文档库 最新最全的文档下载
当前位置:文档库 › 2008西工大博士考试英语真题答案及解析

2008西工大博士考试英语真题答案及解析

2008西工大博士考试英语真题答案及解析
2008西工大博士考试英语真题答案及解析

Part 1 Reading comprehension

Passage 1

Opinion poll surveys show that the public see scientists in a rather unflattering light.

Commonly, the scientist is also seen as being male. It is true that most scientists are male, but the picture of science as a male activity may be a major reason why fewer girls than boys opt for science, except when it comes to biology, which is seen as “female.”

The image most people have of science and scientists comes from their own experience of school science, and from the mass media. Science teachers themselves see it as a problem that so many school pupils find school science an unsatisfying experience, though over the last few years more and more pupils, including girls, have opted for science subjects.

In spite of excellent documentaries, and some good popular science magazines, scientific stories in the media still usually alternate between miracle and scientific threat. The popular stereotype of science is like the magic of fairy tales: it has potential for enormous good or awful harm. Popular fiction is full of “good” scientists saving the world, and “mad” scientists trying to destroy it.

From all the many scientific stories which might be given media treatment, those which are chosen are usually those which can be framed in terms of the usual news angles: novelty, threat, conflict or the bizarre. The routine and often tedious work of the scientist slips from view, to be replaced with a picture of scientists forever offending public moral sensibilities (as in embryo research), threatening public health (as in weapons research), or fighting it out with each other (in giving evidence at public enquiries such as those held on the issues connected with nuclear power).

The mass media also tends to over-personalize scientific work, depicting it as the product of individual genius, while neglecting the social organization which makes scientific work possible. A further effect of this is that science comes to be seen as a thing in itself: a kind of unpredictable force; a tide of scientific progress.

It is no such thing, of course. Science is what scientists do; what they do is what a particular kind of society facilitates, and what is done with their work depends very much on who has the power to turn their discoveries into technology, and what their interests are.

1. According to the passage, ordinary people have a poor opinion of science and scientists partly because ______.

A) of the misleading of the media

B) opinion polls are unflattering

C) scientists are shown negatively in the media

D) science is considered to be dangerous

2.. Fewer girls than boys study science because ______.

A) they think that science is too difficult

B) they are often unsuccessful in science at school

C) science is seen as a man’s job

D) science is considered to be tedious

3. Media treatment of science tends to concentrate on _____.

A) the routine, everyday work of scientists

B) discoveries that the public will understand

C) the more sensational aspects of science

D) the satisfactions of scientific work

4. According to the author, over-personalization of scientific work will lead science

A) isolation from the rest of the world

B) improvements on school system

C) association with “femaleness”

D) trouble in recruiting young talent

5.According to the author, what a scientist does _______.

A) should be attributed to his individual genius

B) depends on the coordination of the society

C) shows his independent power

D) is unpredictable

Keys:1-5 ACCAB(全国2010年英语六级考试冲刺试题)

Passage 2

No one can be a great thinker who does not realize that as a thinker it is her fi rst duty to follow her intellect to whatever conclusions it may lead. Truth gains more even by the errors of one who with due study and preparation, thinks for himself, than by the true opinions of those who only hold them because they do not suffer themselves to think. No that it is solely, of chiefly, to form great th inkers that freedom of thinking is required. One the contrary, it is as much or e ven more indispensable to enable average human beings to attain the mental stature which they are capable of. There have been and many again be great individual thinkers in a general atmosphere of mental slavery. But there never has been, nor ever will be, in that atmosphere an intellectually active people. Where any of heterodox speculation was for a time suspended, where there is a tacit convention that principles are not to be disputed: where the discussion of the greatest questions which can occupy humanity is considered to be clos ed, we cannot hope to find that generally high scale of mental activity which h as made some periods of history so remarkable. Never when controversy avoi ded the subjects which are large and important enough to kindle enthusiasm was the mind of a people stirred up from its foundation and the impulse given which raised even persons of the most ordinary intellect to something of the di gnity of thinking beings.

She who knows only her own side of the case knows little of that. Her reason s may be food, and no one may have been able to refute them. But if she s eq

ually unable to refute the reasons of the opposite side; if she does not so muc h as know what they are, she has no ground for preferring either opinion. The rational position for her would be suspension of judgment, and unless she con tents herself with that, she is either led by authority, or adopts, like the general ity of the world the side to which she feels the most inclination. Nor is it enoug h that she should heat the arguments of adversaries from her own teachers, p resented as they state them, and accompanied by what they offer as refutatio ns, That is not the way to do justice to the arguments, or bring them into real c ontact with her own mind. She must be able to hear them form persons who a ctually believe them; who defend them in earnest, and do their very utmost for them. She must know them in their most plausible and persuasive form; she must feel the whole force of the difficulty which the true view of the subject ha s to encounter and dispose of; else she will never really possess herself of the portion of truth which meets and removes that difficulty. Ninety-nine in a hund red of what are called educated persons are in this condition; even of those w ho can argue fluently for their opinions. Their conclusion may be true, but it mi ght be false for anything they know; they have never thrown themselves into t he mental position of those who think differently form them and considered wh at such persons may have to say; and consequently they do not, in any prope r sense of the word, know the doctrines which they themselves profess.

6. The best title for this passage is

[A] The Age of Reason [B] The need for Independent Thinking

[C] The Value of Reason [D] Stirring People's Minds

7. According to the author, it is always advisable to

[A] have opinions which cannot be refuted.

[B] adopt the point of view to which one feels the most inclination.

[C] be acquainted with the arguments favoring the point of view with which o ne disagrees,

[D] suspend heterodox speculation in favor of doctrinaire approaches.

8. According to the author, in a great period such as the Renaissance we ma y expect to find

[A] acceptance of truth [B] controversy over principles

[C] inordinate enthusiasm [D] a dread of heterodox speculation

9. According to the author, the person who holds orthodox beliefs without ex amination may be described in all of the following ways EXCEPT as

[A] enslaved by tradition [B] less than fully rational

[C] determinded on controversy [D] having a closed mind

10. It can be inferred from the passage that the author would be most likely t o agree with which of the following statements

[A] A truly great thinker makes no mistakes.

[B] Periods of intellectual achievement are periods of unorthodox reflection,

[C] The refutation of accepted ideas can best be provided by one's own teac hers.

[D] excessive controversy prevents clear thinking.

Vocabulary

1. stature 高度,境界,状况

2. heterodox 不合乎公认的标准的,异端的,异教的

3. tacit 心照不宣

4. refute 反驳

5. adversary 对立面,对手,敌人

6. plausible 善于花言巧语的/辞令的,似乎有理的/有可能的

7. doctrine 教义,学说

8. profess 表示,明言,承认,自称,信奉

难句译注

1. True gains more even by the errors of one who with due study and prepar ation, thinks for himself, then by the true opinions of those who only hold them because they do not suffer themselves to think.

[参考译文] 真理甚至从一个经过恰当研究和准备进行独立思考的人的错误中获得更多的东西,而从那些只是因为不予思考却持有正确的观点中获得的少(一种经过恰当的研究和准备进行独立思考的人犯的错误,另一种人是不予思考的却持有正确的观点,真理从前者错误中获得的东西比从后者的正确观点中获得的要多)。

2. mental slavery 思想禁锢,精神受奴役状态

3. Never when controversy avoided the subjects which are large and importa nt enough to kindle enthusiasm was the mind of a people stirred up from its fo undation and the impulse given which raised even persons of the most ordinar y intellect to something of the dignity of thinking beings.

[结构简析] 这是一句以Never否定词开头的倒装句,正常的句序应把never放在句中,形成:the mind of people was never stirred up from its foundations. [参考译文] 当辩论比开重大课题,重大到足以燃起/激起人们激/热情的课题时,那么一个民族的思想绝不会从天赋的情感和原始的基础上升华,甚至使最普通智力的人上升到优点庄严的思想家水平上。

4. The rational position for her would be suspension of judgement, and unles s she contents herself with that, she is either led by authority, or adopts, like th e generality of the world, the side to which she feels the most inclination.

[参考译文] 对她来说理智的立场是停止判断,而且除非她满足于这一点,否则,她不是为权威人物的观点所左右,后者就像世界上芸芸众生一样,倒向她感觉最倾向的一边。

5. That is not the way to do justice to the arguments, or bring them into teal c ontact with her own mind.

[结构简析] do justice to 公平对待,适当处理。 Bring…into contact with 使和……接触/联系。

[参考译文] 这不是对正确观点评价的方法,也不能使自己的思想真正接触到论点的实质。

6. She must know them in their most plausible and persuasive form; she mu st feel the whole force of the difficulty which the true view of the subject has to

encounter and dispose of; else she will never really possess herself of the po rtion of truth which meets and removes that difficulty.

[结构简析] most plausible and persuasive form 很善于辞令和有说服力形式。 possess oneself of 获得,据有,把……占为己有。them=arguments, else 否则的话。

7. Their conclusion may be true, but it might be false for anything they know; they have never thrown themselves into the mental position of those who thin k differently form them and considered what such persons may have to say; a nd consequently they do not, in any proper sense of the word, know the doctri nes which they themselves profess.

[结构简析] throw oneself into…position 设身处地,使自己处于……位置/地点。写作方法与文章大意

这是一篇由一般到具体,重要采用正反对比,推理的写作方法的文章,逻辑性强,正反论证,句子结构复杂冗长,分两段给出内容,第一段重点在:伟大的思想家的首要责任是奠定遵循自己智力所得出的结论。由此引起思想家和思想活跃的人民同时代环境的关系。只有思想后月的时期,才有伟大的思想家和活跃的人民,因为他们可以讨论重大主题,而在思想禁锢时期,只能产生个别伟大思想家。第二段具体的论证了独立思考涉及两方面,既如自己一方种种,也得知对手的一方种种(内容,推理,论点),才能真正获得真理。

Keys

6. B. 独立思考的必要性。见难句译注1。这里说明进行独立思考的人即使犯错误,真理也能从中获得东西,而那些懒于思考人,即使持有正确的观点,真理也难以获得东西。第一段还点明思想禁锢时期,即不能进行独立思考时期,难以讨论重大议题,产生不了活跃的人民,绝不会出现像辉煌的文艺复兴那种时期(见第二题注)。第二段也是围绕独立思考而写,只是从具体点着眼:人只知自己,不知对方无法获得真理,只有独立思考两方,才能不为权威所左右,不会跟着自己感觉走,最终知道自己的真正主张。A. 理性时代。C.驳斥的价值。D. 激发人民的思想。

7. C. 熟悉有利于自己不同意/反对观点的论点。这是作者在第二段讲述的重要论点。他认为一个人只知自己一方,推理极好,无人能反驳,却不知对方的推理,也不能够予以反驳的话,他就无权选择两方的任一论点,其理智位置是停止判断。否则她就会(像世界上芸芸众生那样)不是为权威所“引导”,就是跟着感觉(的倾向)走。其二,作者提出:光听自己的老师讲述对立面的论点,以及他们所提出的反驳论点。只是不够的,必须倾听那些人(他们真正相信对立的观点)的论点,并为此积极热情,竭尽全力辩护,才能使自己的思想和独立论点接触,公正的作出公正的判断。A. 具有不能驳斥的观点。B. 采取个人感觉最倾向的观点。 D. 停止有利于教条主义研究的异端思考。

8. B. 辩论原则问题。答案在第一段:在思想禁锢的气氛中,过去,现在可能会产生个别的思想家,但绝不会有思想活跃的人民,在那里有一种心照不宣的惯律:原则决不能讨论——认为占据人类心灵的最重大问题的讨论应封闭,我们不能期望看到一般高级的思想活动。这种思想活动曾使历史上某些时期光辉灿烂。而文艺复兴就是思想活动的顶峰时期,必然会讨论原则问题,所以选B 。A. 接

受真理,周经过讨论才能接受真理。C. 过度的热情。 D. 害怕异端思考。

9. C. 在辩论上,坚定不移。这是一道推断题,一般讲:持有未经检验的正统信仰的人不会独立思考,更不会怀疑他所信仰的东西。A. 为传统所奴役。B. 不怎么理智。D. 头脑闭塞。这种人必然受传统思想控制,不理智更不愿接受外界新鲜事物。

10. B. 在思想方面取得成就的时期就是进行非正统反思的时期。见3题注释。

A. 一个真正的思想家不犯错误。C. 一个人的老师最能提供所接受思想观点的反驳。D. 过度的辩论会制止清晰的思考。

(来自大学英语四级阅读理解精粹100篇(40)伟大的思想家)

Passage 3

Life comes only from other life. The offspring of a living thing is like its parents.

A bird is hatched from an egg produced by parent birds. A flower grows from seeds created by a parent flower. One creature passes the flame of life to another to another in a continuing cycle, thus preserving life on the earth.

In the mid-nineteenth century, biologists began to explore the questio9n of how so many different species of plants and animals had developed. A young English scientist named Charles Darwin traveled to an island off the coast of South America. There he observed many types of creatures that he had never seen. Darwin was struck by the fact that many of the animals that he saw lived nowhere else in the world; Then, on the neighboring islands, he studied many different species of birds.

As a result of his observations, Darwin brought about a theory of the evolution of human life. He knew that many creatures produce more offspring than can actually survive. Since not every young creature can survive, there is competition among the individuals in species for food, water, warmth, and space. In the struggle for existence, only the fittest, or the ones that are best able to change as their surroundings change, will succeed. Darwin called his theory “natural selection”, or the “survival of the fittest”. In his work The Origin of Species, he claimed that man has evolved from a lower form of life and that in fact all life on the earth has developed from a single, original cell. Over millions of years, through gradual change, development, and natural selection, all the different species of life that we know today have evolved.

Darwin’s ideas were not accepted by most people of his time, partly because they were against many religious views about the origin of mankind. In addition, many people were shocked at the idea that humans are animals and related to other forms of life, particularly that human beings were related to apes or monkeys millions of yeas ago. But all the evidence we have today shows that Darwin’s theory is true.

11. When studying the creatures on the islands, Charles Darwin was deeply

impressed by the fact that __________.

A. there were many rare creatures on the islands

B. there were different kinds of birds on the islands

C. the animals on the islands were unique

D. the plants and animals had developed fast on the islands

12. According to the first paragraph, it can be concluded that the quality of a

creature __________.

A. is decided by its parents’

B. is different from its parents’

C. has nothing to do with its parents

D. can be changed by its parents

13. What is mentioned about Darwin’s original idea in the third paragraph?

A. All the creatures on the earth are created by God.

B. All the creatures on the earth are lower forms of life.

C. All the creatures have their own life styles.

D. All the creatures have evolved from a single, original cell.

14. Darwin’s theory of natural selection is based on his observation that

__________.

A. all creatures try to conquer the other species

B. competition takes place among the creatures

C. food, water, and space are necessary to all the creatures

D. many creatures struggle for existence throughout their lives

15. Why did many people in the 19th century refuse to accept Darwin’s theory

according to the passage?

A. They doubted the evidence given by Darwin.

B. Darwin regarded human beings as apes and monkeys.

C. The theory was against their religious belief.

D. The theory was difficult to be tested by experiments

Keys:ominitted(来自2011年全国职称英语考前培训班模拟测试题)Part 2 Cloze (15 minutes, 15 points, 1 for each)

Most people who travel long distances complain of jetlag(喷气飞行时应).Jetlag makes business travelers less productive and more prone 1 making mistakes. It is actually caused by 2 of your "body clock" — a s mall cluster of brain cells that controls the timing of biological 3 . The b ody clock is designed for a 4 rhythm of daylight and darkness, so that it is thrown out of balance when it 5 daylight and darkness at the "wro ng" times in a new time zone. The 6 of jetlag often persist for days 7 the internal body clock slowly adjusts to the new time zone. Now a new anti -jetlag system is 8 that is based on proven 9 pioneering scientific res earch. Dr. Martin Moore-Ede has 10 a practical strategy to adjust the body clock much sooner to the new time zone 11 controlled exposure to bright light. The time zone shift is easy to accomplish and eliminates 12 of the discomfort of jetlag. A successful time zone shift depends on knowin

g the exact times to either 13 or avoid bright light. Exposure to light at

the wrong time can actually make jetlag worse. The proper schedule 14 light exposure depends a great deal on 15 travel plans. Data on a spe cific flight itinerary and the individual' s sleep 16 are used to produce a T rip Guide with 17 on exactly when to be exposed to bright light. When the Trip Guide calls 18 bright light you should spend time outdoors if p ossible. If it is dark outside, or the weather is bad, 19 you are on an a eroplane, you can use a special light device to provide the necessary light

20 for a range of activities such as reading, watching TV or working.

1.[A] from [B] of [C] for [D] to

2.[A] eruption [B] disruption [C] rupture [D] corruption

3.[A] actions [B] functions [C] behavior [D] reflection

4.[A] formal [B] continual [C] regular [D] circular

5.[A] experiences [B] possesses [C] encounters [D] retains

6.[A] signs [B] defects [C] diseases [D] symptoms

7.[A] if [B] whereas [C] while [D] although

8.[A] agreeable [B] available [C] adaptable [D] approachable

9.[A] extensive [B] tentative [C] broad [D] inclusive

10.[A] devised [B] scrutinized [C] visualized [D] recognized

11.[A] in [B] as [C] at [D] through

12.[A] more [B] little [C] most [D] least

13.[A] shed [B] retrieve [C] seek [D] attain

14.[A] in [B] for [C] on [D] with

15.[A] specific [B] complicated [C] unique [D] peculiar

16.[A] mode [B] norm [C] style [D] pattern

17.[A] directories [B] commentaries [C] instructions [D] specificati

ons

18.[A] up [B] off [C] on [D] for

19.[A] or [B] and [C] but [D] while

20.[A] spur [B] stimulus [C] agitation [D] acceleration

1-5 DBBCA 6-10 DCBAA 11-15 DCCBA 16-20 DCDAB

(来自考博英语完形填空冲刺模拟试题)

2015年西北工业大学自然辩证法考试试题及答案

2015年《自然辩证法概论》试题及解答 1.马克思恩格斯科学技术思想的基本内容? 答:一、科学技术的定义:马克思、恩格斯认为,科学建立在实践基础之上,是人们批判宗教和唯心主义的精神武器,是人们通过实践对自然的认识与解释,是人类对客观世界规律的理论概括,是社会发展的一般精神产品;技术在本质上体现了人对自然的实践关系。 二、基本内容如下: (1)科学的分类恩格斯对自然科学进行了分类。每一门科学都是分析某一个别的运动形式或一系列相互转化的运动形式,因此,科学分类就是这些运动形式本身依据其内部所固有的次序的分类和排列,而它的重要性也正是在这里。恩格斯将自然科学的研究对象规定为运动着的物体,并将科学分为数学、天文学、物理学、化学、生物学等。 (2)科学技术与哲学的关系恩格斯强调科学技术对哲学的推动作用,认为推动哲学家前进的,主要是自然科学和工业的强大面日益迅猛的进步。科学的发展也受到哲学的制约和影响。科学与哲学在研究对象上具有本质上的共同点和内在的一致性。科学研究作为一种认识活动,必须通过理论思维才能揭示对象的本质和规律,这就自然地与哲学发生紧密的关系。 (3)科学技术是生产力马克思提出了科学是生产力的思想,他认为,社会生产力不仅以物质形态存在,而且以知识形态存在,自然科学就是以知识形态为特征的一般社会生产力。 (五)科学技术的生产动因马克思认为自然科学本身的发展,“仍然是在资本主义生产的基础上进行的,这种资本主义生产第一次在相当大的程度上为自然科学创造了进行研究、观察、实验的物质手段。”恩格斯认为近代以来科学“以神奇的速度发展起来,那么,我们要再次把这个奇迹归功于生产。” (六)科学技术的社会功能科学革命的出现,打破了宗教神学关于自然的观点,自然科学从神学中解放出来,从些快速前进。科学与技术的结合,推动了产业革命,产业革命促使市民社会在经济结构和社会生产关系上了发生了全面变革。 马克思认为,科学技术的发展,首先必然引起生产方式的变革,也必然引起生产关系本身的变革。 (七)科学技术与社会制度马克思、恩格斯首先揭示了新兴资产阶级与自然科学的关系。其次揭示了资本主义制度下劳动者与科学技术的关系。再次,预见了只有在劳动中,科学才起到它真正的作用。同时也肯定了科学家个人在科学发展史上的重要作用。

哈工大博士英语考试冲刺试题三

哈工大博士英语考试冲刺试题三 Passage 1 The realm of product liability is one that has always put legal scholars and practitioners at odds. Viewed by some as genuine efforts to protect the public from dangerous goods and others as an excuse for dirty lawyers to sue rich companies, the matter has yet to be resolved. Product liability, and its implications for disgruntled consumers wishing to sue the makers of what they buy, continues to be debated. Those who argue that current product liability laws are positive assert that without such laws, manufacturers would be free to do as they please without regard for the safety of the consumers who buy their products. As a result, they argue, shoddy merchandise would emerge, with every possible corner cut in order to lower costs, at the expense of quality. Not only would the shoddy merchandise be a rip-off, however, but the products could likely be harmful as well. Proponents of this point of view hail the new wave of warning labels and increased quality assurance that has resulted from recent product liability legislation, confident in their conviction that it has made the American marketplace a safer place to shop. Opponents of the current status-quo, however, cite the overwhelming amount of litigation that has taken place as a result of stricter product liability. A moderate approach id advised by this group, between the necessary safeguards that would prevent abuse of the system by the companies and the excessive consumer-protection laws that allow producers to be sued at the drop of a hat. These people argue that greed and the alluring possibility of easy money lead unscrupulous buyers to look for any excuse to bring minor grievances to court, hoping for a million-dollar outcome. As the situation stands now, the former camp is getting its way, reflecting society's priority of safety over economics. Recent lobbying by producers have begun to shift the tide, however, as abuse of product liability laws continues and grows, courts are beginning to note the trend and take appropriate measures, casting a keener eye on such cases so as to distinguish between frivolous cases and more serious claims. In regard to the future of product liability legislation and its relation to our ever increasingly litigious society, only time will tell. 1.It is stated that consumers who bring product liability problems to litigation ____ A.Are primarily motivated by the possibility of quick money through a lawsuit B.Suffer injures from faulty merchandise and deserve appropriate compensation C.Will find their options limited in the future as product liability laws will move toward a more moderate position D.Bring their issues to litigation based on both legitimate and profit-seeking groups 2.Manufacturers in the text tend to ____ A.Invariable produce dangerous products that require legislation to ensure safety B.Hold profit and cost-cutting in higher regard than consumer safety C.Be the victims of a legal institution that unfairly targets them D.Be bound by the current system, causing them to take caution in producing their products 3.Those who favor less strict product liability laws believe that ____ A.Such laws curb producers' ability to create shoddy merchandise to attain greater profit B.The laws need to be modified to better serve the needs both consumers and producers

西工大有限元试题(附答案)

1.针对下图所示的3个三角形元,写出用完整多项式描述的位移模式表达式。 2.如下图所示,求下列情况的带宽: a) 4结点四边形元; b) 2结点线性杆元。 3.对上题图诸结点制定一种结点编号的方法,使所得带宽更小。图左下角的四边形在两种不同编号方式下,单元的带宽分别是多大? 4.下图所示,若单元是2结点线性杆单元,勾画出组装总刚后总刚空间轮廓线。系统的带宽是多大?按一右一左重新编号(即6变成3等)后,重复以上运算。 5. 设杆件1-2受轴向力作用,截面积为A ,长度为L ,弹性模量为E ,试写出杆端力F 1,F 2与杆端位移21,u u 之间的关系式,并求出杆件的单元刚度矩阵)(][e k 6.设阶梯形杆件由两个等截面杆件○ 1与○2所组成,试写出三个结点1、2、3的结点轴向力F 1,F 2,F 3与结点轴向位移321,,u u u 之间的整体刚度矩阵[K]。 7. 在上题的阶梯形杆件中,设结点3为固定端,结点1作用轴向载荷F 1=P ,求各结点的轴向位移和各杆的轴力。 8. 下图所示为平面桁架中的任一单元,y x ,为局部坐标系,x ,y 为总体坐标系,x 轴与x 轴的夹角为θ。 (1) 求在局部坐标系中的单元刚度矩阵 )(][e k (2) 求单元的坐标转换矩阵 [T]; (3) 求在总体坐标系中的单元刚度矩阵 )(][e k 9.如图所示一个直角三角形桁架,已知27/103cm N E ?=,两个直角边长度cm l 100=,各杆截面面积210cm A =,求整体刚度矩阵[K]。 10. 设上题中的桁架的支承情况和载荷情况如下图所示,按有限元素法求出各结点的位移与各杆的内力。 11. 进行结点编号时,如果把所有固定端处的结点编在最后,那么在引入边界条件时是否会更简便些? 12. 针对下图所示的3结点三角形单元,同一网格的两种不同的编号方式,单元的带宽分别是多大? 13. 下图所示一个矩形单元,边长分别为2a 与2b ,坐标原点取在单元中心。

考博英语(阅读理解)-试卷80.doc

考博英语(阅读理解)-试卷80 (总分:40.00,做题时间:90分钟) 一、Reading Comprehensio(总题数:4,分数:40.00) Too much alcohol dulls your senses, but a study in Japan shows that moderate drinkers have a higher IQ than teetotalers. Researchers at the National Institute for Longevity Sciences in Aichi Prefecture, 250 kilometers west of Tokyo, tested the IQs of 2000 people between the ages of 40 and 79. They found that, on average, men who drank moderately — defined as less than 540 milliliters of sake or wine a day — had an IQ that was 3. 3 points higher that men who did not drink at all. Women drinkers scored 2. 5 points higher than female teetotalers. The type of alcohol didn't influence the results. The volunteers tried a variety of tipples, which ranged from beer and whisky to wine and sake. The researchers are quick to point out that the results do not necessarily show that drinking will make you more intelligent. "It's very difficult to show a cause-effect relationship," says senior researcher Hiroshi Shimokata. "We screened subjects for factors such as income and education, but there may be other factors such as lifestyle and nutritional intake. " Shimokata says that people who drink sake, or Japanese rice wine, tend to eat more raw fish. This could be a factor in enhanced intelligence, as fish often contain essential fatty acids that have been linked to brain development. Similarly, wine drinkers eat a lot of cheese, which is not something Japanese people normally consume or buy. Shimokata says the high fat content of cheese is thought to be good for the brain. If alcoholic drinks are directly influencing IQ, Shimokata believes chemicals such as polyphenols could be the critical factor. They are known to have antioxidant properties and other beneficial effects on ageing bodies, such as dilating constricted coronary arteries. The study is part of a wider research project to find out why brain function deteriorates with age.(分数:10.00) (1).The Japanese study was carried out on______.(分数:2.00) A.the development of IQ B.the secret of longevity C.the brain food in a glass D.the amount of healthy drinking (2).The Japanese researchers found a higher IQ in______.(分数:2.00) A.female teetotalers than in male ones B.female drinkers than in male ones C.moderate drinkers D.teetotalers (3).When he says that it is very difficult to show cause-effect relationship, Shimokata means that______.(分数:2.00) A.the study failed to involve such variables as income and education B.he is doubtful of the findings of the investigation C.there are some other contributing factors D.the results were just misleading (4).From Shimokata's mention of fish and cheese we can infer that in enhancing intelligence______.(分数:2.00) A.sake or wine is a perfect match for fish and cheese B.they promote the drinking effect of sake or wine C.they are not as effective as sake and wine D.sake or wine is not alone (5).Based on the study, Shimokata would say that______.(分数:2.00) A.intelligence improves with age

西工大试题

西北工业大学考试试题(A卷) 2004 - 2005 学年第一学期 一、填空题:(每题 3 分,共计 30 分) 1. 塑性是指: ________________________________________________________ ________________________________________________ 。 2. 金属的超塑性可分为 _____ 超塑性和 _____ 超塑性两大类。 3. 金属单晶体变形的两种主要方式有: _____ 和 _____ 。 4. 影响金属塑性的主要因素有: _____ , _____ , _____ , _____ , _____ 。 5. 等效应力表达__________________________________________________ 。 6. 常用的摩擦条件及其数学表达式: __________________________________ ,__________________________________ 。 7. π平面是指: _____________________________________________________ ______________________________________________________________ _。 8. 一点的代数值最大的 __________ 的指向称为第一主方向,由第一主方 向顺时针转所得滑移线即为 _____线。 9. 平面变形问题中与变形平面垂直方向的应力σz=______________________ 10. 在有限元法中:应力矩阵 [S]= ________________________ , 单元内部各点位移{U}=[ ]{ } 二、简答题(共计 30 分) 1. 提高金属塑性的主要途径有哪些?( 8 分) 2. 纯剪切应力状态有何特点?( 6 分) 3. 塑性变形时应力应变关系的特点?( 8 分) 4. Levy-Mises 理论的基本假设是什么?( 8 分) 三、计算题(共计 40 分) 1 、已知金属变形体内一点的应力张量为Mpa ,求:( 18 分)(1)计算方向余弦为 l=1/ 2 , m=1/2 , n= 的斜截面上的正应力大小。(2)应力偏张量和应力球张量;

试题1-西北工业大学考试试题(卷)

诚信保证 本人知晓我校考场规则和违纪处分条例的有关规定,保证遵守考场规则,诚实做人。本人签字: 编号: 西北工业大学考试试题(卷) 2008-2009学年第1学期 开课学院航天学院课程航天器飞行力学学时 48 考试日期考试时间 2小时考试形式(闭)(A)卷题号一二三四五六七八九十总分得分 考生班级 2162、2163 学 号姓 名 一、名词解释(20分) 1、比冲 2、过载 3、二体问题 4、轨道摄动 5、星下点轨迹 6、临界轨道 7、顺行轨道 8、轨道转移 9、再入走廊 10、总攻角 注:1. 命题纸上一般不留答题位置,试题请用小四、宋体打印且不出框。 2. 命题教师和审题教师姓名应在试卷存档时填写。共2页 第1页

西北工业大学命题专用纸 二、简述(20分) 1、直接反作用原理 2、刚化原理(关于变质量物体质心运动方程和绕质心转动方程的描述) 3、瞬时平衡假设 4、开普勒三大定律 三、简答题(40分) 1、火箭产生控制力和控制力矩的方式有那些?写出各自的控制力和控制力矩计 算公式。 2、在什么条件下,一般空间弹道方程可以分解成纵向运动方程和侧向运动方 程? 3、自由飞行段的运动有哪些基本特征、轨迹是什么形状、特征参数有哪些、特 征参数与主动段终点参数有什么关系? 4、轨道要素有哪些,其意义和作用是什么? 5、卫星轨道的摄动因素有那些? 6、双椭圆轨道机动的特征速度的确定方法? 7、基于状态转移矩阵的双脉冲轨道机动的过程和特征速度的求解方法? 8、航天器再入轨道有哪些类型,各有什么特点? 四、推导题(20分) 1、推导齐奥尔柯夫斯基公式(理想速度与质量变化的关系) 2、推导二体问题基本方程 教务处印制 共2页 第2页

哈工大考博英语真题及答案

General English Admission Test For Non-English Major Ph.D. program (Harbin Institute of Technology) Passage One Questions 1-7 are based on the following passage: According to a recent theory, Archean-age gold-quartz vein systems were formed over two billion years ago from magmatic fluids that originated from molten granitelike bodies deep beneath the surface of the Earth. This theory is contrary to the widely held view that the systems were deposited from metamorphic fluids, that is, from fluids that formed during the dehydration of wet sedimentary rocks. The recently developed theory has considerable practical importance. Most of the gold deposits discovered during the original gold rushes were exposed at the Earth’s surface and were found because the y had shed trails of alluvial gold that were easily traced by simple prospecting methods. Although these same methods still leas to an occasional discovery, most deposits not yet discovered have gone undetected because they are buried and have no surface expression. The challenge in exploration is therefore to unravel the subsurface geology of an area and pinpoint the position of buried minerals. Methods widely used today include analysis of aerial images that yield a broad geological overview, geophysical techniques that provide data on the magnetic, electrical, and mineralogical properties of the rocks being investigated, and sensitive chemical tests that are able to detect : the subtle chemical halos that often envelop mineralization. However, none of these high-technology methods are of any value if the sites to which they are applied have never mineralized, and to maximize the chances of discovery the explorer must therefore pay particular attention to selecting the ground formations most likely to be mineralized. Such ground selection relies to varying degrees on conceptual models, which take into account theoretical studies of relevant factors. These models are constructed primarily from empirical observations of known mineral deposits and from theories of ore-forming processes. The explorer uses the models to identify those geological features that are critical to the formation of the mineralization being modeled, and then tries to select areas for exploration that exhibit as many of the critical features as possible. 1. The author is primarily concerned with . A. advocating a return to an older methodology. B. explaining the importance of a recent theory. C. enumerating differences between two widely used methods D. describing events leading to a discovery 2. According to passage, the widely held view of Archean-age gold-quartz vein

2017年武汉大学考博英语真题及答案

2017年武汉大学考博英语真题及答案 注意:所有的答题内容必须写在答案纸上,凡写在试题或草稿纸上的一律无效。 Part I Reading Comprehension (2’×20 = 40 points) Directions: In this part of the test, there will be 5 passages for you to read. Each passage is followed by 4 questions or unfinished statements, and each question or unfinished statement is followed by four choices marked A, B, C and D. You are to decide on the best choice by blackening the corresponding letter on the ANSWER SHEET. Passage One Mr Gordon is right that the second industrial revolution involved never-to-be-repeated changes. But that does not mean that driverless cars count for nothing. Messrs Erixon and Weigel are also right to worry about the West’s dismal recent record in producing new companies. But many old firms are not run by bureaucrats and have reinvented themselves many times over: General Electric must be on at least its ninth life. And the impact of giant new firms born in the past 20 years such as Uber, Google and Facebook should not be underestimated: they have all the Schumpeterian characteristics the authors admire. On the pessimists’ side the strongest argument relies not on closely watching corporate and investor behavior but rather on macro-level statistics on productivity. The figures from recent years are truly dismal. Karim Foda, of the Brookings Institution, calculates that labor productivity in the rich world is growing at its slowest rate since 1950. Total factor productivity (which tries to measure innovation) has grown at just 0.1% in advanced economies since 2004, well below its historical average. Optimists have two retorts. The first is that there must be something wrong

2017武大考博英语试题及答案

武汉大学 2017年攻读博士学位研究生外语综合水平考试试题 (满分值100分) 科目名称:英语科目代码:1101 注意:所有的答题内容必须写在答案纸上,凡写在试题或草稿纸上的一律无效。 Part I Reading Comprehension (2’×20 = 40 points) Directions:In this part of the test, there will be 5 passages for you to read. Each passage is followed by 4 questions or unfinished statements, and each question or unfinished statement is followed by four choices marked A, B, C and D. You are to decide on the best choice by blackening the corresponding letter on the ANSWER SHEET. Passage One Mr Gordon is right that the second industrial revolution involved never-to-be-repeated changes. But that does not mean that driverless cars count for nothing. Messrs Erixon and Weigel are also right to worry about the West’s dismal recent record in producing new companies. But many old firms are not run by bureaucrats and have reinvented themselves many times over: General Electric must be on at least its ninth life. And the impact of giant new firms born in the past 20 years such as Uber, Google and Facebook should not be underestimated: they have all the Schumpeterian characteristics the authors admire. On the pessimists’ side the strongest argument relies not on closely watching corporate and investor behavior but rather on macro-level statistics on productivity. The figures from recent years are truly dismal. Karim Foda, of the Brookings Institution, calculates that labor productivity in the rich world is growing at its slowest rate since 1950. Total factor productivity (which tries to measure innovation) has grown at just 0.1% in advanced economies since 2004, well below its historical average. Optimists have two retorts. The first is that there must be something wrong with the figures. One possibility is that they fail to count the huge consumer surplus given away free of charge on the internet. But this is unconvincing. The official figures may well be understating the impact of the internet revolution, just as they downplayed the impact of electricity and cars in the past, but they are not understating it enough to explain the recent decline in productivity growth. Another, second line of argument that the productivity revolution has only just begun is more persuasive. Over the past decade many IT companies may have focused on things that were more “fun than fundamental” in Paul Krugman’s phrase.But Silicon Valley’s best companies are certainly focusing on things that change the material world.

2015年北师大考博英语真题试卷

2015年北京师范大学考博英语真题试卷 (总分68, 做题时间90分钟) 1. Reading Comprehension The human ear contains the organ for hearing and the organ for balance. Both organs involve fluid-filled channels containing hair cells that produce electrochemical impulses when the hairs are stimulated by moving fluid. The ear can be divided into three regions: outer, middle, and inner. The outer ear collects sound waves and directs them to the eardrum separating the outer ear from the middle ear. The middle ear conducts sound vibrations through three small bones to the inner ear. The inner ear is a network of channels containing fluid that moves in response to sound or movement. To perform the function of hearing, the ear converts the energy of pressure waves moving through the air into nerve impulses that me brain perceives as sound. Vibrating objects, such as the vocal cords of a speaking person, create waves in me surrounding air. These waves cause the eardrum to vibrate with the same frequency. The three bones of the middle ear amplify and transmit the vibrations to the oval window, a membrane on the surface of the cochlea, the organ of hearing. Vibrations of me oval window produce pressure waves in the fluid inside me cochlea. Hair cells in the cochlea convert the energy of the vibrating fluid into impulses that travel along the auditory nerve to the brain. The organ for balance is also located in the inner ear. Sensations related to body position are generated much like sensations of sound. Hair cells in the inner ear respond to changes in head position with respect to gravity and movement. Gravity is always pulling down on the hairs, sending a constant series of impulses to the brain. When the position of the head changes—as when the head bends forward—the force on the hair cells changes its output of nerve impulses. The brain then interprets these changes to determine the head's new position. 1. What can be inferred about the organs for hearing and balance? A Both organs evolved in humans at the same time. B Both organs send nerve impulses to the brain. C Both organs contain the same amount of fluid. D Both organs are located in me ear's middle region. 2. Hearing involves all of the following EXCEPT______. A motion of the vocal cords so that they vibrate B stimulation of hair cells in fluid-filled channels C amplification of sound vibrations

相关文档
相关文档 最新文档