banana tastes very _______. [单选题] *A. nice(正确答案)B. wellC. nicelyD. better15、There are sixty _______ in an hour. [单选题] *A. hoursB. daysC. minutes(正确答案)D. seconds16、______! It’s not the end of the world. Let’s try it again.()[单选题] *A. Put upB. Set upC. Cheer up(正确答案)D. Pick up17、I always get ______ grades than he does, so maybe I should help him more.()[单选题] *A. bestB. better(正确答案)C. goodD. well18、99.—Would you please show me the way _________ the bank?—Yes, go straight ahead. It’s opposite a school. [单选题] *A.inB.forC.withD.to(正确答案)19、--Henry treats his secretary badly.--Yes. He seems to think that she is the _______ important person in the office. [单选题] *A. littleB. least(正确答案)C. lessD. most20、I think ______ time with my friends is fun for me.()[单选题] *A. spendB. spendC. spending(正确答案)D. spent21、You must pay more attention to your pronunciation. [单选题] *A. 词汇B. 拼写C. 发音(正确答案)D. 语法22、You are getting too old for football.You had better _____tennis instead. [单选题] *A.take up(正确答案)B.take inC.take forD.take over23、His picture is on show in London this month. [单选题] *A. 给...看B. 展出(正确答案)C. 出示D. 上演24、73.()about the man wearing sunglasses during night that he was determined to follow him.[单选题] *A. So curious the detective wasB.So curious was the detective(正确答案)C.How curious was the detectiveD.How curious the detective was25、_______ is on September the tenth. [单选题] *A. Children’s DayB. Teachers’Day(正确答案)C. Women’s DayD. Mother’s Day26、I don’t like snakes, so I ______ read anything about snakes.()[单选题] *A. alwaysB. usuallyC. oftenD. never(正确答案)27、65.There is a big sale on in the shop! Every-thing is ________ price. [单选题] *A.bigB.fullC.zeroD.half(正确答案)28、69.Online shopping is easy, but ________ in the supermarket usually ________ a lot of time. [单选题] *A.shop; takesB.shopping; takeC.shop; takeD.shopping; takes(正确答案)29、88.Sorry. I don’t know the way? ? ? ? ? ?Dongfeng Cinema. [单选题] *A.byB.ofC.to(正确答案)D.for30、_______, Mr. Smith. [单选题] *A. Here your tea isB. Here is your tea(正确答案)C. Here your tea areD. Here are your tea。

新核心大学英语_读写教程_基础版_课后练习_Unit_3仅课后答案

新核心大学英语_读写教程_基础版_课后练习_Unit_3仅课后答案

5. To ___________ communicate(交流) with the foreign teachers helped me a lot in improving my oral English.
6. His stories of foreign adventure captured _______ (吸引) my attention.
Unit 3 》Part IV_ cherish the experience that was acquired at the cost of our forefathers’ blood. 5. The books for children should be well-designed, colorful and _________ descriptive . 6. What the professor said had a profound _______ effect on them. 7. This complex problem is completely beyond his comprehension . _____________ 8. Regular reviews can help you retain _____ new knowledge. 9. At Christmas many department stores lengthen _______ their opening hours. 10. The residents here often ______ refer to the immigrants __ as “paratroopers”.
4. I was strongly motivated ________ (激励) to learn English seriously by the desire that I should get good grades and a well-paying job.

新核心大学英语读写教程基础课后练习Unit学习教案

新核心大学英语读写教程基础课后练习Unit学习教案
__________________________________________ __________________________________________ __________________________
第5页/共43页
第六页,共43页。
5) Why should people hav e the ability to write clearly when they do business globally?
Unit 2 》Part II 》MБайду номын сангаасin Reading
Because many forms of business communication, from emails to presentations and marketing to important business contracts, are written in English.
etc. (F) =
a__va__ila_b_l_e
Unit 2 》Part II 》Main Reading
_pr_a_c_tic_a_l_ly_
f_lu_e__nt
_p_r_o_fi_c_ie_n_t
o_p_t_io_n_
b_r_id_g_e_
_c_o_n_n_ec_t_
_re_m__a_in_
Unit 2 》Part II 》Related Reading
c sweep (A)
__ f
1. acknowledge (A)
Verbs
a) to include in scope; to include as
part of something broader; to have as one’s sphere or territory

科技英语课后题答案

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。

  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。

新核心大学英语科技英语课后练习一、单选题:每题2.5分,计37.5分1. Robots are known to save costs, to improve quality and work conditions, and to minimize waste of resources. In the sentence above, the word “minimize” is closest in meaning to (). [单选题] *A)collectB) reduce(正确答案)C) developD) throw2. Furthermore, robot-based production increases product quality, improves workand leads to an optimized use of resources. In the sentence above, the words “an optimized” is closest in meaning to (). [单选题] *A)the worst way ofB)a legal way ofC)the best way of(正确答案)D) a common way3. Robotic technologies, such as navigation, motion control, sensing and cognition, will enable a broad range of innovations in today's products resulting, for example, in more flexible, environmentally friendly transport systems and intelligent household appliances. In the sentence above, the word “flexible” is closest in meaning to (). [单选题] *A)elastic(正确答案)B)breakableC) hardD)solid4.In addition, the technologies applicable to space robotics will enable a wide range of Earth-based exploration and material processing activities from automated undersea inspection to mining and mineral extraction under hazardous conditions. In the sentence above, the word “hazardous” is closest in meaning to (). [单选题] *A)easyB)difficultC) idealD) dangerous(正确答案)5. On the other hand, job profiles will improve as robots take over dangerous, dull and dirty jobs not only in the manufacturing industries. In the sentence above, the words “take over” is closest in meaning to (). [单选题] *A) take backB)take awayC) undertake(正确答案)D) take off6. Infrared sensors work in conjunction with a lens on the top of the machine that housesa 360° panoramic camera. In the sentence above, the word “houses” is closest in meaning to (). [单选题] *A)hidesB)liftsC) takesD)contains(正确答案)7. It's also worth mentioning that some 360 Eye press materials suggest that the vacuum can identify what kind of surface it's on, and will prioritize cleaning"easier"surfaces first. In the sentence above, the word “prioritize” is closest in meaning to (). [单选题] *A)put sth in natural waysB)treat sth as being more important than other things(正确答案)C) take sth away quicklyD) place sth in a reversed order8.Higher CO2 lets plants greenhouses cut water losses because they can take in enough of the gas without opening their stomata as widely. In the sentence above, the word “stomata” is closest in meaning to (). [单选题] *A)belliesB)pores(正确答案)C)windowsD)doors9. Currently, induction-loop systems and hearing aids can be used to improve the volume of ambient sounds, but cannot target and amplify specific sounds effectively. In the sentence above, the word “ambient” is closest in meaning to (). [单选题] *A)noisyB)lowerC) surrounding(正确答案)D)inner10. They now have a health system strengthening fund that is starting to invest considerable amount of money. In the sentence above, the word “considerable” is closest in meaning to (). [单选题] *A) large(正确答案)B)considerateC)smallD) thinkable11. Many of its glaciers are steadfastly retreating due to rising temperatures and declining precipitation. In the sentence above, the word “precipitation” is closest in meaning to (). [单选题] *A)predictionB) presentationC)rainfall(正确答案)D)flood12. We believe the reduction should be easily offset by the unexpected increase in investment growth, he said. In the sentence above, the word “offset” is closest in meaning to (). [单选题] *A)made up for(正确答案)B)made fromC)made out ofD) made up of13. Your spouse is the one person that you should be able to trust over all others, so when they hurt you badly, and then do so again, it's more devastating than nearly any other pain. In the sentence above, the word “devastating” is closest in meaning to (). [单选题] *A)complicatedB) incredibleC)enjoyableD) destructive(正确答案)14. He lost much of his right arm and suffered multiple injuries, including severe brain injury. In the sentence above, the word “multiple” is closest in meaning to (). [单选题] *A)Many(正确答案)B)fewC) hardD) light15. However, this position can mean you are forcing your body into a position that can exacerbate existing aches and strains in the joints and muscles.In the sentence above, the word “exacerbate” is closest in meaning to (). [单选题] *A)relieveB)worsen(正确答案)C)removeD)cure二、多选题:每题2.5分,计25分16. Which statements are not correct? () *A)The efficacy of the vaccine containing 3 antigens was greater than the vaccine containing 2 antigens.(正确答案)B)Students in group A scored better on the test than in group B.(正确答案)C)Our observations were similar to Chang et al.(正确答案)D)The protein content increased rapidly after treatment A compared to treatment.(正确答案)17.Which statements are correct on the uses of verbs? () *A.The mean age of participants was 32.01 years.(正确答案)B.The evaluation criteria for food products was defined on the basis of consumer preferences.C. Scientific knowledge of the risk factors for these diseases is limited.(正确答案)D.The design of the pressure relief valves are described in the next section.18.Which statements are correct on the uses of voices? () *A.The temperatures and humidity levels listed below are the averages of five measurements noted while the experiments were conducted.(正确答案)B.The temperatures and humidity levels listed below are the averages of five measurements noted while the experiments conducted.C. The concentration of Cu was maintained at 100 mM by adding the catalyst.(正确答案)D. The concentration of Cu maintained at 100 mM by adding the catalyst.19.Which statements are correct on the uses of voices? () *A. The increased airflow in the air-conditioned room caused the skin of the face to be dried.B. The increased airflow in the air-conditioned room caused the skin of the face to dry.(正确答案)C. Cardiac patients may require life support even after they discharge from the hospital.D. Cardiac patients may require life support even after they are discharged from the hospital.(正确答案)20.Which statements are correct on the uses of voices? () *A.When the mixture was cooled to 77K,the color disappeared.(正确答案)B.When the mixture was cooled to 77K,the color was disappeared.C.The size of the crystalline nanoparticles was found to range from 7 to 18 nm.(正确答案)D.The size of the crystalline nanoparticles was found to be ranged from 7 to 18 nm.21.Which statements are correct on the word order? () *A.We obtained written informed consent from the all participants.B.We obtained written informed consent from all the participants.(正确答案)C.First, pretreated 50 seeds were sown in individual pots.D.First, 50 pretreated seeds were sown in individual pots.(正确答案)22.Which statements are correct?() *A.The primary aerosol emissions increased sharply, followed by a steady decline.B.There was a sharp increase in the primary aerosol emissions, followed by a steady decline.(正确答案)C.Three individuals were reported by Smith et al. carrying this mutation.D.Three individuals were reported by Smith et al. to be carrying this mutation.(正确答案)23.Which statements are correct?() *A.The advantages of this tool can shed new light on the process of learning a second language.B.This tool can help shed new light on the process of learning a second language.(正确答案)C.The number of studies on the microstructure of this alloy increased rapidly in the past decade.(正确答案)D.Study of the microstructure of this alloy increased rapidly in the past decade.24.Which statements are correct? () *A.Of the 35 soil samples,we focused on those collected in Week 3.B.Of the 35 soil samples, those collected in Week 3 were focused on.(正确答案)C.As candidates for this treatment,we selected only patients who were too ill to wait for a kidney transplant.D.As candidates for this treatment, only patients who were too ill to wait for a kidney transplant were selected.(正确答案)25.Which statements are correct? () *A.We did not limit the time of evaluation, however, we instructed participants to answer spontaneously.B.We did not limit the time of evaluation; however,we instructed participants to answer spontaneously.(正确答案)C. Like charges repel, but unlike charges attract.(正确答案)D.Like charges repel, unlike charges attract.三、判断题:每题2.5分,计37.5分26.What exactly is the influence of television on children? [判断题] *对(正确答案)错27.Chemical analyses revealed that the ultra-fine particles were mostly composed of organic matter. [判断题] *对(正确答案)错28.The patient was diagnosed as lung cancer. [判断题] *对错(正确答案)29.He planned to leave home at dusk though there was thunder and lightning outdoors. [判断题] *对(正确答案)错30.He couldn’t get along well with English and disliked joining in English classes because he thought his teacher ignored him on purpose. [判断题] *对(正确答案)错31.His partner was concerned with him very much. [判断题] *对错(正确答案)32.In order to calm him down and settle his problem, she talked with him face to face and swapped a series of learning tips with him. [判断题] *对(正确答案)错33.The English spoken in these countries is based upon British English. [判断题] *对(正确答案)错34. The vase used to belong to a former castle. [判断题] *对(正确答案)错35.But when the country was at war, the enemy troops exploded the castle. [判断题] *对(正确答案)错36.Swifter, Higher and Stronger stands for the spirit of the Olympics. [判断题] *对(正确答案)错37.The volunteers in charge will be very strict. [判断题] *对(正确答案)错38.But under the help of new technology, electronic chips replaced tubes anda revolution of artificial intelligence has arisen. [判断题] *对错(正确答案)39.But wildlife today disappears or is in danger just because humans do harm to it. [判断题] *对(正确答案)错40.Not until we succeed in letting wildlife live in peace, can we smile at relief. [判断题] *对错(正确答案)。

相关文档
最新文档