2002年真题及解析汇报

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2002考研真题答案解析

2002考研真题答案解析

2002考研真题答案解析考研真题答案解析是一项重要的学习资源,它能够帮助考生了解历年考试的题型、难度以及命题趋势。

以下是基于2002年考研真题的答案解析示例:2002年考研真题答案解析一、阅读理解在2002年的考研英语阅读理解部分,考生们面对的是四篇不同主题的文章,每篇文章后面都附有五个问题。

这些文章涵盖了科技、教育、社会等多个领域,考察了考生的阅读速度、理解力和分析能力。

1. 第一篇文章讨论了网络技术对教育的影响。

正确答案主要集中在对文章主旨的把握和细节的理解上。

例如,问题1要求考生概括文章的主旨,正确答案应指出网络技术对教育的积极影响。

2. 第二篇文章探讨了城市化进程中出现的问题。

考生需要通过分析文章中的论点和论据来回答问题,如问题3询问城市化带来的具体问题,考生应从文章中找到相关信息并进行总结。

3. 第三篇文章是一篇科技论文,讨论了某种新型材料的特性。

问题4要求考生理解并解释文中的专业术语,这要求考生具备一定的专业背景知识。

4. 第四篇文章是一篇社论,对当前的社会现象进行了批评。

问题5要求考生分析作者的观点和态度,这需要考生能够从文章的语气和用词中捕捉作者的情感色彩。

二、完形填空完形填空部分通常包含一篇短文,其中一些单词或短语被省略,考生需要从四个选项中选择最合适的填入空格。

2002年的完形填空考查了考生的语境理解能力和词汇运用能力。

1. 正确答案的选择往往需要考虑上下文的逻辑关系和语法结构。

例如,如果空格前有动词,那么选项中应选择与之匹配的名词或动名词。

2. 有时,正确答案的确定还需要依赖于固定搭配或习惯用法。

考生在平时的学习中应注重积累这类知识。

三、翻译翻译部分要求考生将中文翻译成英文,或将英文翻译成中文。

2002年的翻译题目考查了考生的语言转换能力和对语言细微差别的把握。

1. 中译英部分,考生需要注意中英文表达习惯的差异,避免直译,而应寻求自然流畅的英文表达方式。

2. 英译中部分,考生应准确理解原文的意思,并尽量使用地道的中文表达,同时注意保持原文的风格和语气。

2002-数三真题、标准答案及解析

2002-数三真题、标准答案及解析

X 的简单随机样本,则未知参数 θ 的矩估计量为______
【答】
1 n ∑ X i −1 n i =1
北京市海淀区王庄路 1 号清华同方科技广场 B 座 609 -3电话: 62701055
培训网:
2002 年全国硕士研究生入学统一考试 数学试题解析点评
x y z
Fx' = ( x + 1)e x , Fy' = −( y + 1)e y , Fz' = −( z + 1)e z .

F' F' x + 1 x − z ∂z y + 1 y−z ∂z e , =− y = e , =− x = F 'z z + 1 F 'z z + 1 ∂x ∂y
+∞
水木艾迪考研辅导班命题研究中心
【详解】因为 E ( X ) = 所以,由 E ( X ) = X =

0
xe −( x −θ ) dx = θ + 1,
1 n 1 n , 1 X 即 θ + = ∑ i ∑ Xi, n i =1 n i =1 1 n ∑ X i − 1. n i =1
$= 得参数 θ 的矩估计量为 θ
x →ξ
(C) 对 f (a ) = f (b) 时,存在 ξ ∈ (a, b) ,使 f '(ξ ) = 0 (D) 存在. ξ ∈ (a, b) ,使 【答】 [ B] 【详解】 由题设, f ( x) 在 ξ (ξ ∈ (a, b) 处可导,从而连续, 故有 lim[ f ( x ) − f (ξ )] = 0. 应选(B).
n →∞
1 1 n (1− 2 a ) n − 2na + 1 n 1 1− 2 a = e1− 2 a ] = lim[1 + ] n →∞ n(1 − 2a ) n(1 − 2a) 1 n − 2na + 1 n 1 ] = ln e1− 2 a = n(1 − 2a ) 1 − 2a

2002年高考试卷

2002年高考试卷

2002年高考试卷一、基础知识(18分,每小题3分)1. 下列词语中加点的字的读音,全都不相同的一组是()A. 盐碱箴言呼喊减员增效感激涕零。

B. 阐述弹药禅让肆无忌惮殚精竭虑。

C. 束缚薄荷簿册赤膊上阵博大精深。

D. 滇池嗔怒缜密精卫填海谨小慎微。

2. 下列各组词语中,有错别字的一组是()A. 留恋流连忘返厉害利害得失。

B. 质疑不容置疑符合随声附合。

C. 变换变幻莫测旁证旁征博引。

D. 株连珠联璧合大意微言大义。

3. 对下列词语意义的解释,正确的一组是()A. 过错(过失、错误)过犹不及(过头或不够都不好)过瘾(满足癖好)闻过则喜(听到以后就感到高兴)B. 道义(道德、正义)道听途说(在道路上听到并传说)道歉(表示歉意)能说会道(善于言辞、很会说话)C. 工会(职工团体)适逢其会(恰巧碰上了那次聚会)会谈(多人商谈)心领神会(不用明说就已经领悟)D. 张望(向远处看)剑拔弩张(拔出刀剑、把箭射出)张榜(贴出文告)虚张声势(假装、夸大自己的气势)4. 下列各句中加点的成语的使用,恰当的一句是()A. 面对光怪陆离的现代观念,他们能从现实生活的感受出发,汲取西方艺术的精华,积极探索新的艺术语言。

B. 几乎所有造假者都是这样,随便找几间房子、拉上几个人就开始生产,于是大量的垃圾食品厂就雨后春笋般地冒出来了。

C. 整改不光是说在口头上,更要落实到行动上,相信到下一次群众评议的时候,大家对机关作风的变化一定都会有口皆碑。

D. 加入世贸组织(WTO)后汽车价格变化备受关注,但作为市场主力的几家汽车大厂,三四个月以来却一直偃旗息鼓,没有太大动作。

5. 依次填入下列各句横线处的词语,最恰当的一组是()中美关系_____动荡,不符合双方的根本利益。

你比他只是_____差一点,其实两人不相上下。

这几天我_____接到一些莫名其妙的电子邮件。

A. 一再多少往往。

B. 再三多少常常。

C. 一再稍微常常。

D. 再三稍微往往。

2002年真题及解析(word版)

2002年真题及解析(word版)

2002年全国攻读硕士学位研究生入学考试英语试题Section I Use of EnglishDirections:Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C OR D on ANSWER SHEET 1. (10 points)Comparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 16th centuries. Yet much had happened 1 . As was discussed before, it was not 2 the 19th century that the newspaper became the dominant pre-electronic_ 3 _ ,following in the wake of the pamphlet and the book and in the 4 of the periodical. It was during the same time that the communications revolution 5 up, beginning with transport, the railway, and leading 6 through the telegraph, the telephone, radio, and motion pictures 7 the 20th century world of the motor car and the air plane. Not everyone sees that Process in 8 . It is important to do so.It is generally recognized, 9 , that the introduction of the computer in the early 20th century, 10 by the invention of the integrated circuit during the 1960s, radically changed the process, 11 its impact on the media was not immediately 12 . As time went by, computers became smaller and more powerful, and they became “personal” too, as well as 13 , with display becoming sharper and storage 14 increasing. They were thought of, like people, 15 generations, with the distance between generations much 16 .It was within the computer age that the term “information society” began to be widely used to describe the 17 within which we now live. The communications revolution has 18 both work and leisure and how we think and feel both about place and time, but there have been 19 view about its economic, political, social and cultural implication s. “Benefits” have been weighed 20 “harmful” outcomes. And generalizations have proved difficult.1. [A]between [B]before [C]since [D]later2. [A]after [B]by [C]during [D]until3. [A]means [B]method [C]medium [D]measure4. [A]process [B]company [C]light [D]form5. [A]gathered [B]speeded [C]worked [D]picked6. [A]on [B]out [C]over [D]off7. [A]of [B]for [C]beyond [D]into8. [A]concept [B]dimension [C]effect [D]perspective9. [A]indeed [B]hence [C]however [D]therefore10. [A]brought [B]followed [C]stimulated [D]characterized11. [A]unless [B]since [C]lest [D]although12. [A]apparent [B]desirable [C]negative [D]plausible13. [A]institutional [B]universal [C]fundamental [D]instrumental14. [A]ability [B]capability [C]capacity [D]faculty15. [A]by means of [B]in terms of [C]with regard to[D]in line with16. [A]deeper [B]fewer [C]nearer [D]smaller17. [A]context [B]range [C]scope [D]territory18. [A]regarded [B]impressed [C]influenced [D]effected19. [A]competitive [B]controversial [C]distracting [D]irrational20. [A]above [B]upon [C]against [D]withSection II Reading ComprehensionPart ADirections:Read the following four texts. Answer the questions below each text by choosing [A], [B], [C] or [D]. Mark your answers on ANSWER SHEET 1. (40 points)Text 1If you intend using humor in your talk to make people smile, you must know how to identify shared experiences and problems. Your humor must be relevant to the audience and should help to show them that you are one of them or that you understand their situation and are in sympathy with their point of view. Depending on whom you are addressing, the problems will be different. If you are talking to a group of managers, you may refer to the disorganized methods of their secretaries; alternatively if you are addressing secretaries, you may want to comment on their disorganized bosses.Here is an example, which I heard at a nurses’ convention, of a story which works well because the audience all shared the same view of doctors. A man arrives in heaven and is being shown around by St. Peter. He sees wonderful accommodations, beautiful gardens, sunny weather, and so on. Everyone is very peaceful, polite and friendly until, waiting in a line for lunch, the new arrival is suddenly pushed aside by a man in a white coat, who rushes to the head of the line, grabs his food and stomps over to a table by himself. “Who is that?”the new arrival asked St. Peter. “Oh, that’s God,” came the reply, “but sometimes he thinks he’s a doctor.”If you are part of the group which you are addressing, you will be in a position to know the experiences and problems which are common to all of you and it’ll be appropriate for you to make a passing remark about the inedible canteen food or the chairman’s notorious bad taste in ties. With other audiences you mustn’t attempt to cut in with humor as they will resent an outsider making disparaging remarks about their canteen or their chairman. You will be on safer ground if you stick to scapegoats like the Post Office or the telephone system.If you feel awkward being humorous, you must practice so that it becomes more natural. Include a few casual and apparently off-the-cuff remarks which you can deliver in a relaxed and unforced manner. Often it’s the delivery which causes theaudience to smile, so speak slowly and remember that a raised eyebrow or an unbelieving look may help to show that you are making a light-hearted remark.Look for the humor. It often comes from the unexpected. A twist on a familiar quote “If at first you don’t succeed, give up”or a play on words or on a situation. Search for exaggeration and understatement. Look at your talk and pick out a few words or sentences which you can turn about and inject with humor.21. To make your humor work, you should .[A] take advantage of different kinds of audience[B] make fun of the disorganized people[C] address different problems to different people[D] show sympathy for your listeners22. The joke about doctors implies that, in the eyes of nurses, they are .[A] impolite to new arrivals[B] very conscious of their godlike role[C] entitled to some privileges[D] very busy even during lunch hours23. It can be inferred from the text that public services .[A] have benefited many people[B] are the focus of public attention[C] are an inappropriate subject for humor[D] have often been the laughing stock24. To achieve the desired result, humorous stories should be delivered .[A] in well-worded language[B] as awkwardly as possible[C] in exaggerated statements[D] as casually as possible25. The best title for the text may be .[A] Use Humor Effectively[B] Various Kinds of Humor[C] Add Humor to Speech[D] Different Humor StrategiesText 2Since the dawn of human ingenuity, people have devised ever more cunning tools to cope with work that is dangerous, boring, burdensome, or just plain nasty. That compulsion has resulted in robotics—the science of conferring various human capabilities on machines. And if scientists have yet to create the mechanical version of science fiction, they have begun to come close.As a result, the modern world is increasingly populated by intelligent gizmos whose presence we barely notice but whose universal existence has removed much human labor. Our factories hum to the rhythm of robot assembly arms. Our banking is done at automated teller terminals that thank us with mechanical politeness for thetransaction. Our subway trains are controlled by tireless robot-drivers. And thanks to the continual miniaturization of electronics and micro-mechanics, there are already robot systems that can perform some kinds of brain and bone surgery with submillimeter accuracy—far greater precision than highly skilled physicians can achieve with their hands alone.But if robots are to reach the next stage of laborsaving utility, they will have to operate with less human supervision and be able to make at least a few decisions for themselves—goals that pose a real challenge. “While we know how to tell a robot to handle a specific error," says Dave Lavery, manager of a robotics program at NASA, “we can't yet give a robot enough ‘common sense’ to reliably interact with a dynamic world.”Indeed the quest for true artificial intelligence has produced very mixed results. Despite a spell of initial optimism in the 1960s and 1970s when it appeared that transistor circuits and microprocessors might be able to copy the action of the human brain by the year 2010, researchers lately have begun to extend that forecast by decades if not centuries.What they found, in attempting to model thought, is that the human brain's roughly one hundred billion nerve cells are much more talented—and human perception far more complicated—than previously imagined. They have built robots that can recognize the error of a machine panel by a fraction of a millimeter in a controlled factory environment. But the human mind can glimpse a rapidly changing scene and immediately disregard the 98 percent that is irrelevant, instantaneously focusing on the monkey at the side of a winding forest road or the single suspicious face in a big crowd. The most advanced computer systems on Earth can't approach that kind of ability, and neuroscientists still don’t know quite how we do it.26. Human ingenuity was initially demonstrated in .[A] the use of machines to produce science fiction.[B] the wide use of machines in manufacturing industry.[C] the invention of tools for difficult and dangerous work.[D] the elite’s cunning tackling of dangerous and boring work.27. The word “gizmos” (line 1, paragraph 2) most probably means .[A] programs [B] experts [C] devices [D] creatures28. According to the text, what is beyond man's ability now is to design a robotthat can .[A] fulfill delicate tasks like performing brain surgery.[B] interact with human beings verbally.[C] have a little common sense.[D] respond independently to a changing world.29. Besides reducing human labor, robots can also .[A] make a few decisions for themselves.[B] deal with some errors with human intervention.[C] improve factory environments.[D] cultivate human creativity.30. The author uses the example of a monkey to argue that robots are .[A] expected to copy human brain in internal structure.[B] able to perceive abnormalities immediately.[C] far less able than human brain in focusing on relevant information.[D] best used in a controlled environment.Text 3Could the bad old days of economic decline be about to return? Since OPEC agreed to supply-cuts in March, the price of crude oil has jumped to almost $26 a barrel, up from less than $10 last December. This near-tripling of oil prices calls up scary memories of the 1973 oil shock, when prices quadrupled, and 1979-1980, when they also almost tripled. Both previous shocks resulted in double-digit inflation and global economic decline. So where are the headlines warning of gloom and doom this time?The oil price was given another push up this week when Iraq suspended oil exports. Strengthening economic growth, at the same time as winter grips the northern hemisphere, could push the price higher still in the short term.Yet there are good reasons to expect the economic consequences now to be less severe than in the 1970s. In most countries the cost of crude oil now accounts for a smaller share of the price of petrol than it did in the 1970s. In Europe, taxes account for up to four-fifths of the retail price, so even quite big changes in the price of crude have a more muted effect on pump prices than in the past.Rich economies are also less dependent on oil than they were, and so less sensitive to swings in the oil price. Energy conservation, a shift to other fuels and a decline in the importance of heavy, energy-intensive industries have reduced oil consumption. Software, consultancy and mobile telephones use far less oil than steel or car production. For each dollar of GDP (in constant prices) rich economies now use nearly 50% less oil than in 1973. The OECD estimates in its latest Economic Outlook that, if oil prices averaged $22 a barrel for a full year, compared with $13 in 1998, this would increase the oil import bill in rich economies by only 0.25-0.5% of GDP. That is less than one-quarter of the income loss in 1974 or 1980. On the other hand, oil-importing emerging economies—to which heavy industry has shifted—have become more energy-intensive, and so could be more seriously squeezed.One more reason not to lose sleep over the rise in oil prices is that, unlike the rises in the 1970s, it has not occurred against the background of general commodity-price inflation and global excess demand. A sizable portion of the world is only just emerging from economic decline. The Economist’s commodity price index is broadly unchanging from a year ago. In 1973 commodity prices jumped by 70%, and in 1979 by almost 30%.31. The main reason for the latest rise of oil price is_______[A] global inflation. [B] reduction in supply.[C]fast growth in economy. [D] Iraq’s suspension of exports.32. It can be inferred from the text that the retail price of petrol will go updramatically if______.[A] price of crude rises. [B] commodity prices rise.[C] consumption rises. [D] oil taxes rise.33. The estimates in Economic Outlook show that in rich countries_______.[A]heavy industry becomes more energy-intensive.[B]income loss mainly results from fluctuating crude oil prices.[C]manufacturing industry has been seriously squeezed.[D]oil price changes have no significant impact on GDP.34. We can draw a conclusion from the text that_______.[A]oil-price shocks are less shocking now.[B]inflation seems irrelevant to oil-price shocks.[C]energy conservation can keep down the oil prices.[D]the price rise of crude leads to the shrinking of heavy industry.35. From the text we can see that the writer seems__________.[A]optimistic. [B]sensitive. [C]gloomy. [D]scared.Text 4The Supreme Court’s decisions on physician-assisted suicide carry important implications for how medicine seeks to relieve dying patients of pain and suffering.Although it ruled that there is no constitutional right to physician-assisted suicide, the Court in effect supported the medical principle of “double effect”, a centuries-old moral principle holding that an action having two effects—a good one that is intended and a harmful one that is foreseen—is permissible if the actor intends only the good effect.Doctors have used that principle in recent years to justify using high doses of morphine to control terminally ill patients’pain, even though increasing dosages will eventually kill the patient.Nancy Dubler, director of Montefiore Medical Center, contends that the principle will shield doctors who “until now have very, very strongly insisted that they could not give patients sufficient medication to control their pain if that might hasten death”.George Annas, chair of the health law department at Boston University, maintains that, as long as a doctor prescribes a drug for a legitimate medical purpose, the doctor has done nothing illegal even if the patient uses the drug to hasten death. “It’s like surgery,” he says. “We don’t call those deaths homicides because the doctors didn’t intend to kill their patients, although they risked their death. If you’re a physician, you can risk your patient’s suicide as long as you don’t intend their suicide.”On another level, many in the medical community acknowledge that the assisted-suicide debate has been fueled in part by the despair of patients for whom modern medicine has prolonged the physical agony of dying.Just three weeks before the Court’s ruling on physician-assisted suicide, theNational Academy of Science (NAS) released a two-volume report, Approaching Death: Improving Care at the End of Life. It identifies the undertreatment of pain and the aggressive use of “ineffectual and forced medical procedures that may prolong and even dishonor the period of dying” as the twin problems of end-of-life care.The profession is taking steps to require young doctors to train in hospices, to test knowledge of aggressive pain management therapies, to develop a Medicare billing code for hospital-based care, and to develop new standards for assessing and treating pain at the end of life.Annas says lawyers can play a key role in insisting that these well-meaning medical initiatives translate into better care. “Large numbers of physicians seem unconcerned with the pain their patients are needlessly and predictably suffering”, to the extent that it constitutes “systematic patient abuse”. He says medical licensing boards “must make it clear...that painful deaths are p resumptively ones that are incompetently managed and should result in license suspension”.36. From the first three paragraphs, we learn that .[A] doctors used to increase drug dosages to control their patients’pain[B] it is still illegal for doctors to help the dying end their lives[C] the Supreme Court strongly opposes physician-assisted suicide[D] patients have no constitutional right to commit suicide37. Which of the following statements its true according to the text?[A] Doctors will be held guilty if they risk their patients’death.[B] Modern medicine has assisted terminally ill patients in painless recovery.[C] The Court ruled that high-dosage pain-relieving medication can beprescribed.[D] A doctor’s medication is no longer justified by his intentions.38. According to the NAS’s report, one of the problems in end-of-life care is .[A] prolonged medical procedures [B] inadequate treatment of pain[C] systematic drug abuse [D] insufficient hospital care39. Which of the following best defines the word “aggressive”(line 4, paragraph7)?[A] Bold. [B] Harmful. [C] Careless. [D] Desperate40. George Annas would probably agree that doctors should be punished if they .[A] manage their patients incompetently[B] give patients more medicine than needed[C] reduce drug dosages for their patients[D] prolong the needless suffering of the patientsPart BDirections:Read the following text carefully and then translate the underlined segments into Chinese. Your translation should be written clearly on ANSWER SHEET 2. (10 points)Almost all our major problems involve human behavior, and they cannot be solved by physical and biological technology alone. What is needed is a technology of behavior, but we have been slow to develop the science from which such a technology might be drawn.(41)One difficulty is that almost all of what is called behavioral science continues to trace behavior to states of mind, feelings, traits of character, human nature, and so on. Physics and biology once followed similar practices and advanced only when they discarded them. (42)The behavioral sciences have been slow to change partly because the explanatory items often seem to be directly observed and partly because other kinds of explanations have been hard to find. The environment is obviously important, but its role has remained obscure. It does not push or pull, it selects, and this function is difficult to discover and analyze.(43)The role of natural selection in evolution was formulated only a little more than a hundred years ago, and the selective role of the environment in shaping and maintaining the behavior of the individual is only beginning to be recognized and studied. As the interaction between organism and environment has come to be understood, however, effects once assigned to states of mind, feelings, and traits are beginning to be traced to accessible conditions, and a technology of behavior may therefore become available. It will not solve our problems, however, until it replaces traditional prescientific views, and these are strongly entrenched. Freedom and dignity illustrate the difficulty. (44)They are the possessions of the autonomous(self-governing)man of traditional theory, and they are essential to practices in which a person is held responsible for his conduct and given credit for his achievements. A scientific analysis shifts both the responsibility and the achievement to the environment. It also raises questions concerning “values”. Who will use a technology and to what ends? (45)Until these issues are resolved, a technology of behavior will continue to be rejected, and with it possibly the only way to solve our problems.Section III Writing46. Directions:Study the following picture carefully and write an essay entitled “Cultures National and International”.In the essay you should1. describe the picture and interpret its meaning, and2. give your comment on the phenomenon.You should write about 200 words neatly on ANSWER SHEET 2. (20 points)An American girl in traditional Chinese costume(服装)第一部分英语知识应用试题解析一、文章总体分析本文主要介绍了计算机的发展对通信革命及人们的生存方式产生的影响。

2002年考研数学(三)真题及详细解析

2002年考研数学(三)真题及详细解析

2002 年全国硕士研究生入学统一考试数学三试题及解析一、填空题(本题共5小题,每小题3分,满分15分.把答案填在题中横线上) ⑴ 设常数12a ≠,则21lim ln[]________(12)n n n na n a →∞-+=-. 【分析】将所求极限转换为1ln[1](12)lim1n n a n→∞+-,利用等价无穷小代换化简求解,或利用重要极限。

【详解】法一:11ln[1]211(12)(12)lim ln[]limlim 11(12)12nn n n n na n a n a n a an n→∞→∞→∞+-+--===-- 法二:11(12)12122111lim ln[]lim ln[1]lim ln (12)(12)12n a n aa n n n n na e n a n a a-⨯--→∞→∞→∞-+=+==---⑵ 交换积分次序:111422104(,)(,)________yyydy f x y dx dy f x y dx +=⎰⎰⎰⎰.【分析】写出对应的二重积分积分域D 的不等式,画出D 的草图后,便可写出先对y 后对x 的二次积分【详解】对应的积分区域12D D D =+,其中11(,)0,4D x y y y x y ⎧⎫=≤≤≤≤⎨⎬⎩⎭2111(,),422D x y y y x ⎧⎫=≤≤≤≤⎨⎬⎩⎭画出D 的草图如右图所示,则D 也可表示为 21(,)0,2D x y x x y x ⎧⎫=≤≤≤≤⎨⎬⎩⎭故211114222104(,)(,)(,)yxyyxdy f x y dx dy f x y dx dx f x y dy +=⎰⎰⎰⎰⎰⎰⑶ 设三阶矩阵122212304A -⎡⎤⎢⎥=⎢⎥⎢⎥⎣⎦,三维列向量(,1,1)Ta α=。

已知A α与α线性相关,则______a =。

【分析】由A α与α线性相关知,存在常数k 使得A k αα=,及对应坐标成比例,由此求出a【详解】由于122212123304134a a A a a α-⎡⎤⎡⎤⎡⎤⎢⎥⎢⎥⎢⎥==+⎢⎥⎢⎥⎢⎥⎢⎥⎢⎥⎢⎥+⎣⎦⎣⎦⎣⎦由A α与α线性相关可得:233411a a a a ++==,从而1a =-。

2002高考试题及答案

2002高考试题及答案

2002高考试题及答案一、语言知识运用(共两节,满分45分)第一节(共25小题,每小题1分,满分25分)下面共有25个句子,每个句子均有一个词或短语划有底横线,请从每个句子后面所给的四个选项中选择一个与划线部分意义最相近的词或短语。

答案一律涂在答题卡相应的位置上。

1. Parents are apt to spoil their only child.A. tend toB. like toC. have toD. pretend2. He took a short cut through a cornfield.A. turnB. wayC. cutD. route3. They made an agreement to meet outside the cinema.A. promiseB. suggestionC. decisionD. appointment4. He was absorbed in the book and forgot all about the time.A. interestedB. surprisedC. angryD. left5. He has difficulty breathing.A. got troubleB. had funC. took careD. found interest6. The man has been on the run since he escaped from prison.A. in dangerB. in chargeC. in troubleD. on the move7. They suggested that he (should) go and see his doctor immediately.A. offeredB. admittedC. askedD. proposed8. I hope to be able to publish a novel sometime.A. writeB. haveC. printD. bring out9. It's difficult to come to any conclusion without enough evidence.A. judgmentB. decisionC. doubtD. opinion10. She's always complaining about her husband's laziness.A. askingB. talkingC. arguingD. expressing11. They can't afford to pay their bills.A. manageB. promiseC. failD. expect12. You should understand the importance of sport in education.A. recognizeB. thinkC. knowD. realize13. The government's plans have been widely criticized.A. consideredB. examinedC. disputedD. condemned14. He finished the marathon and felt a great sense of achievement.A. successB. joyC. prideD. gain15. We should combine theory with practice.A. connectB. relateC. uniteD. link16. His suggestion was flatly turned down by the committee.A. absolutelyB. forcefullyC. directlyD. definitely17. The situation demands immediate action.A. needsB. causesC. expectsD. offers18. The police are anxious that there may be further disturbances.A. worriedB. excitedC. angryD. joyful19. He is studying to become a physician.A. healerB. doctorC. surgeonD. therapist20. He is a very talented writer.A. wiseB. giftedC. experiencedD. professional21. He found it hard to live within his means.A. means of communicationB. way of lifeC. money availableD. ability to earn22. Economic problems are always closely related to social ones.A. boundB. linkedC. limitedD. connected23. The group will benefit from the exchange of ideas.A. gainB. profitC. learnD. improve24. Robert is very different from his brother in character.A. oppositeB. identicalC. freeD. similar25. The guards' task was to prevent the prisoners from escaping.A. keepB. stopC. discourageD. block第二节(共10小题,每小题1.5分,满分15分)阅读下面的短文,短文中有15处空白,每处空白给出了四个选项,请根据短文的内容从四个选项中选择一个最佳答案,涂在答题卡相应的位置上。

2002年真题详解

2002年真题详解

2002年第一部分英语知识应用试题解析一、文章总体分析本文主要介绍了计算机的发展对通信革命及人们的生存方式产生的影响。

文章第一段从早期的通信革命入手,指出在15、16世纪和20世纪之间发生了很多事情,特别是通信革命加快了步伐。

第二段接着提到20世纪计算机的出现极大地改变了这一进程。

第三段指出随着计算机的发展,我们步入了一个信息社会。

在计算机影响下,通信革命改变了我们的工作和休闲方式,也影响了我们的思考和感知方式。

在结尾部分,文章提到,当然,关于这种通信革命在经济、政治、社会和文化各方面的影响是利大于弊还是弊大于利,还存在争议。

二、试题具体解析1. [A] between在…当中,在空间、位置或时间的中间[B] before在此之前早些时候,在…前面[C] since自从…以后,以前[D] later 后来,稍后,随后[答案] A[解析] 本题考核的知识点是:时间副词的用法辨析。

解此题关键看两个方面,一是理解文章第一句话的含义:人们曾对20世纪电视的发展以及15世纪和16世纪印刷术的传播进行了比较。

二是注意转折连词yet的用法,yet一般标志着接下来的内容与前面的内容出现了较大的不同,如:She said she would be late, yet she arrived on time.(她说她会迟到,但她却准时到达了)。

文中第二句话结构非常简单,主语和谓语都无法体现与第一句话的强烈对照,这时只能通过空格里填入的时间状语来体现了,因此这个时间副词应与第一句话中的时间状语in the 20th century和in the 15th and 16th centuries相呼应并对照。

接下来关键看这个时间副词表示的是哪个时间段,15、16世纪之前,20世纪之后还是两者之间。

其实我们从下文中的the 19th century也可以推断出正确答案是between,即“然而,在这两个时段之间却发生了很多事情”。

2002年考研数学二真题及答案解析

2002年考研数学二真题及答案解析
2002年全国硕士研究生入学统一考试 数学二试题解析
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2002年考研英语真题及解析

2002年考研英语真题及解析

2002二、试题具体解析21. 要使自己的幽默让人发笑,你应当 _ 。

[A] 利用不同类型的听众[B] 取笑杂乱无章的人[C] 对不同的人谈不同的问题[D] 对你的听众表示同情[答案] C[解析]本题考核的知识点是:段落主旨题。

本题考查的是局部信息,考生关键要理解第一段。

该段首句指出,如果你想在谈话中用幽默使人发笑,你就必须知道如何辨别共同的经历和共同的问题。

接着作者又对此进行了解释,即:你的幽默必须与听众相关,显示你是他们中的一员,或你理解他们的处境并赞成他们的观点。

作者在第三句得出结论,即“Depending on whom you are addressing, the problems will be different(针对不同的听众,谈及不同的问题)”。

由此可知,C选项恰好是对该段中心的概括,为正确答案。

A选项虽然在某种程度上谈到了“不同的听众”的重要性,但没有接着阐述听众不同应该怎样做,而且它出现了文中没有的内容:利用听众。

B选项是该段最后举例说明的内容,if you are talking to a group of managers, you may refer to the disorganized methods of their secretaries; alternatively if you are addressing secretaries, you may want to comment on their disorganized bosses。

但这只是用来论证“听众不同问题不同”这个论点的一个具体个案,缺乏普遍性,无法由此而得出取笑他们就总会使幽默起作用的结论,因此不能选。

D选项就是该段第二句谈到的in sympathy with their point of view,但是它仅仅是“对不同的人谈不同的问题”这个中心论点的部分解释,不具备完整性和概括性。

答题技巧:本题要求考生透过字里行间去把握段落主题句。

(详细解析版)2002年普通高等学校招生全国统一考试(旧课程)(数学)文及答案

(详细解析版)2002年普通高等学校招生全国统一考试(旧课程)(数学)文及答案

2002年普通高等学校招生全国统一考试(数学)文及答案本试卷分第I 卷(选择题)和第II 卷(非选择题)两部分.第I 卷1至2页.第II 卷3至9页.共150分.考试时间120分钟.第Ⅰ卷(选择题共60分)一、选择题:本大题共12小题,每小题5分,共60分.在每小题给出的四个选项中,只有一项是符合题目要求的.一、选择题:本大题共12个小题,每小题5分,共60分.在每小题给出的四个选项中,只有一项是符合题目要求的.1.直线01)1(=+++y x a 与圆0222=-+x y x 相切,则a 的值为 A .1,1- B .2,2- C .1 D .1- 【答案】D【解析】圆的标准方程为22(1)1x y -+=,显然当1a =-时直线为1y =-与圆相切.2.(同理科2)复数3)2321(i +的值是 A .i - B .i C .1- D .1 【答案】C【解析】方法一:332231111()()3())3))12222=+⨯+⨯+=-.方法二:331()(cos sin )cos3sin 3123333i i ππππ+=+=⨯+⨯=-. 【编者注】方法二《新课标》不作要求.3.(同理科3)不等式0|)|1)(1(>-+x x 的解集是 A .}10|{<≤x x B .0|{<x x 且}1-≠x C .}11|{<<-x x D .1|{<x x 且}1-≠x 【答案】D【解析】显然1x ≠±.①若0x ≥,则不等变形式为(1)(1)0x x +->,解得11x -<<,解为01x ≤<;②若0x <且1x ≠-,不等式变形为(1)(1)0x x ++>恒成立,所以不等式0|)|1)(1(>-+x x 的解集是1|{<x x 且}1-≠x .4.(同理科填空13)函数xa y =在]1,0[上的最大值与最小值这和为3,则a = A .21 B .2 C .4 D .41【答案】2【解析】不论函数是增函数还是减函数,都有013a a +=,所以2a =.5.(同理科4)在)2,0(π内,使x x cos sin >成立的x 的取值范围是 A .)45,()2,4(ππππ B .),4(ππ C .)45,4(ππ D .)23,45(),4(ππππ 【答案】C【解析】方法一:结合函数的图象易知C 正确,详解略. 方法二:不等式化为sin cos )04x x x π-=->,则04x ππ≤-≤,于是得544x ππ≤≤.6.(同理科5)设集合11{|,},{|,}2442k k M x x k Z N x x k Z ==+∈==+∈,则 A .N M = B .N M ⊂ C .N M ⊃ D .∅=N M【答案】B【解析】由于212{|,},{|,}44k k M x x k Z N x x k Z ++==∈==∈,21k +可以取所有的奇数,而2k +可以取所有的整数,所以N M ⊂.7.(同理科填空14)椭圆5522=+ky x 的一个焦点是)2,0(,那么=k A .1- B .1 C .5 D .5- 【答案】1【解析】椭圆焦点在y 轴上,标准方程为22151y x k+=,所以514k -=,即1k =. 8.(同理科7)一个圆锥和一个半球有公共底面,如果圆锥的体积恰好与半球的体积相等,那么这个圆锥轴截面顶角的余弦值是A .43 B .54 C .53 D .53- 【答案】C【解析】设圆锥的底面半径和高分别为,r h ,轴截面顶角为θ,由题设可得231233r h r ππ=,得2h r =,则1tan22θ=,所以221tan 32cos 51tan 2θθθ-==-.9.(同新理科9)已知10<<<<a y x ,则有 A .()log 0a xy < B .()0log 1a xy << C .()1log 2a xy << D .()log 2a xy > 【答案】D【解析】由已知得20xy a <<,而函数log a y x =为减函数,则()2log log 2a a xy a >=.10.(同理科9)函数2([0,))y x bx c x =++∈+∞是单调函数的充要条件是 A .0≥b B .0≤b C .0>b D .0<b 【答案】A【解析】函数的对称轴为2b x =-,显然函数2([0,))y x bx c x =++∈+∞是单调函数的充要条件是02b-≤,即0≥b .11.设)4,0(πθ∈,则二次曲线22cot tan 1x y θθ-=的离心率取值范围A .1(0,)2B .)22,21( C .)2,22( D .),2(+∞ 【答案】D【解析】由题设得二次曲线方程为22111cot tan x y θθ-=,即2211,cot tan a b θθ==,所以离心率c a===)4,0(πθ∈,所以22cos 1sin θθ>,则)c a ∈+∞.12.(同理11)从正方体的6个面中选取3个面,其中有2个面不相邻的选法共有 A .8种 B .12种 C .16种 D .20种 【答案】B【解析】使用间接法,首先分析从6个面中选取3个面,共36C 种不同的取法,而其中有2个面相邻,即8个角上3个相邻平面,选法有8种,则选法共有36812C -=种;故选B .第II 卷(非选择题共90分)二、填空题:本大题共4小题,每小题4分,共16分.把答案填在题中横线.13.据新华社2002年3月12日电,1985年到2000年间.我国农村人均居住面积如图所示,其中,从 年到 年的五年间增长最快.【答案】1995;2000【解析】连续3个5年的增长量分别为3.1,3.2,3.7, 显然从1995年到2000年的五年间增长最快.14.(同新理科13)函数xxy +=12(),1(+∞-∈x )图象与其反函数图象的交点为 . 【答案】(0,0),(1,1)【解析】原函数与他的反函数的图象关于y x =对称,原函数与他的反函数如果有交点,那么交点一定在y x =上,联立方程21x y x=+与y x =解得交点坐标为(0,0),(1,1),注意到()1,x ∈-+∞,均符合条件.15.(同理科15)72)2)(1(-+x x 展开式中3x 的系数是 . 【答案】1008【解析】3x 的系数是164477(2)(2)1008C C -+-=.16.对于顶点在原点的抛物线,给出下列条件: ①焦点在y 轴上; ②焦点在x 轴上;③抛物线上横坐标为1的点到焦点的距离等于6;④抛物线的通径的长为5;⑤由原点向过焦点的某条直线作垂线,垂足坐标为)1,2(.能使这抛物线方程为x y 102=的条件是第 .(要求填写合适条件的序号) 【答案】②⑤【解析】抛物线方程为x y 102=的焦点在x 轴上;抛物线的焦点坐标为5(,0)2,则由抛物线的定义可知横坐标为1的点到焦点的距离等于57122+=;抛物线的通径的长为10;⑤中两直线斜率满足关系11015222-⨯=--.故②⑤符合题设.三、解答题:本大题共6小题,共74分,解答应写出文字说明、证明过程或演算步骤. 17.(本小题12分)如图,某地一天从6时至14时的温度变化曲线近似满足函数b x A y ++=)sin(ϕω (Ⅰ)求这段时间的最大温差;(Ⅱ)写出这段时间的函数解析式. 【解】(Ⅰ)由图示,这段时间的最大温差是301020C -=︒.(Ⅱ)图中从6时到14时的图象是函数b x A y ++=)sin(ϕω的半个周期的图象.∴614221-=⋅ωπ,解得8πω=. 由图示,11(3010)10,(1030)2022A b =-==+=.这时,20)8sin(10++=ϕπx y .将10,6==y x 代入上式,可取43πϕ=. 综上,所求的解析式为310sin()20([6,14])84y x x ππ=++∈.18.(本小题12分)甲、乙物体分别从相距70米的两处同时相向运动.甲第1分钟走2米,以后每分钟比前1分钟多走1米,乙每分钟走5米.(Ⅰ)甲、乙开始运动后几分钟相遇?(Ⅱ)如果甲、乙到达对方起点后立即折返,甲继续每分钟比前1分钟多走1米,乙继续每分钟走5米,那么开始运动几分钟后第二相遇?【解】(Ⅰ)设n 分钟后第1次相遇,依题意,有7052)1(2=+-+n n n n , 整理得0140132=-+n n ,解得7,20n n ==-(舍). 第一次相遇是在开始后7分钟.(Ⅱ)设n 分钟后第2次相遇,依题意,有70352)1(2⨯=+-+n n n n , 整理得0420132=-+n n ,解得15,28n n ==-(舍). 第二次相遇是在开始后15分钟. 19.(同广东19)(本小题12分)四棱锥P ABCD -的底面是边长为a 的正方形,PB ⊥面ABCD . (Ⅰ)若面PAD 与面ABCD 所成的二面角为 60,求这个四棱锥的体积; (Ⅱ)证明无论四棱锥的高怎样变化,面PAD 与面PCD 所成的二面角恒大于 90.【解】本小题考查线面关系和二面角的概念,以及空间想象能力和逻辑推理能力,满分12分.(I )因为⊥PB 面ABCD .所以BA 是PA 在面ABCD 上的射影, 又AB DA ⊥,所以DA PA ⊥.∴PAB ∠是面PAD 与面ABCD 所成的二面角的平面角,∴ 60=∠PAB . 而PB 是四棱锥ABCD P -的高,tan 603PB AB a ==.3233331a a a V =⨯⨯=∴锥. (II )证:不论棱锥的高怎样变化,棱锥侧面PAD 与PCD 恒为全等三角形.作DP AE ⊥,垂足为E ,连结EC ,则CDE ADE ∆≅∆,90,=∠=∴CED CE AE .故CEA ∠是面PAD 与面PCD 所成的二面角的平面角. 设AC 与DB 相交于点O ,连结EO ,则AC EO ⊥. a AD AE OA a =<<=∴22. 在AEC ∆中,EC AE OA EC AE AEC ⨯⨯-+=∠2)2(cos 2220)2)(2(2<-+=AEOA AE OA AE . 所以,面PAD 与面PCD 所成的二面角恒大于90度.20.(本小题12分)设函数2()|2|1,f x x x x R =+-+∈. (Ⅰ)讨论)(x f 的奇偶性; (Ⅱ)求)(x f 的最小值.【解】(Ⅰ)3)2(=f ,7)2(=-f ,由于)2()2(f f ≠-,)2()2(f f -≠-, 故)(x f 既不是奇函数,也不是偶函数.(Ⅱ)223, 2,()1, 2.x x x f x x x x ⎧+-≥⎪=⎨-+<⎪⎩由于)(x f 在),2[+∞上的最小值为3)2(=f ,在)2,(-∞内的最小值为43)21(=f . 故函数)(x f 在),(∞-∞内的最小值为43.21.(本小题14分)已知点P 到两定点(1,0),(1,0)M N -距离的比为2,点N 到直线PM 的距离为1,求直线PN 的方程.【解】设P 的坐标为),(y x ,由题意有2||||=PN PM ,即2222)1(2)1(y x y x +-⋅=++,整理得01622=+-+x y x . ①因为点N 到PM 的距离为1,2||=MN .所以30PMN ∠=︒,直线PM 的斜率为33±. 直线PM 的方程为)1(33+±=x y . ② 将②代入①,整理得0142=+-x x .解得32+=x ,32-=x .则点P 坐标为)31,32(++或)31,32(+--,)31,32(--+或(23,13)--.直线PN 的方程为1-=x y 或1+-=x y .22.(同广东21)(本小题满分12分,附加题满分4分)(Ⅰ)给出两块面积相同的正三角形纸片(如图1,图2),要求用其中一块剪拼成一个正三棱锥模型,另一块剪拼成一个正三棱柱模型,使它们的全面积都与原三角形的面积相等,请设计一种剪拼方法,分别用虚线标示在图1、图2中,并作简要说明.(Ⅱ)试比较你剪拼的正三棱锥与正三棱柱的体积的大小. (Ⅲ)(本小题为附加题,如果解答正确,加4分,但全卷总分不超过150分.) 如果给出的是一块任意三角形的纸片(如图3),要求剪拼成一个直三棱柱模型,使它的全面积与给出的三角形的面积相等,请设计一种剪拼方法,用虚线标示在图3中,并作简要说明.【解】本小题主要考查空间想象能力、动手操作能力、探究能力和灵活运用所学知识解决现实问题的能力,满分12分,附加题4分.(I )如图1,沿正三角形三边中点连线折起,可拼得一个正三棱锥.如图2,正三角形三个角上剪出三个相同的四边形,其较长的一组邻边边长为三角形边长的41,有一组对角为直角,余下部分按虚线折起,可成为一个缺上底的正三棱柱,而剪出的三个相同的四边形恰好拼成这个正三棱柱的上底.(II )依上面剪拼的方法,有锥柱V V >.推理如下:设给出正三角形纸片的边长为2,那么,正三棱锥与正三棱柱的底面都是边长为1的正三角形,其面积为43,现在计算它们的高: 2236131(),tan 3032326h h =-⨯===锥柱. 13633()()34964V V h h ∴-=-⨯=-⨯锥柱锥柱024322<-=. 所以锥柱V V >. (III )(附加题,满分4分)如图3,分别连结三角形的内心与各顶点,得到三条线段,再以这三条线段的中点为顶点作三角形,以新作的三角形为直三棱柱的底面,过新三角形的三个顶点向原三角形三边作垂线,沿六条垂线剪下三个四边形,可以拼接成直三棱柱的上底、余下部分按虚线折起,成为一个缺上底的直三棱柱,即可得到直三棱柱模型.注:考生如有其他的剪拼方法,可比照本标准评分.。

2002考研英语阅读真题及详细解析

2002考研英语阅读真题及详细解析

Part OneIf you intend using humor in your talk to make people smile, you must know how to identify shared experiences and problems. Y our humor must be relevant to the audience and should help to show them that you are one of them or that you understand their situation and are in sympathy with their point of view. Depending on whom you are addressing, the problems will be different. If you are talking to a group of managers, you may refer to the disorganized methods of their secretaries; alternatively if you are addressing secretaries, you may want to comment on their disorganized bosses.Here is an example, which I heard at a nurses' convention, of a story which works well because the audience all shared the same view of doctors. A man arrives in heaven and is being shown around by St. Peter. He sees wonderful accommodations, beautiful gardens, sunny weather, and so on. Everyone is very peaceful, polite and friendly until, waiting in a line for lunch, the new arrival is suddenly pushed aside by a man in a white coat, who rushes to the head of the line, grabs his food and stomps over to a table by himself. "Who is that?" the new arrival asked St. Peter. "Oh, that's God." came the reply, "but sometimes he thinks he's a doctor."If you are part of the group which you are addressing, you will be in a position to know the experiences and problems which are common to all of you and it'll be appropriate for you to make a passing remark about the inedible canteen food or the chairman's notorious bad taste in ties. With other audiences you mustn't attempt to cut in with humor as they will resent an outsider making disparaging remarks about their canteen or their chairman. Y ou will be on safer ground if you stick to scapegoats like the Post Office or the telephone system.If you feel awkward being humorous, you must practice so that it becomes more natural. Include a few casual and apparently off-the-cuff remarks which you can deliver in a relaxed and unforced manner. Often it's the delivery which causes the audience to smile, so speak slowly and remember that a raised eyebrow or an unbelieving look may help to show that you are making a light-hearted remark.Look for the humor. It often comes from the unexpected. A twist on a familiar quote "If at first you don't succeed, give up" or a play on words or on a situation. Search for exaggeration and understatements. Look at your talk and pick out a few words or sentences which you can turn about and inject with humor.1. To make your humor work, you should ________.[A] take advantage of different kinds of audience[B] make fun of the disorganized people.[C] address different problems to different people.[D] show sympathy for your listeners.2. The joke about doctors implies that, in the eyes of nurses, they are ________.[A] impolite to new arrivals.[B] very conscious of their godlike role.[C] entitled to some privileges.[D] very busy even during lunch hours.3. It can be inferred from the text that public services ________.[A] have benefited many people.[B] are the focus of public attention.[C] are an inappropriate subject for humor.[D] have often been the laughing stock.4. To achieve the desired result, humorous stories should be delivered ________.[A] in well-worded language.[B] as awkwardly as possible.[C] in exaggerated statement.[D] as casually as possible.5. The best title for the text may be ________.[A] Use Humor Effectively.[B] V arious Kinds of Humor.[C] Add Humor to Speech.[D] Different Humor Strategies.Unit 9(2002)Part 1重点词汇:1.identify(辨别;视为同一)即ident+ify,ident词根“同一”,-ify动词后缀“使……”;identification(识别;身份证明)←identify去y加-ication名词后缀;identical(同一的)←ident+ical形容词后缀。

2002年数学真题(附评卷说明与参考答案)

2002年数学真题(附评卷说明与参考答案)

2002年数学真题(附评卷说明与参考答案)2003年考研数学(一)真题评注一、填空题(本题共6小题,每小题4分,满分24分. 把答案填在题中横线上)(1))1ln(12)(cos lim x x x +→ =e 1.【分析】 ∞1型未定式,化为指数函数或利用公式)()(lim x g x f )1(∞=)()1)(lim(x g x f e-进行计算求极限均可.【详解1】)1ln(12)(cos lim x x x +→=xx x ecos ln )1ln(1lim20+→,而212cos sin lim cos ln lim )1ln(cos ln lim 02020-=-==+→→→x x xx x x x x x x , 故 原式=.121e e=-【详解2】 因为2121lim )1ln(1)1(cos lim 2202-=-=+⋅-→→x xx x x x , 所以 原式=.121e e=-【评注】 本题属常规题型,完全类似例题见《数学复习指南》P.24-25 【例1.30-31】.(2) 曲面22y x z +=与平面042=-+z y x 平行的切平面的方程是542=-+z y x .【分析】 待求平面的法矢量为}1,4,2{-=n ,因此只需确定切点坐标即可求出平面方程, 而切点坐标可根据曲面22y x z +=切平面的法矢量与}1,4,2{-=n 平行确定.【详解】 令 22),,(y x z z y x F --=,则x F x 2-=',y F y 2-=', 1='z F .设切点坐标为),,(000z y x ,则切平面的法矢量为 }1,2,2{00y x --,其与已知平面042=-+z y x 平行,因此有11422200-=-=-y x , 可解得 2,100==y x ,相应地有.520200=+=y x z 故所求的切平面方程为0)5()2(4)1(2=---+-z y x ,即 542=-+z y x .【评注】 本题属基本题型,完全类似例题见《数学复习指南》P.279 【例10.28】和 《数学题型集粹和练习题集》P.112 【例8.13】.(3) 设)(cos 02ππ≤≤-=∑∞=x nx a x n n ,则2a = 1 .【分析】 将)()(2ππ≤≤-=x x x f 展开为余弦级数)(cos 02ππ≤≤-=∑∞=x nx a x n n ,其系数计算公式为⎰=ππcos )(2nxdxx f a n .【详解】 根据余弦级数的定义,有xd x xdx x a 2sin 12cos 22022⎰⎰=⋅=ππππ=⎰⋅-πππ02]22sin 2sin [1xdx x xx=⎰⎰-=πππππ]2cos 2cos [12cos 1xdx xx x xd=1.【评注】 本题属基本题型,主要考查傅里叶级数的展开公式,本质上转化为定积分的计算. 完全类似例题见《文登数学全真模拟试卷》数学一P.62第一大题第(6)小题和《数学复习指南》P.240 【例8.37】.(4)从2R 的基⎪⎪⎭⎫ ⎝⎛-=⎪⎪⎭⎫ ⎝⎛=11,0121αα到基⎪⎪⎭⎫ ⎝⎛=⎪⎪⎭⎫ ⎝⎛=21,1121ββ的过渡矩阵为⎪⎪⎭⎫ ⎝⎛--2132 .【分析】 n 维向量空间中,从基n ααα,,,21 到基n βββ,,,21 的过渡矩阵P 满足 [nβββ,,,21 ]=[nααα,,,21 ]P ,因此过渡矩阵P 为:P=[121],,,-n ααα [],,,21n βββ .【详解】根据定义,从2R 的基⎪⎪⎭⎫ ⎝⎛-=⎪⎪⎭⎫ ⎝⎛=11,0121αα到基⎪⎪⎭⎫⎝⎛=⎪⎪⎭⎫ ⎝⎛=21,1121ββ的过渡矩阵为P=[121],-αα[⎥⎦⎤⎢⎣⎡⎥⎦⎤⎢⎣⎡-=-21111011],121ββ. =.213221111011⎥⎦⎤⎢⎣⎡--=⎥⎦⎤⎢⎣⎡⎥⎦⎤⎢⎣⎡- 【评注】 本题属基本题型,完全类似例题见《数学复习指南》P.429 【例3.35】.(5)设二维随机变量(X,Y)的概率密度为,y x x y x f 其他,10,0,6),(≤≤≤⎩⎨⎧= 则=≤+}1{Y X P 41.【分析】 已知二维随机变量(X,Y)的概率密度f(x,y),求满足一定条件的概率}),({0z Y X g P ≤,一般可转化为二重积分}),({0z Y X g P ≤=⎰⎰≤0),(),(z y x g dxdyy x f 进行计算.【详解】 由题设,有 =≤+}1{Y X P ⎰⎰⎰⎰≤+-=121016),(y x xxxdydx dxdy y x f=.41)126(2102=-⎰dx x x【评注】 本题属基本题型,但在计算二重积分时,应注意找出概率密度不为零与满足不等式1≤+y x 的公共部分D ,再在其上积分即可. 完全类似例题见《文登数学全真模拟试卷》数学一P.14第一大题第(5)小题.(6)已知一批零件的长度X (单位:cm)服从正态分布)1,(μN ,从中随机地抽取16个零件,得到长度的平均值为40 (cm),则μ的置信度为0.95的置信区间是)49.40,51.39(.(注:标准正态分布函数值.)95.0)645.1(,975.0)96.1(=Φ=Φ 【分析】 已知方差12=σ,对正态总体的数学期望μ进行估计,可根据)1,0(~1N n X μ-,由αμα-=<-1}1{2u n X P 确定临界值2αu ,进而确定相应的置信区间.【详解】 由题设,95.01=-α,可见.05.0=α于是查标准正态分布表知.96.12=αu 本题n=16, 40=x , 因此,根据95.0}96.11{=<-n X P μ,有95.0}96.116140{=<-μP ,即 95.0}49.40,51.39{=P ,故μ的置信度为0.95的置信区间是)49.40,51.39(.【评注】 本题属基本题型,完全类似例题见《数学复习指南》P.608 【例6.16】.二、选择题(本题共6小题,每小题4分,满分24分. 每小题给出的四个选项中,只有一项符合题目要求,把所选项前的字母填在题后的括号内)(1)设函数f(x)在),(+∞-∞内连续,其导函数的图形如图所示,则f(x)有 (A) 一个极小值点和两个极大值点. (B) 两个极小值点和一个极大值点. (C) 两个极小值点和两个极大值点.(D) [ C ]【分析】 答案与极值点个数有关,而可能的极值点应是导数为零或导数不存在的点,共4个,是极大值点还是极小值可进一步由取极值的第一或第二充分条件判定.【详解】 根据导函数的图形可知,一阶导数为零的点有3个,而 x=0 则是导数不存在的点. 三个一阶导数为零的点左右两侧导数符号不一致,必为极值点,且两个极小值点,一个极大值点;在x=0左侧一阶导数为正,右侧一阶导数为负,可见x=0为极大值点,故f(x)共有两个极小值点和两个极大值点,应选(C).【评注】 本题属新题型,类似考题2001年数学一、二中曾出现过,当时考查的是已知f(x)的图象去推导)(x f '的图象,本题是其逆问题. 完全类似例题在文登学校经济类串讲班上介绍过.(2)设}{},{},{n n n c b a 均为非负数列,且0lim =∞→n n a ,1lim =∞→n n b ,∞=∞→n n c lim ,则必有(A) n n b a <对任意n 成立. (B) n n c b <对任意n 成立.(C) 极限n n n c a ∞→lim 不存在. (D) 极限nn n c b ∞→lim 不存在. [ D ] 【分析】 本题考查极限概念,极限值与数列前面有限项的大小无关,可立即排除(A),(B); 而极限nn n c a ∞→lim 是∞⋅0型未定式,可能存在也可能不存在,举反例说明即可;极限nn n c b ∞→lim 属∞⋅1型,必为无穷大量,即不存在.【详解】 用举反例法,取n a n 2=,1=n b ,),2,1(21==n n c n ,则可立即排除(A),(B),(C),因此正确选项为(D).【评注】 对于不便直接证明的问题,经常可考虑用反例,通过排除法找到正确选项. 完全类似方法见《数学最后冲刺》P.179.(3)已知函数f(x,y)在点(0,0)的某个邻域内连续,且1)(),(lim2220,0=+-→→y x xyy x f y x ,则(A) 点(0,0)不是f(x,y)的极值点. (B) 点(0,0)是f(x,y)的极大值点. (C) 点(0,0)是f(x,y)的极小值点.(D) 根据所给条件无法判断点(0,0)是否为f(x,y)的极值点. [ A ] 【分析】 由题设,容易推知f(0,0)=0,因此点(0,0)是否为f(x,y)的极值,关键看在点(0,0)的充分小的邻域内f(x,y)是恒大于零、恒小于零还是变号.【详解】 由1)(),(lim2220,0=+-→→y x xyy x f y x 知,分子的极限必为零,从而有f(0,0)=0, 且222)(),(y x xy y x f +≈- y x ,(充分小时),于是.)()0,0(),(222y x xy f y x f ++≈-可见当y=x 且x 充分小时,04)0,0(),(42>+≈-x x f y x f ;而当y= -x 且x 充分小时,04)0,0(),(42<+-≈-x x f y x f . 故点(0,0)不是f(x,y)的极值点,应选(A).【评注】 本题综合考查了多元函数的极限、连续和多元函数的极值概念,题型比较新,有一定难度. 将极限表示式转化为极限值加无穷小量,是有关极限分析过程中常用的思想,类似分析思想的例题见《数学复习指南》P.43 【例1.71】.(4)设向量组I :r ααα,,,21 可由向量组II :s βββ,,,21 线性表示,则 (A) 当s r <时,向量组II 必线性相关. (B) 当s r >时,向量组II 必线性相关. (C) 当s r <时,向量组I 必线性相关. (D) 当s r >时,向量组I 必线性相关. [ D ]【分析】 本题为一般教材上均有的比较两组向量个数的定理:若向量组I :rααα,,,21 可由向量组II :s βββ,,,21 线性表示,则当s r >时,向量组I 必线性相关. 或其逆否命题:若向量组I :r ααα,,,21 可由向量组II :s βββ,,,21 线性表示,且向量组I 线性无关,则必有s r ≤. 可见正确选项为(D). 本题也可通过举反例用排除法找到答案.【详解】 用排除法:如⎪⎪⎭⎫⎝⎛=⎪⎪⎭⎫ ⎝⎛=⎪⎪⎭⎫ ⎝⎛=10,01,00211ββα,则21100ββα⋅+⋅=,但21,ββ线性无关,排除(A);⎪⎪⎭⎫⎝⎛=⎪⎪⎭⎫ ⎝⎛=⎪⎪⎭⎫ ⎝⎛=01,01,00121βαα,则21,αα可由1β线性表示,但1β线性无关,排除(B);⎪⎪⎭⎫ ⎝⎛=⎪⎪⎭⎫ ⎝⎛=⎪⎪⎭⎫ ⎝⎛=10,01,01211ββα,1α可由21,ββ线性表示,但1α线性无关,排除(C). 故正确选项为(D).【评注】 本题将一已知定理改造成选择题,如果考生熟知此定理应该可直接找到答案,若记不清楚,也可通过构造适当的反例找到正确选项。

2002-数二真题、标准答案及解析

2002-数二真题、标准答案及解析

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2002年国考真题+答案解析

2002年国考真题+答案解析

语”:包括网络、互联网、互联网经济、在线、新经济、IT、信息时代等。

以“酷”、“作秀”、“前卫”、“新人类”等为代表的时尚名词,则以两个百分点之差屈居第二位。

(6)吴先生所住的小区安装有局域宽带网,为方便家人上网,他特意购买了一台电脑。

但近半个月来,他发现自己的计算机在使用完毕后有异常响动。

10月9日晚,他下网后坐在桌旁整理资料时,意外发现电脑的硬盘响个不停,—直闪烁的硬盘灯引起了他的警觉,他打开电脑上安装的一个专门监视网络系统的软件,竟然发现这台电脑在收发信息。

随后,他打开了“网上邻居”文件夹,屏幕上出现了30个“邻居”的电脑标志,他逐一点击,有几个“邻居”的信息可以一览无余。

想到自己存在电脑里的个人信息能如此轻易地被“邻居”看到,吴先生十分苦恼:“买电脑就想给生活提供方便,没想到却引来意外的麻烦”。

(7)我国《计算机信息网络国际联网安全保护管理办法》第7条明确规定:“任何单位和个人不得违反法律规定,利用国际互联网侵犯用户的通信自由和通信秘密。

”局域网“黑客”在未经同意的情况下私自翻阅、篡改他人信息,也在一定程度上侵犯了他人的隐私权。

隐私权具体到网络上主要包括个人隐私不被窥视;个人信箱、网上账户等不被侵入;使用信箱交流信息及从事交易活动的安全保密性不被干扰等。

(8)中关村科技园区海淀园的网上办公系统几乎完成了园区内所有企业80%以上的业务流程。

它完成了5大类64个小项的政府服务,包括企业入园申报和审批、高新技术企业认证、年审、企业统计、财政月报、季报等项目。

目前,中关村企业在办理这些业务时,几乎全在网上进行。

中关村已经有6139家企业加入了网上办公系统,占园区企业总数的99%以上。

网上办公系统共接受园区企业及社会各界工作查询访问40.6万人次,日均访问人数4000人次。

2001年1月1日以来,网上办公系统受理各种网上审批和初始登记业务分别为3483项和5058项。

数字表明,中关村园区的电子政务真正“跑”了起来。

2002年国家公务员考试真题及答案解析

2002年国家公务员考试真题及答案解析

2002年中央、国家机关公务员录用考试《行政职业能力测验》试题(卷)(A 类)第一部分 数量关系(共15题,参考时限15分钟)本部分包括两种类型的试题,均为单项选择题。

一、数字推理共5题。

给你一个数列,但其中缺少一或二项,要求你仔细观察数列的排列规律,然后从四个选项中选出你认为最合理的一项来填补空缺项。

请开始答题:1. 2,6,12,20,30,( )A.38B.42C.48D.562. 20,22,25,30,37,( )A.39B.45C.48D.513. 2,5,11,20,32,( )A.43B.45C.47D.494. 1,3,4,7,11,( )A.14B.16C.18D.205. 34,36,35,35,( ),34,37,( )A.36,33B.33,36C.37,34D.34,37二、数学运算共10题。

你可以在草稿纸上运算,遇到难题,你可以跳过不做,待你有时间再返回来做。

[例题]87.78元、59.50元、121.61元、12.43元以及66.50元的总和是:A.343.73B.343.83C.344.73D.344.82[解答] 正确答案为D 。

实际上你只要把最后一位小数加一下,就会发现和的最后一位数是2,只有D 符合要求。

就是说你应当动脑筋想出解题的捷径。

请开始答题:6.1998年,甲的年龄是乙的年龄的4倍。

2002年,甲的年龄是乙的年龄的3倍。

问甲、乙二人2000年的年龄分别是多少岁?( )A.34岁,12岁B.32岁,8岁C.36岁,12岁D.34岁,10岁7.一项工作,甲单独做10天完成,乙单独做15天完成。

问:两人合作3天完成工作的几分之几?( ) A. 12 B. 13 C. 15 D. 16 8. 15.025.053÷⨯的值是:( ) A.1 B.1.5 C.1.6 D.2.09.某学校学生排成一个方阵,最外层的人数是60人,问这个方阵共有学生多少人?( )A.256人B.250人C.225人D.196人10.一根长18米的钢筋被锯成两段。

2002年国家公务员录用考试《行测》真题(A卷)参考答案及解析

2002年国家公务员录用考试《行测》真题(A卷)参考答案及解析

1、【答案】B【解析】A项扫描仪是在影像处理过程中将照片图案等扫描输入到电脑的一项输入设备。

B项磁盘驱动器既可读盘,又能将数据写入,因此既可算做输入设备,又可看成输出设备。

C项键盘是电脑主要的输入设备,可以用来接收使用者的指令和外界的资料等。

D项显示器是电脑最主要的输出设备,可以将电脑处理后的结果如文字或影像显示出来。

A、C、D三项均功能单一,只有B项既可以作输入设备又可以作输出设备。

故正确答案为B2、【答案】C【解析】实际上,烟雾中的颗粒物是肉眼不易察觉的,A项错误;香烟冒出的蓝色烟雾实际上是香烟的颗粒对蓝色光有较强的散射效应。

按照光的散射定律,白光中的短波成分蓝紫色遭到散射比长波成分红黄色强烈,散射光因短波富集而呈蓝色。

与光的吸收和透射没有关系,BD项错误。

故答案为C【拓展】每当大雨初霁、澄清了尘埃的时候,天空总是呈美丽的蔚蓝色,其道理也是蓝紫光的散射。

旭日和夕阳呈红色,则是由于白光中蓝紫色成分被更多散射掉了,在直射的日光中剩余较多的是红黄色的长波成分3、【答案】B【解析】电磁波谱是一系列不同频率辐射的总称。

波段频率从低到高排列的顺序依次是:无线电波、微波、红外光、可见光、紫外光、X-射线、γ-射线。

所以ACD错误。

因此,正确答案为B【拓展】电磁波谱中,频率越高,波长越小。

所以,波长由高到低的排序依次是:无线电波、微波、红外光、可见光、紫外光、X-射线、γ-射线4、【答案】B【解析】DNA每条单链由脱氧核糖、核苷酸和磷酸构成,而核苷酸由碱基构成。

所以ACD错误,故正确答案为B 【拓展】DNA是一种长链聚合物,组成单位为四种脱氧核苷酸,即腺嘌呤脱氧核苷酸(dAMP脱氧腺苷)、胸腺嘧啶脱氧核苷酸(dTMP脱氧胸苷)、胞嘧啶脱氧核苷酸(dCMP脱氧胞苷)、鸟嘌呤脱氧核苷酸(dGMP脱氧鸟苷)5、【答案】A【解析】由于自然界的竞争十分激烈,所以很多动物都会形成保护色,这样能够与自然环境混为一体,有助于躲避其他动物天敌的捕食。

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2002年全国攻读硕士学位研究生入学考试英语试题Section I Use of EnglishDirections:Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C OR D on ANSWER SHEET 1. (10 points)Comparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 16th centuries. Yet much had happened 1 . As was discussed before, it was not 2 the 19th century that the newspaper became the dominant pre-electronic_ 3 _ ,following in the wake of the pamphlet and the book and in the 4 of the periodical. It was during the same time that the communications revolution 5 up, beginning with transport, the railway, and leading 6 through the telegraph, the telephone, radio, and motion pictures 7 the 20th century world of the motor car and the air plane. Not everyone sees that Process in 8 . It is important to do so.It is generally recognized, 9 , that the introduction of the computer in the early 20th century, 10 by the invention of the integrated circuit during the 1960s, radically changed the process, 11 its impact on the media was not immediately 12 . As time went by, computers became smaller and more powerful, and they became “personal” too, as well as 13 , with display becoming sharper and storage 14 increasing. They were thought of, like people, 15 generations, with the distance between generations much 16 .It was within the computer age that the term “information society” began to be widely used to describe the 17 within which we now live. The communications revolution has 18 both work and leisure and how we think and feel both about place and time, but there have been 19 view about its economic, political, social and cultural implication s. “Benefits” have been weighed 20 “harmful” outcomes. And generalizations have proved difficult.1. [A]between [B]before [C]since [D]later2. [A]after [B]by [C]during [D]until3. [A]means [B]method [C]medium [D]measure4. [A]process [B]company [C]light [D]form5. [A]gathered [B]speeded [C]worked [D]picked6. [A]on [B]out [C]over [D]off7. [A]of [B]for [C]beyond [D]into8. [A]concept [B]dimension [C]effect [D]perspective9. [A]indeed [B]hence [C]however [D]therefore10. [A]brought [B]followed [C]stimulated [D]characterized11. [A]unless [B]since [C]lest [D]although12. [A]apparent [B]desirable [C]negative [D]plausible13. [A]institutional [B]universal [C]fundamental [D]instrumental14. [A]ability [B]capability [C]capacity [D]faculty15. [A]by means of [B]in terms of [C]with regard to[D]in line with16. [A]deeper [B]fewer [C]nearer [D]smaller17. [A]context [B]range [C]scope [D]territory18. [A]regarded [B]impressed [C]influenced [D]effected19. [A]competitive [B]controversial [C]distracting [D]irrational20. [A]above [B]upon [C]against [D]withSection II Reading ComprehensionPart ADirections:Read the following four texts. Answer the questions below each text by choosing [A], [B], [C] or [D]. Mark your answers on ANSWER SHEET 1. (40 points)Text 1If you intend using humor in your talk to make people smile, you must know how to identify shared experiences and problems. Your humor must be relevant to the audience and should help to show them that you are one of them or that you understand their situation and are in sympathy with their point of view. Depending on whom you are addressing, the problems will be different. If you are talking to a group of managers, you may refer to the disorganized methods of their secretaries; alternatively if you are addressing secretaries, you may want to comment on their disorganized bosses.Here is an example, which I heard at a nurses’ convention, of a story which works well because the audience all shared the same view of doctors. A man arrives in heaven and is being shown around by St. Peter. He sees wonderful accommodations, beautiful gardens, sunny weather, and so on. Everyone is very peaceful, polite and friendly until, waiting in a line for lunch, the new arrival is suddenly pushed aside by a man in a white coat, who rushes to the head of the line, grabs his food and stomps over to a table by himself. “Who is that?”the new arrival asked St. Peter. “Oh, that’s God,” came the reply, “but sometimes he thinks he’s a doctor.”If you are part of the group which you are addressing, you will be in a position to know the experiences and problems which are common to all of you and it’ll be appropriate for you to make a passing remark about the inedible canteen food or the chairman’s notorious bad taste in ties. With other audiences you mustn’t attempt to cut in with humor as they will resent an outsider making disparaging remarks about their canteen or their chairman. You will be on safer ground if you stick to scapegoats like the Post Office or the telephone system.If you feel awkward being humorous, you must practice so that it becomes more natural. Include a few casual and apparently off-the-cuff remarks which you can deliver in a relaxed and unforced manner. Often it’s the delivery which causes theaudience to smile, so speak slowly and remember that a raised eyebrow or an unbelieving look may help to show that you are making a light-hearted remark.Look for the humor. It often comes from the unexpected. A twist on a familiar quote “If at first you don’t succeed, give up”or a play on words or on a situation. Search for exaggeration and understatement. Look at your talk and pick out a few words or sentences which you can turn about and inject with humor.21. To make your humor work, you should .[A] take advantage of different kinds of audience[B] make fun of the disorganized people[C] address different problems to different people[D] show sympathy for your listeners22. The joke about doctors implies that, in the eyes of nurses, they are .[A] impolite to new arrivals[B] very conscious of their godlike role[C] entitled to some privileges[D] very busy even during lunch hours23. It can be inferred from the text that publics .[A] have benefited many people[B] are the focus of public attention[C] are an inappropriate subject for humor[D] have often been the laughing stock24. To achieve the desired result, humorous stories should be delivered .[A] in well-worded language[B] as awkwardly as possible[C] in exaggerated statements[D] as casually as possible25. The best title for the text may be .[A] Use Humor Effectively[B] Various Kinds of Humor[C] Add Humor to Speech[D] Different Humor StrategiesText 2Since the dawn of human ingenuity, people have devised ever more cunning tools to cope with work that is dangerous, boring, burdensome, or just plain nasty. That compulsion has resulted in robotics—the science of conferring various human capabilities on machines. And if scientists have yet to create the mechanical version of science fiction, they have begun to come close.As a result, the modern world is increasingly populated by intelligent gizmos whose presence we barely notice but whose universal existence has removed much human labor. Our factories hum to the rhythm of robot assembly arms. Our banking is done at automated teller terminals that thank us with mechanical politeness for thetransaction. Our subway trains are controlled by tireless robot-drivers. And thanks to the continual miniaturization of electronics and micro-mechanics, there are already robot systems that can perform some kinds of brain and bone surgery with submillimeter accuracy—far greater precision than highly skilled physicians can achieve with their hands alone.But if robots are to reach the next stage of laborsaving utility, they will have to operate with less human supervision and be able to make at least a few decisions for themselves—goals that pose a real challenge. “While we know how to tell a robot to handle a specific error," says Dave Lavery, manager of a robotics program at NASA, “we can't yet give a robot enough ‘common sense’ to reliably interact with a dynamic world.”Indeed the quest for true artificial intelligence has produced very mixed results. Despite a spell of initial optimism in the 1960s and 1970s when it appeared that transistor circuits and microprocessors might be able to copy the action of the human brain by the year 2010, researchers lately have begun to extend that forecast by decades if not centuries.What they found, in attempting to model thought, is that the human brain's roughly one hundred billion nerve cells are much more talented—and human perception far more complicated—than previously imagined. They have built robots that can recognize the error of a machine panel by a fraction of a millimeter in a controlled factory environment. But the human mind can glimpse a rapidly changing scene and immediately disregard the 98 percent that is irrelevant, instantaneously focusing on the monkey at the side of a winding forest road or the single suspicious face in a big crowd. The most advanced computer systems on Earth can't approach that kind of ability, and neuroscientists still don’t know quite how we do it.26. Human ingenuity was initially demonstrated in .[A] the use of machines to produce science fiction.[B] the wide use of machines in manufacturing industry.[C] the invention of tools for difficult and dangerous work.[D] the elite’s cunning tackling of dangerous and boring work.27. The word “gizmos” (line 1, paragraph 2) most probably means .[A] programs[B] experts[C] devices [D] creatures28. According to the text, what is beyond man's ability now is to design a robotthat can .[A] fulfill delicate tasks like performing brain surgery.[B] interact with human beings verbally.[C] have a little common sense.[D] respond independently to a changing world.29. Besides reducing human labor, robots can also .[A] make a few decisions for themselves.[B] deal with some errors with human intervention.[C] improve factory environments.[D] cultivate human creativity.30. The author uses the example of a monkey to argue that robots are .[A] expected to copy human brain in internal structure.[B] able to perceive abnormalities immediately.[C] far less able than human brain in focusing on relevant information.[D] best used in a controlled environment.Text 3Could the bad old days of economic decline be about to return? Since OPEC agreed to supply-cuts in March, the price of crude oil has jumped to almost $26 a barrel, up from less than $10 last December. This near-tripling of oil prices calls up scary memories of the 1973 oil shock, when prices quadrupled, and 1979-1980, when they also almost tripled. Both previous shocks resulted in double-digit inflation and global economic decline. So where are the headlines warning of gloom and doom this time?The oil price was given another push up this week when Iraq suspended oil exports. Strengthening economic growth, at the same time as winter grips the northern hemisphere, could push the price higher still in the short term.Yet there are good reasons to expect the economic consequences now to be less severe than in the 1970s. In most countries the cost of crude oil now accounts for a smaller share of the price of petrol than it did in the 1970s. In Europe, taxes account for up to four-fifths of the retail price, so even quite big changes in the price of crude have a more muted effect on pump prices than in the past.Rich economies are also less dependent on oil than they were, and so less sensitive to swings in the oil price. Energy conservation, a shift to other fuels and a decline in the importance of heavy, energy-intensive industries have reduced oil consumption. Software, consultancy and mobile telephones use far less oil than steel or car production. For each dollar of GDP (in constant prices) rich economies now use nearly 50% less oil than in 1973. The OECD estimates in its latest Economic Outlook that, if oil prices averaged $22 a barrel for a full year, compared with $13 in 1998, this would increase the oil import bill in rich economies by only 0.25-0.5% of GDP. That is less than one-quarter of the income loss in 1974 or 1980. On the other hand, oil-importing emerging economies—to which heavy industry has shifted—have become more energy-intensive, and so could be more seriously squeezed.One more reason not to lose sleep over the rise in oil prices is that, unlike the rises in the 1970s, it has not occurred against the background of general commodity-price inflation and global excess demand. A sizable portion of the world is only just emerging from economic decline. The Economist’s commodity price index is broadly unchanging from a year ago. In 1973 commodity prices jumped by 70%, and in 1979 by almost 30%.31. The main reason for the latest rise of oil price is_______[A] global inflation. [B] reduction in supply.[C]fast growth in economy. [D] Iraq’s suspension of exports.32. It can be inferred from the text that the retail price of petrol will go updramatically if______.[A] price of crude rises. [B] commodity prices rise.[C] consumption rises. [D] oil taxes rise.33. The estimates in Economic Outlook show that in rich countries_______.[A]heavy industry becomes more energy-intensive.[B]income loss mainly results from fluctuating crude oil prices.[C]manufacturing industry has been seriously squeezed.[D]oil price changes have no significant impact on GDP.34. We can draw a conclusion from the text that_______.[A]oil-price shocks are less shocking now.[B]inflation seems irrelevant to oil-price shocks.[C]energy conservation can keep down the oil prices.[D]the price rise of crude leads to the shrinking of heavy industry.35. From the text we can see that the writer seems__________.[A]optimistic. [B]sensitive. [C]gloomy. [D]scared.Text 4The Supreme Court’s decisions on physician-assisted suicide carry important implications for how medicine seeks to relieve dying patients of pain and suffering.Although it ruled that there is no constitutional right to physician-assisted suicide, the Court in effect supported the medical principle of “double effect”, a centuries-old moral principle holding that an action having two effects—a good one that is intended and a harmful one that is foreseen—is permissible if the actor intends only the good effect.Doctors have used that principle in recent years to justify using high doses of morphine to control terminally ill patients’pain, even though increasing dosages will eventually kill the patient.Nancy Dubler, director of Montefiore Medical Center, contends that the principle will shield doctors who “until now have very, very strongly insisted that they could not give patients sufficient medication to control their pain if that might hasten death”.George Annas, chair of the health law department at Boston University, maintains that, as long as a doctor prescribes a drug for a legitimate medical purpose, the doctor has done nothing illegal even if the patient uses the drug to hasten death. “It’s like surgery,” he says. “We don’t call those deaths homicides because the doctors didn’t intend to kill their patients, although they risked their death. If you’re a physician, you can risk your patient’s suicide as long as you don’t intend their suicide.”On another level, many in the medical community acknowledge that the assisted-suicide debate has been fueled in part by the despair of patients for whom modern medicine has prolonged the physical agony of dying.Just three weeks before the Court’s ruling on physician-assisted suicide, theNational Academy of Science (NAS) released a two-volume report, Approaching Death: Improving Care at the End of Life. It identifies the undertreatment of pain and the aggressive use of “ineffectual and forced medical procedures that may prolong and even dishonor the period of dying” as the twin problems of end-of-life care.The profession is taking steps to require young doctors to train in hospices, to test knowledge of aggressive pain management therapies, to develop a Medicare billing code for hospital-based care, and to develop new standards for assessing and treating pain at the end of life.Annas says lawyers can play a key role in insisting that these well-meaning medical initiatives translate into better care. “Large numbers of physicians seem unconcerned with the pain their patients are needlessly and predictably suffering”, to the extent that it constitutes “systematic patient abuse”. He says medical licensing boards “must make it clear...that painful deaths are presumptively ones that are incompetently managed and should result in license suspension”.36. From the first three paragraphs, we learn that .[A] doctors used to increase drug dosages to control their patients’pain[B] it is still illegal for doctors to help the dying end their lives[C] the Supreme Court strongly opposes physician-assisted suicide[D] patients have no constitutional right to commit suicide37. Which of the following statements its true according to the text?[A] Doctors will be held guilty if they risk their patients’death.[B] Modern medicine has assisted terminally ill patients in painless recovery.[C] The Court ruled that high-dosage pain-relieving medication can beprescribed.[D] A doctor’s medication is no longer justified by his intentions.38. According to the NAS’s report, one of the problems in end-of-life care is .[A] prolonged medical procedures [B] inadequate treatment of pain[C] systematic drug abuse [D] insufficient hospital care39. Which of the following best defines the word “aggressive”(line 4, paragraph7)?[A] Bold. [B] Harmful. [C] Careless. [D] Desperate40. George Annas would probably agree that doctors should be punished if they .[A] manage their patients incompetently[B] give patients more medicine than needed[C] reduce drug dosages for their patients[D] prolong the needless suffering of the patientsPart BDirections:Read the following text carefully and then translate the underlined segments into Chinese. Your translation should be written clearly on ANSWER SHEET 2. (10 points)Almost all our major problems involve human behavior, and they cannot be solved by physical and biological technology alone. What is needed is a technology of behavior, but we have been slow to develop the science from which such a technology might be drawn.(41)One difficulty is that almost all of what is called behavioral science continues to trace behavior to states of mind, feelings, traits of character, human nature, and so on. Physics and biology once followed similar practices and advanced only when they discarded them. (42)The behavioral sciences have been slow to change partly because the explanatory items often seem to be directly observed and partly because other kinds of explanations have been hard to find. The environment is obviously important, but its role has remained obscure. It does not push or pull, it selects, and this function is difficult to discover and analyze.(43)The role of natural selection in evolution was formulated only a little more than a hundred years ago, and the selective role of the environment in shaping and maintaining the behavior of the individual is only beginning to be recognized and studied. As the interaction between organism and environment has come to be understood, however, effects once assigned to states of mind, feelings, and traits are beginning to be traced to accessible conditions, and a technology of behavior may therefore become available. It will not solve our problems, however, until it replaces traditional prescientific views, and these are strongly entrenched. Freedom and dignity illustrate the difficulty. (44)They are the possessions of the autonomous(self-governing)man of traditional theory, and they are essential to practices in which a person is held responsible for his conduct and given credit for his achievements. A scientific analysis shifts both the responsibility and the achievement to the environment. It also raises questions concerning “values”. Who will use a technology and to what ends? (45)Until these issues are resolved, a technology of behavior will continue to be rejected, and with it possibly the only way to solve our problems.Section III Writing46. Directions:Study the following picture carefully and write an essay enti tled “Cultures National and International”.In the essay you should1. describe the picture and interpret its meaning, and2. give your comment on the phenomenon.You should write about 200 words neatly on ANSWER SHEET 2. (20 points)An American girl in traditional Chinese costume(服装)第一部分英语知识应用试题解析一、文章总体分析本文主要介绍了计算机的发展对通信革命及人们的生存方式产生的影响。

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