2006-2007Adaan(1)
北航-工科数学分析2006-2007 期末试题
2006-2007学年第二学期期末考试试题数学分析一、 填空题 （每小题6分，共30分）1． 设向量场),,(222222y x x z z y F +++=，则_,____________________=F div ._______________________________=F rot ２．在曲面0:2=−Σ−z x e y 上点)2,1,1(处的法线方程是.________________________３．设}0,1|),{(22≥=+=y y x y x L ，则.___________2=∫L ds x４．锥面22y x z +=被圆柱面x y x 222=+截下的曲面的面积为._______________ ５．求极限._____________)1(lim 2200222=+∫∫→xx t x t x dt e x dt e二、 （本题满分１０分）计算定积分∫−=10ln 1dx x x I ．三、 （本题满分１０分）计算∫∫∫V z dxdydz e ||，其中1:222≤++z y x V ． 四、 （本题满分１０分）设函数)(x f 在),(+∞−∞内具有一阶连续导数，L 是上半平面)0(>y 内的有向分段光滑曲线，其起点为),(b a ，终点为),(d c ．记∫−++=L dy xy f y y x dx xy f y y I ]1)([)](1[1222，（１） 证明曲线积分I 与路径L 无关；（２） 当cd ab =时，求I 的值．（３）五、 （本题满分１０分）求解微分方程0)sin ()(22=+−−dy y x dx y x ．六、 （本题满分１０分）计算∫∫Σ−+−xzdxdyxydzdx dydz x 48)1(22，其中Σ是由曲线)0(a y e x y ≤≤=绕x 轴旋转而成的旋转曲面，其法向量与x 轴正向的夹角恒大于2π．七、 （本题满分１０分）计算∫−+−+−=L dzy x dy x z dx z y I )()()(222222，其中L 为平面1=++z y x 被三个坐标平面所截三角形Σ的边界，若从x 轴的正向看去，定向为顺时针方向．八、 （本题满分１０分） 证明∫∞+−+18sin dx y x x e xy 在),0[+∞上一致收敛．九、 加选题（本题满分１０分）设L 是不经过点)0,2(及点)0,2(−的分段光滑的简单闭曲线，试就L 的不同情形计算曲线积分∫ +++−+−−+ ++++−=L dy y x x y x x dx y x y y x y I .)2(2)2(2)2()2(22222222 其中L 取正向．1.解：0)()()(222222=+∂∂++∂∂++∂∂=y x zx z y z y x F div ,222222y x x z z y z y xk j i F rot +++∂∂∂∂∂∂= , ),,(2y x x z z y F rot −−−= , 或k y x j x z i z y F rot )(2)(2)(2−+−+−=.2.解：z x e y F −−=2, ),1,2(),,(22z x z x z y x e e F F F −−−=,)1,1,2(|),,()2,1,1(−==z y x F F F n , 于是所求法线方程为121121−=−=−−z y x 3.解：。
2006-2007(二)数据库试卷B
,考试作弊将带来严重后果！华南理工大学期末考试《数据库》试卷B1. 考前请将密封线内各项信息填写清楚； 所有答案请直接答在试卷上； ．考试形式：闭卷；20小题，每小题1分，共20分, 请将答案填在下表内）下面列出的数据库管理技术发展的三个阶段中，没有专门的软件对数据进行管理的是（ ）。
．人工管理阶段 ．文件系统阶段 ．数据库阶段 和 II 只有 II 和 III 只有 I数据库设计中，用E －R 图来描述信息结构但不涉及信息在计算机中的表示，这是数据库 ）。
需求分析阶段 逻辑设计阶段 概念设计阶段 物理设计阶段3. 对由SELECT--FROM—WHERE—GROUP--ORDER组成的SQL语句，其在被DBMS处理时，各子句的执行次序为（）。
A. SELECT—FROM—GROUP—WHERE—ORDERB. FROM——SELECT--WHERE——GROUP——ORDERC. FROM——WHERE——GROUP——SELECT——ORDERD. SELECT——FROM——WHERE——GROUP——ORDER4. 下列四项中，不属于数据模型要素的是（）。
A. 数据结构B. 数据冗余C. 数据操作D. 完整性约束5. 现有如下关系：学生（学号，姓名，性别，出生日期，专业，系编号）系（系编号，系名称，系主任，电话，地点）其中，学生关系中的外码是（）。
A. 系编号B. 学号C. 系编号和系名称D. 系编号和学号6.关系模型中实现实体间 N：M 联系是通过增加一个（）。
A. 关系或一个属性实现B. 属性实现C. 关系实现D. 关系和一个属性实现7. 五种基本关系代数运算是（）。
A. U，n，x，π和σB. U，－，∞，π和σC. U，n，∞，π和σD. U，－，×，π和σ8. SQL语言中，删除一个索引的命令是（）。
A. DELETEB. DROPC. CLEARD. REMOVE9. 若要在基本表S中增加一列CN（课程名），可用（）。
2006-07年专八真题听力原文详析
2006年真题听力原文详析SECTION A Mini-lecture重点词汇：1) the competent reader 有能力的读者词汇扩展：very /highly /extremely competent; competent to do sth.; Incompetent, competency=competence reader competency 下文中有acquire a good deal of competency2) invariably 不变地始终如一地词汇扩展：vary=change=alter/ varied=various(variously):各种各样的；同义词 =always =every time3)formal property of grammar 文法的形式特性词汇扩展：Property= real estate/ possessions4) cultural codes 文化准则词汇扩展：universal product code 通用商品条形码、 bar code条形码、binary code 二进码 coded message 用密码编写的信息反义词：decode 解码5) context 词汇扩展：contextual contextualize: contextualize the problem 了解问题的背景音近词 contestSECTION B Interview重点词汇：1）confirm our own ideas: 证实我们自己的想法词汇扩展：confirm /conform Conform to /with=obey 符合，遵守；conformist 墨守成规的人 conformity2）the practical orientation of the course 以实用为导向的课程词汇扩展：orientation course 导修课（情况说明）；competence-oriented education 素质教育（另一种说法education for all-round development） examination-oriented education 应试教育3) sophisticated=complicated 词汇扩展：世故的, 老练的（人) sophisticated tastes 高雅的口味: sophisticated modern weapons 精良的现代武器（物）4）advertising campaign 广告宣传活动（计划）词汇扩展: advertising [ˈædvətaizi ŋ]n.[总称]广告 a.广告的； advertising strategy 广告策略； advertising culture 广告文化 Advertising Business Permit 广告经营许可； permit n.许可证，执照5）cutback n.削减生产，削减人员词汇扩展:sharp cutbacks in the military budget；【电影】倒叙；6）secretarial [sekrə’teəriəl] a.秘书的，文书的7）handy: 1, 方便的；2. 在手边的词汇扩展：be handy with sth. 巧于某事/ to come in handy 迟早有用/ be handy for doing sth. 对做某事有用8）undergraduate 本科生词汇扩展：postgraduate 研究生 graduate 泛指毕业生nursery 托儿所kindergartenparental teaching 家长对孩子的教导elementary/primary schoolsecondary school 中学universitycollege 学院institute 学院研究所polytechnic school/college 理工学院vocational school/college 职业学院technical school 技术学校faculty 学部school/college/division 学院department 系major/major strand/subjectselective/elective/optional courses 选修课required/compulsory courses 必修课elementary 基础的intermediate 中级的advanced 高级的internship 实习qualification 资历certificate 证书执照diploma 文凭degree：bachelor’s degreemaster’s degreepostgraduate schoolgraduate 大学毕业生undergraduate 本科生postgraduateBA/Bachelor of ArtsBSc/Bachelor of ScienceMA/Master of ArtsMSc/Master of SciencePh.D./Doctor of Philosophy 博士MBA/Master of Business Administration工商管理硕士9）enroll in 登记入学SECTION C NEWS BROADCASTNews Item 1重点词汇Aircraft 飞机航空器（单复数同形）词汇扩展：aircraft-carrier 航空母舰Jet喷气式飞机 jet-lag时差综合症 space shuttle 航天飞机At a gunpoint 在枪口威胁下 The driver was robbed at gunpoint. Judith Arlene ResnikNASA astronautNationality AmericanStatus 状态Killed during missionBorn April 5, 1949 Akron, OhioDied January 28, 1986 (aged 36) Cape Canaveral, FloridaOther occupation EngineerTime in space 6d 00h 56mSelection 1978 NASA GroupMissions STS-41-D, STS-51-LMission insigniaAwardsEvacuate vt.转移，撤离，疏散Boltimore重点句子The former world heavy weight champion was released on Monday after 4 months behind bars from an assault in the wake of a traffic accident last August.因为去年八月的一次交通事故中人身攻击他人被投入监狱4个月后，前世界重量级拳击冠军在周一被释放。
2006--2007学年度高考英语模拟试题
2006— 2007学年度英语高考模拟试题第一卷第一部分：听力（共两节，满分30分）第一节（共5小题；每小题1.5分，满分7.5分）听下面5段对话。
每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。
听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1.What does the woman mean?A. He has dialed the wrong number.B. John Smith is not in.C. Nobody is called John Smith.2. Why isn't the man going to work?A. He's sick.B. His boss has fired him.C. He wants to play tennis.3. What will the man have?A. Bread.B. Milk.C. Eggs.4. Where does this conversation probably take place?A. In an office.B. In a street.C. In a shop.5. What's the man's job?A. He is a lawyer.B. He is a shop assistant.C. He works for lawyers.第二节（共15小题；每小题1.5分，满分22.5分）听下面5段对话独白。
每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。
听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。
听第6段材料，回答第6至8题。
6.Where did the dialogue happen?A. At the station.B. In the hospital.C. In the shop.7.What is the woman going to buy?A. Bag.B. Shoes.C. Trousers.8.What color does her daughter like?A. White.B.Blue. C. Red.听第7段材料，回答第9~ 11题。
2006考研英语(一)真题
2006年全国硕士研究生招生考试英语（一）试题Section I Use of English9.[A]predicts[B]displays[C]proves[D]discovers10.[A]assist[B]track[C]sustain[D]dismiss11.[A]Hence[B]But[C]Even[D]Only12.[A]lodging[B]shelter[C]dwelling[D]house13.[A]searching[B]strolling[C]crowding[D]wandering14.[A]when[B]once[C]while[D]whereas15.[A]life[B]existence[C]survival[D]maintenance16.[A]around[B]over[C]on[D]up17.[A]complex[B]comprehensive[C]complementary[D]compensating18.[A]So[B]Since[C]As[D]Thus19.[A]puts[B]interprets[C]assumes[D]makes20.[A]supervision[B]manipulation[C]regulation[D]coordinationSection 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 SHEET1.(40points)Text1In spite of“endless talk of difference,”American society is an amazing machine for homogenizing people. There is“the democratizing uniformity of dress and discourse,and the casualness and absence of deference”characteristic of popular culture.People are absorbed into“a culture of consumption”launched by the19th-century department stores that offered“vast arrays of goods in an elegant atmosphere.Instead of intimate shops catering to a knowledgeable elite”these were stores“anyone could enter,regardless of class or background.This turned shopping into a public and democratic act.”The mass media,advertising and sports are other forces for homogenization.Immigrants are quickly fitting into this common culture,which may not be altogether elevating but is hardly poisonous.Writing for the National Immigration Forum,Gregory Rodriguez reports that today’s immigration isneither at unprecedented levels nor resistant to assimilation.In1998immigrants were9.8percent of the population;in1900,13.6percent.In the10years prior to1990,3.1immigrants arrived for every1,000residents; in the10years prior to1890,9.2for every1,000.Now,consider three indices of assimilation—language,home ownership and intermarriage.The1990Census revealed that“a majority of immigrants from each of the fifteen most common countries of origin spoke English‘well’or‘very well’after ten years of residence.”The children of immigrants tend to be bilingual and proficient in English.“By the third generation,the original language is lost in the majority of immigrant families.”Hence the description of America as a“graveyard”for languages.By1996foreign-born immigrants who had arrived before1970had a home ownership rate of75.6percent,higher than the69.8percent rate among native-born Americans.Foreign-born Asians and Hispanics“have higher rates of intermarriage than do U.S.-born whites and blacks.”By the third generation,one third of Hispanic women are married to non-Hispanics,and41percent of Asian-American women are married to non-Asians.Rodriguez notes that children in remote villages around the world are fans of superstars like Arnold Schwarzenegger and Garth Brooks,yet“some Americans fear that immigrants living within the United States remain somehow immune to the nation’s assimilative power.”Are there divisive issues and pockets of seething anger in America?Indeed.It is big enough to have a bit of everything.But particularly when viewed against America’s turbulent past,today’s social indices hardly suggest a dark and deteriorating social environment.21.The word“homogenizing”(Line2,Paragraph1)most probably means________.[A]identifying[B]associating[C]assimilating[D]monopolizing22.According to the author,the department stores of the19th century________.[A]played a role in the spread of popular culture[B]became intimate shops for common consumers[C]satisfied the needs of a knowledgeable elite[D]owed its emergence to the culture of consumption23.The text suggests that immigrants now in the U.S.________.[A]are resistant to homogenization[B]exert a great influence on American culture[C]are hardly a threat to the common culture[D]constitute the majority of the population24.Why are Arnold Schwarzenegger and Garth Brooks mentioned in Paragraph5?[A]To prove their popularity around the world.[B]To reveal the public’s fear of immigrants.[C]To give examples of successful immigrants.[D]To show the powerful influence of American culture.25.In the author’s opinion,the absorption of immigrants into American society is_______.[A]rewarding[B]successful[C]fruitless[D]harmfulText2Stratford-on-Avon,as we all know,has only one industry—William Shakespeare—but there are two distinctly separate and increasingly hostile branches.There is the Royal Shakespeare Company(RSC),which presents superb productions of the plays at the Shakespeare Memorial Theatre on the Avon.And there are the townsfolk who largely live off the tourists who come,not to see the plays,but to look at Anne Hathaway’s Cottage,Shakespeare’s birthplace and the other sights.The worthy residents of Stratford doubt that the theatre adds a penny totheir revenue.They frankly dislike the RSC’s actors,them with their long hair and beards and sandals and noisiness.It’s all deliciously ironic when you consider that Shakespeare,who earns their living,was himself an actor(with a beard)and did his share of noise-making.The tourist streams are not entirely separate.The sightseers who come by bus—and often take in Warwick Castle and Blenheim Palace on the side—don’t usually see the plays,and some of them are even surprised to find a theatre in Stratford.However,the playgoers do manage a little sight-seeing along with their playgoing.It is the playgoers,the RSC contends,who bring in much of the town’s revenue because they spend the night(some of them four or five nights)pouring cash into the hotels and restaurants.The sightseers can take in everything and get out of town by nightfall.The townsfolk don’t see it this way and the local council does not contribute directly to the subsidy of the Royal Shakespeare Company.Stratford cries poor traditionally.Nevertheless every hotel in town seems to beadding a new wing or cocktail lounge.Hilton is building its own hotel there,which you may be sure will be decorated with Hamlet Hamburger Bars,the Lear Lounge,the Banquo Banqueting Room,and so forth,and will be very expensive.Anyway,the townsfolk can’t understand why the Royal Shakespeare Company needs a subsidy.(The theatre has broken attendance records for three years in a st year its1,431seats were94per cent occupied all year long and this year they’ll do better.)The reason,of course,is that costs have rocketed and ticket prices have stayed low.It would be a shame to raise prices too much because it would drive away the young people who are Stratford’s most attractive clientele.They come entirely for the plays,not the sights.They all seem to look alike (though they come from all over)—lean,pointed,dedicated faces,wearing jeans and sandals,eating their buns and bedding down for the night on the flagstones outside the theatre to buy the20seats and80standing-room tickets held for the sleepers and sold to them when the box office opens at10:30a.m.26.From the first two paragraphs,we learn that________.[A]the townsfolk deny the RSC’s contribution to the town’s revenue[B]the actors of the RSC imitate Shakespeare on and off stage[C]the two branches of the RSC are not on good terms[D]the townsfolk earn little from tourism27.It can be inferred from Paragraph3that________.[A]the sightseers cannot visit the Castle and the Palace separately[B]the playgoers spend more money than the sightseers[C]the sightseers do more shopping than the playgoers[D]the playgoers go to no other places in town than the theater28.By saying“Stratford cries poor traditionally”(Line2,Paragraph4),the author implies that______.[A]Stratford cannot afford the expansion projects[B]Stratford has long been in financial difficulties[C]the town is not really short of money[D]the townsfolk used to be poorly paid29.According to the townsfolk,the RSC deserves no subsidy because________.[A]ticket prices can be raised to cover the spending[B]the company is financially ill-managed[C]the behavior of the actors is not socially acceptable[D]the theatre attendance is on the rise30.From the text we can conclude that the author________.[A]is supportive of both sides[B]favors the townsfolk’s view[C]takes a detached attitude[D]is sympathetic to the RSCText3When prehistoric man arrived in new parts of the world,something strange happened to the large animals: they suddenly became extinct.Smaller species survived.The large,slow-growing animals were easy game,and were quickly hunted to extinction.Now something similar could be happening in the oceans.That the seas are being overfished has been known for years.What researchers such as Ransom Myers and Boris Worm have shown is just how fast things are changing.They have looked at half a century of data from fisheries around the world.Their methods do not attempt to estimate the actual biomass(the amount of living biological matter)of fish species in particular parts of the ocean,but rather changes in that biomass over time. According to their latest paper published in Nature,the biomass of large predators(animals that kill and eat other animals)in a new fishery is reduced on average by80%within15years of the start of exploitation.In some long-fished areas,it has halved again since then.Dr.Worm acknowledges that these figures are conservative.One reason for this is that fishing technology has improved.Today’s vessels can find their prey using satellites and sonar,which were not available50years ago.That means a higher proportion of what is in the sea is being caught,so the real difference between present and past is likely to be worse than the one recorded by changes in catch sizes.In the early days,too,longlines would have been more saturated with fish.Some individuals would therefore not have been caught,since no baited hooks would have been available to trap them,leading to an underestimate of fish stocks in the past. Furthermore,in the early days of longline fishing,a lot of fish were lost to sharks after they had been hooked. That is no longer a problem,because there are fewer sharks around now.Dr.Myers and Dr.Worm argue that their work gives a correct baseline,which future management efforts must take into account.They believe the data support an idea current among marine biologists,that of the “shifting baseline”.The notion is that people have failed to detect the massive changes which have happened in the ocean because they have been looking back only a relatively short time into the past.That matters because theory suggests that the maximum sustainable yield that can be cropped from a fishery comes when the biomassof a target species is about50%of its original levels.Most fisheries are well below that,which is a bad way to do business.31.The extinction of large prehistoric animals is noted to suggest that________.[A]large animals were vulnerable to the changing environment[B]small species survived as large animals disappeared[C]large sea animals may face the same threat today[D]slow-growing fish outlive fast-growing ones32.We can infer from Dr.Myers and Dr.Worm’s paper that________.[A]the stock of large predators in some old fisheries has reduced by90%[B]there are only half as many fisheries as there were15years ago[C]the catch sizes in new fisheries are only20%of the original amount[D]the number of large predators dropped faster in new fisheries than in the old33.By saying“these figures are conservative”(Line1,paragraph3),Dr.Worm means that________.[A]fishing technology has improved rapidly[B]then catch-sizes are actually smaller than recorded[C]the marine biomass has suffered a greater loss[D]the data collected so far are out of date34.Dr.Myers and other researchers hold that________.[A]people should look for a baseline that can work for a longer time[B]fisheries should keep their yields below50%of the biomass[C]the ocean biomass should be restored to its original level[D]people should adjust the fishing baseline to the changing situation35.The author seems to be mainly concerned with most fisheries’________.[A]management efficiency[B]biomass level[C]catch-size limits[D]technological applicationText4Many things make people think artists are weird.But the weirdest may be this:artists’only job is to explore emotions,and yet they choose to focus on the ones that feel bad.This wasn’t always so.The earliest forms of art,like painting and music,are those best suited for expressing joy.But somewhere from the19th century onward,more artists began seeing happiness as meaningless,phony or,worst of all,boring,as we went from Wordsworth’s daffodils to Baudelaire’s flowers of evil.You could argue that art became more skeptical of happiness because modern times have seen so much misery.But it’s not as if earlier times didn’t know perpetual war,disaster and the massacre of innocents.The reason,in fact,may be just the opposite:there is too much damn happiness in the world today.After all,what is the one modern form of expression almost completely dedicated to depicting happiness? Advertising.The rise of anti-happy art almost exactly tracks the emergence of mass media,and with it,a commercial culture in which happiness is not just an ideal but an ideology.People in earlier eras were surrounded by reminders of misery.They worked until exhausted,lived with few protections and died young.In the West,before mass communication and literacy,the most powerful mass medium was the church,which reminded worshippers that their souls were in danger and that they would someday be meat for worms.Given all this,they did not exactly need their art to be a bummer too.Today the messages the average Westerner is surrounded with are not religious but commercial,and forever happy.Fast-food eaters,news anchors,text messengers,all smiling,smiling,smiling.Our magazines feature beaming celebrities and happy families in perfect homes.And since these messages have an agenda—to lure us to open our wallets—they make the very idea of happiness seem unreliable.“Celebrate!”commanded the ads for the arthritis drug Celebrex,before we found out it could increase the risk of heart attacks.But what we forget—what our economy depends on us forgetting—is that happiness is more than pleasure without pain.The things that bring the greatest joy carry the greatest potential for loss and disappointment.Today, surrounded by promises of easy happiness,we need art to tell us,as religion once did,Memento mori:remember that you will die,that everything ends,and that happiness comes not in denying this but in living with it.It’s a message even more bitter than a clove cigarette,yet,somehow,a breath of fresh air.36.By citing the examples of poets Wordsworth and Baudelaire,the author intends to show that________.[A]poetry is not as expressive of joy as painting or music[B]art grows out of both positive and negative feelings[C]poets today are less skeptical of happiness[D]artists have changed their focus of interest37.The word“bummer”(Line5,paragraph5)most probably means something________.[A]religious[B]unpleasant[C]entertaining[D]commercial38.In the author’s opinion,advertising________.[A]emerges in the wake of the anti-happy art[B]is a cause of disappointment for the general public[C]replace the church as a major source of information[D]creates an illusion of happiness rather than happiness itself39.We can learn from the last paragraph that the author believes________.[A]happiness more often than not ends in sadness[B]the anti-happy art is distasteful but refreshing[C]misery should be enjoyed rather than denied[D]the anti-happy art flourishes when economy booms40.Which of the following is true of the text?[A]Religion once functioned as a reminder of misery.[B]Art provides a balance between expectation and reality.[C]People feel disappointed at the realities of modern society.[D]Mass media are inclined to cover disasters and deaths.Part BDirections:In the following article,some sentences have been removed.For Questions41-45,choose the most suitable one from the list A-G to fit into each of numbered gaps.There are two extra choices,which you do not need to use.Mark your answers on ANSWER SHEET1.(10points)On the north bank of the Ohio river sits Evansville,Ind.,home of David Williams,52,and of a riverboat casino(a place where gambling games are played).During several years of gambling in that casino,Williams,a state auditor earning$35,000a year,lost approximately$175,000.He had never gambled before the casino sent him a coupon for$20worth of gambling.He visited the casino,lost the$20and left.On his second visit he lost$800.The casino issued to him,as a good customer,a“Fun Card”,which when used in the casino earns points for meals and drinks,and enables thecasino to track the user’s gambling activities.For Williams,these activities become what he calls“electronic heroin”.(41)________.In1997he lost$21,000to one slot machine in two days.In March1997he lost$72,186.He sometimes played two slot machines at a time,all night,until the boat docked at5a.m.,then went back aboard when the casino opened at9a.m.Now he is suing the casino,charging that it should have refused his patronage because it knew he was addicted.It did know he had a problem.In March1998a friend of Williams’s got him involuntarily confined to a treatment center for addictions, and wrote to inform the casino of Williams’s gambling problem.The casino included a photo of Williams among those of banned gamblers,and wrote to him a“cease admissions”letter.Noting the“medical/psychological”nature of problem gambling behavior,the letter said that before being readmitted to the casino he would have to present medical/psychological information demonstrating that patronizing the casino would pose no threat to his safety or well-being.(42)________.The Wall Street Journal reports that the casino has24signs warning:“Enjoy the fun...and always bet with your head,not over it.”Every entrance ticket lists a toll-free number for counseling from the Indiana Department of Mental Health.Nevertheless,Williams’s suit charges that the casino,knowing he was“helplessly addicted to gambling,”intentionally worked to“lure”him to“engage in conduct against his will.”Well.(43)________.The fourth edition of the Diagnostic and Statistical Manual of Mental Disorders says“pathological gambling”involves persistent,recurring and uncontrollable pursuit less of money than of the thrill of taking risks in quest of a windfall.(44)________.Pushed by science,or what claims to be science,society is reclassifying what once were considered character flaws or moral failings as personality disorders akin to physical disabilities.(45)________.Forty-four states have lotteries,29have casinos,and most of these states are to varying degrees dependent on—you might say addicted to—revenues from wagering.And since the first Internet gambling site was created in1995,competition for gamblers’dollars has become intense.The Oct.28issue of Newsweek reported that2 million gamblers patronize1,800virtual casinos every week.With$3.5billion being lost on Internet wagers this year,gambling has passed pornography as the Web’s most profitable business.Section III WritingPart A51.DirectionsYou want to contribute to Project Hope by offering financial aid to a child in a remote area.Write a letter to the department concerned,asking them to help find a candidate.You should specify what kind of child you want to help and how you will carry out your plan.Write your letter with no less than100words.Write it neatly on ANSWER SHEET2.Do not sign your name at the end of the letter;use“Li Ming”instead.Do not write the address.(10points)Part B52.Directions:Study the following photos carefully and write an essay in which you should1.describe the photos briefly,2.interpret the social phenomenon reflected by them,and3.give your point of view.You should write160-200words neatly on ANSWER SHEET2.(20points)。
南昌大学-2006～2007学年第二学期操作系统期末考试试卷C卷
南昌大学2006〜2007学年第二学期期末考试试卷试卷编号：（C ）卷单项选择题（每题1分，共20分，答案请填在题后的括号内）1、操作系统的功能是_________ O （）（1）把源程序编译成目标程序（2）控制、管理计算机系统的资源和程序的执行（3）实现计算机用户之间的信息交流（4）实现计算机硬件和软件之间的转换2、操作系统采用多道程序设计技术提高 CPU和外部设备的°（）（1）稳定性（2）利用率（3）可靠性（4）兼容性3、批处理系统的主要缺点是°（）（1） CPU勺利用率不高（2）失去了交互性（3）不具备并行性（4）以上都不是4、引入进程概念的关键在于°（）（1）独享资源（2）共享资源（3）顺序执行（4）便于执行5、在多进程系统中，进程什么时候占用处理器，取决于°（）（1）进程相应的程序段的长度（2）进程调度策略（3）进程总共需要运行时间多少（4）进程完成什么功能6、当一个进程就要退出等待队列而进入就绪队列。
（）（1）启动了外设（2）用完了规定的时间片（3）获得了所等待的资源（4）能得到所等待的处理器7、进程和程序的一个本质区别是°（）（1）前者分时使用CPU后者独占CPU （2）前者存储在内存，后者存储在外存（3）前者为动态的，后者为静态的（4）前者在一个文件中，后者在多个文件中8临界区是指并发进程中访问共享变量的段（1）管理信息（2）信息存储（3）程序（4）数据9、一种既有利于短小作业又兼顾到长作业的作业调度算法是° （）（1）先来先服务（2）轮转（3）最高响应比优先（4）最短作业优先10、一作业8: 00到达系统，估计运行时间为1小时，若10: 00开始执行该作业，其响应比是°（）（1） 0. 5 （2） 1 （3） 2 （4） 311、产生系统死锁的原因可能是由于°（）（1）进程释放资源（2）多个进程竞争，资源出现了循环等待（3）一个进程进入死循环（4）多个进程竞争共享型设备12、采用资源剥夺法可解除死锁，还可以采用方法解除死锁。
06年研数值分析A卷
武 汉 大 学2006~2007学年第一学期硕士研究生期末考试试题（A 卷） 科目名称：数值分析 学生所在院： 学号： 姓名： 注意：所有的答题内容必须答在答题纸上，凡答在试题或草稿纸上的一律无效。
一、（12分）设方程组b Ax =为⎪⎪⎭⎫ ⎝⎛=⎪⎪⎭⎫ ⎝⎛⎪⎪⎭⎫ ⎝⎛37111221x x （1） 用Doolittle 分解法求解方程组；（2） 求矩阵A 的条件数∞)(A Cond二、（12分）设A 为n 阶对称正定矩阵，A 的n 个特征值为n λλλ≤≤≤ 21，为求解方程组b Ax =，建立迭代格式 )()()()1(k k k Ax b x x -+=+ω，求出常数ω的取值范围，使迭代格式收敛。
三、（12分）已知数据试用二次多项式c bx ax x p ++=2)(拟合这些数据。
四、（14分）已知 )(x f y = 的数据如下：（1）求)(x f 的Hermite 插值多项式)(3x H ；（2）为求⎰31)(dx x f 的值，采用算法：R dx x H dx x f +=⎰⎰31331)()( 试导出截断误差R五、（12分）确定常数 a ，b 的值，使积分dx e b ax b a I x 210)(),(⎰-+= 取得最小值。
六、（12）确定常数i A ，使求积公式)2()1()0()(32120f A f A f A dx x f ++≈⎰的代数精度尽可能高，并问是否是Gauss 型公式。
七、（12分）设)(x ϕ导数连续，迭代格式)(1k k x x ϕ=+一阶局部收敛到点*x 。
对于常数λ，构造新的迭代格式：)(1111k k k x x x ϕλλλ+++=+ 问如何选取λ，使新迭代格式有更高的收敛阶，并问是几阶收敛。
八、（14分）对于下面求解常微分方程初值问题 ⎪⎩⎪⎨⎧==00)(),(y t y y t f dt dy 的单步法：⎪⎪⎩⎪⎪⎨⎧++==+=+)21,21(),(12121hk y h t f k y t f k hk y y n n n n n n （1） 验证它是二阶方法；（2） 确定此单步法的绝对稳定区域。
2006～2007第一学期汇编(B)卷及答案
BX ,
第 1 页 共 7 页
7、中断向量是（ ） 。 [A] CPU 响应中断时 IP 和 CS 内容 [B] 中断断点的地址 [C] 中断服务程序的入口地址 [D] 中断服务程序的返回地址 8、根据下面定义的数据段： DESG SEGMENT DAT1 DB ‘1234H’ DAT2 DW 5678H ADDR EQU DAT2－DAT1 DESG ENDS 执行指令 MOV AX，ADDR 后，AX 寄存器中的内容是（ ） 。 [A] 5678H [B] 7856H [C] 1234H [D] 0005H 9、若有 BUF DW 1 2 3 4，则可将数据 02H 取到 AL 寄存器中的指令是（ ） 。 [A] MOV AL BYTE PTR BUF＋1 [B] MOV AL BYTE PTR BUF＋2 [C] MOV AL BYTE PTR BUF＋3 [D] MOV AL BYTE BUF 2 10、定义变量 ARRAY DW 5,6,$+3,3,4,$+3 假如汇编时 ARRAY 分配的偏移地址为 0074H 则汇编后最后一个字单元的内容是（ ） 。 [A] 0081H [B] 008BH [C] 007EH [D] 007DH
两个操作数不能同为存储器操作数，且两个操作数的数据类型 不确定， 改正为：MOV AX，[BX] ADD AX，[SI] 或：MOV AL，[BX] ADD AL，[BP+SI] ； 4、 MOV CS,DX
代码段寄存器 CS 不能作目的操作数，改正为 MOV DS，AX 5、 IMUL 4 乘法指令源操作数不能是立即数， 改正为 MOV CL，4 MUL CL；
南昌大学 2006～2007 学年第一学期期末试卷及答案
2006~2007年河南省专升本考试英语试卷及答案
公共英语试卷 第 1 页2006~2007河南专升本公共英语及其答案2006年河南省普通高等学校选拔优秀专科毕业生进入本科阶段学习考试公共英语试卷Part I Word Formation (10 points)Directions: There are 10 incomplete statements in this part. You should fill in each blank with the proper form of the given word,and write the right answer in the brackets “【 】” .【 】1. She was engaged in an (argue) ______with Roberts about equal payfor men and women.【 】2. These methods are (effect) ______ in English teaching.【 】3. The professor has a large (collect) _____ of books.【 】4. If you read the paper (care) ____, I am sure you will pass the exam.【 】5. The (excite) _____ crowd rushed into the mayor ’s office.【 】6. I don’t think it wise to teach students of different (able) _____ in thesame class.【 】7. The whole world looks upon the rapid (economy) _____ developmentof our country as a great wonder.【 】8. It is (scientific) _____ to think that science can solve all the problemsfor human beings.【 】9. Many television viewers take him as their (favor) _____ actor.【 】10. After he finished the assignment, he found some (addition) _____exercises to do.Directions: In this part there are 40 incomplete sentences. For eachsentence there are four choices marked [A], [B], [C] and [D].Choose the ONE answer that best completes the sentence and writethe choice in the brackets “【】”.【】11. The departure time of the plane has been postponed, so we have nothing to do now but _____.[A] wait [B] to be waiting [C] to wait [D] waiting【】12. I couldn’t understand why he pretended _____ in the g arden.[A] not to see me [C] to see me not[B] not see me [D] to see not me【】13. Only when we came back home, _____ that my watch was missing.[A] did I find [C] I had found[B] I found [D] Had I found【】14. _____ more time, the scientists will be able to work out a good solution to the problem.[A] Given [B] Giving [C] To give [D] Be given【】15. Some of the apples were rotten before reaching the market and _____ away.[A] could be thrown [C] could throw[B] had to be thrown [D] had to throw【】16. _____ in Beijing for more than twenty years, he knows the city very well.[A] Living [B] Lived [C] Having lived [D] To live【】17. Mr. Zhang, _____ came to see me yesterday, is an old friend of my father’s.[A] which [B] that [C] who [D] whom【】18. We plan to increase the output of the machine _____ 7.4 percent this year.[A] at [B] in [C] by [D] with【】19. I don’t mind _____ out for a walk in such bad weather.[A] go [B] to go [C] going [D] gone【】20. As a lawyer he spent a lot of time _____ investigations.[A] conducted [C] conduct[B] to conduct [D] conducting【】21. The new invention is to make our daily life easier, _____ it more difficult.[A] not to make [C] not making[B] not make [D] do not make【】22. _____, the old man had a sharp ear for even the slightest sound.[A] As he was blind [C] Blind as he was[B] As blind as he was [D] As he was just blind【】23. I _____ a little earlier, but I met a friend of mine on the way.[A] should arrive [C] could have arrived[B] would be arriving [D] arrived公共英语试卷第 2 页【】24. The news _____ our football team had won the match excited all of us.[A] what [B] which [C] that [D] as【】25. Henry looked very much _____ when he was caught cheating in the exam.[A] discouraged [B] embarrassed [C] disappointed [D] pleased 【】26. We are interested in the weather because it _____ us so directly.[A] benefits [B] affects [C] guides [D] effects 【】27. Janet, _____ was read by the teacher, is a top student in our class.[A] the composition of hers [C] her composition[B] the composition of whom [D] whose composition【】28. Hardly had he entered the classroom _____ the bell rang.[A] than [B] then [C] when [D] so【】29. I would rather you _____ to the party with her.[A] go [B] went [C] will go [D] has gone 【】30. His English was so poor that he found it difficult to make himself _____.[A] understood [C] be understood[B] understand [D] to understand【】31. The sun heats the earth, _____ makes it possible for plants to grow.[A] that [B] where [C] which [D] what【】32. Little _____ that the police are about to arrest him.[A] does he know [C] he doesn’t know[B] he knows [D] he didn’t know【】33. It’s high time we _____ something to stop road accidents.[A] are doing [B] did [C] will do [D] do【】34. This is the best novel _____ I have ever read.[A] which [B] where [C] that [D] what【】35. It’s necessa ry that the problem _____ in some way or other.[A] is settled [C] be settled[B] has been settled [D] was settled【】36. _____ you say, I am sure that the young man is innocent.[A] Whatever [C] However[B] Whoever [D] Wherever【】37. Staying in a hotel costs _____ renting a room in an apartment for a week.[A] twice as more as [C] twice as much as[B] as more twice as [D] as much twice as【】38. John puts up his hand _____ the teacher asks a question.[A] every time [B] in time [C] some time [D] at times 【】39. When you are free this afternoon, please help me to have these letters _____.[A] to mail [B] mail [C] mailed [D] mailing 【】40. I wish you _____ here last night. All of us were waiting for your arrival.[A] came [C] come公共英语试卷第 3 页[B] had come [D] will come【】41. By the time you arrive in London, we _____ in Europe for two weeks.[A] shall stay [C] have stayed[B] will have stayed [D] have been staying【】42. I didn’t see h im at the meeting yesterday afternoon. He _____ it.[A] mustn’t attend[C] wouldn’t have attended[B] can’t have attended[D] needn’t have attended【】43. I think there’s no comparison between the two cars, one _____ clearly far better than the other.[A] being [B] was [C] having been [D] be【】44. Many of his novels are reported _____ into several foreign languages last year.[A] to be translated [C] being translated[B] to translate [D] to have been translated【】45. Mary said it was _____ box for me to carry.[A] a too heavy [C] too heavy a[B] too a heavy [D] too heavy【】46. The children are required not to leave the building unless _____ to do so.[A] being told [C] be told[B] they will be told [D] told【】47. I’ve never seen the young man _____ next to the director.[A] sits [B] sat [C] sitting [D] to sit【】48. We object _____ carrying out the plan.[A] for [B] to be [C] about [D] to【】49. Shanghai has experienced such great changes that everyone can recognize that it is no longer _____.[A] what it used to [C] the same it used to be[B] that it used to like [D] what it used to be【】50. He bought a new mobile phone last Sunday, because his old one _____.[A] had stolen [B] had been stolen [C] was stolen [D] stolenDirections: There are 4 passages in this part. Each passage isfollowed by some questions or incomplete statements. For each ofthem there are four choices marked [A], [B], [C] and [D]. Youshould decide on the best choice and write it in the brackets“【】”.Passage OneWho takes care of the elderly in the United States today? The fact is that familymembers provide over 80% of the care that elderly people need. In most cases the elderlylive in their own homes. A very small percentage of America’s elderly live in nursinghomes.公共英语试卷第 4 页Samuel Preston, a sociologist at the University of Pennsylvania, studied how the American family is changing. He reported that by the time the average American couple reaches about 40 years of age, their parents are usually still alive. The statistics show the change in lifestyles and responsibilities of aging （老龄化）Americans. The average middle-aged couple can look forward to caring for elderly parents sometime after their own children have grown up. Moreover, because people today live longer after an illness than people did years ago, family members must provide long-term care. These facts also mean that after caregivers provide for their elderly parents, who will eventually die, they will be old and may require care too. When they do, their spouses (配偶) will probably take care of them because they have had fewer children than their parents did.Because Americans are living longer than ever, more social workers have begun to study ways of caregiving to improve the care of the elderly. They have found that all caregivers share a common characteristic: They believe that they are the best people for the job. The social workers have also discovered three basic reasons why the caregivers take on the responsibility of caring for an elderly, dependent relative. Many caregivers believe they had an obligation（职责）to help their relatives. Some think that helping others makes them feel more useful. Others hope that by helping someone now, they will deserve care when they become old and dependent.【】51. Samuel Preston’s study shows that __________.[A] lifestyles and responsibilities of the elderly are not changing[B] most American couples over 40 have no living parents[C] middle-aged Americans have to take care of their children and parents at thesame time[D] elderly people may need care for a long time because they live longer after anillness【】52. Who will most probably take care of the middle-aged Americans when they need care themselves?[A] They themselves. [C] Their children.[B] Their close friends. [D] Their husbands or wives.【】53. All caregivers believe that they can __________.[A] care for their elderly parents better than any other people[B] keep closer to their old parents by this means[C] do much better if they have a job as social workers[D] improve the care of the elderly with the help of the social workers【】54. Which of the following is NOT a reason why people look after their relatives?[A] They feel they are of use to other people.[B] They want to set an example to their children.[C] They think it is their duty to help their relatives.[D] They hope they deserve care when they need it.公共英语试卷第 5 页【】55. What is the main idea of the passage?[A] Most old people live longer today after an illness than people did years ago.[B] Many old people are put into nursing homes by their families, who do notvisit them regularly.[C] Most elderly people are taken care of by their families, who assume theresponsibility for different reasons.[D] Most elderly people are satisfied with the better ways of caregiving that socialworkers have come up with.Passage TwoI once knew a young man, nineteen years of age, who lived with absolute outward (外表的) confidence and self-possession for a number of years before I discovered that he could not read or write. His various methods of trick, which were also skills of self-protection, were so skillful and so desperate (绝望) that neither I nor any of his other adult friends were aware of his entire helplessness in face of written words until we went to dinner one night at a local restaurant—and suddenly discovered that he could not read.Even here, it was not the first time we went out to eat, but something like the second or third, that Peter’s desperation shocked me. The first time, he was clever enough to cover the truth. He studied the menu for a moment, then looked up to the waitress and asked her if he could have “just a coke and a hamburger”. He told me later that he had done the same thing many times before and that he had learned to act as if he were examining the menu: “Then I ask for a coke and a hamburger… Sometimes they give me a hamburger on a plate with salad and potatoes…Then I ask them for a ro ll and make my own hamburger.”As we began to go out to eat more frequently, Peter would ask to go to Howard Johnson’s. I soon discovered the r eason for his choice: The photographs, attached in cellophane (玻璃纸) containers to each of the standard items on the menu, could help him not to struggle with the shape of words at all. Howard Johnson’s, whether intentionally or not, had provided the perfect escape for the endangered pride of an adult who was illiterate (文盲).【】56. When he went to a restaurant, Peter would __________.[A] pretend that he could not read or write[B] pretend to be studying the menu[C] be desperate for help from other people[D] protect himself by playing a musical instrument【】57. The young man was not found to be illiterate until __________.[A] he dined out with his adult friends at Howard Johnson’s[B] he could no longer come up with various ways of deception[C] he had dinner with his friends at a certain local restaurant for the second orthird time公共英语试卷第 6 页[D] he was not careful enough to be aware of his entire helplessness in face ofwritten words【】58. What did the young man usually have at a restaurant?[A] Standard items on the menu. [C] Foods that other people ordered.[B] A hamburger made by himself. [D] A coke and a hamburger.【】59. The word “self-possession” (Para.1) probably means __________.[A] self-confidence [C] self-discipline[B] self-consciousness [D] self-devotion【】60. Why did the young man like to go to Howard Johnson’s?[A] Howard Johnson’s provided a perfect escape when anything dangerousshould happen.[B] The menu at Howard Johnson’s gave a clear introduction of the food itserved.[C] The photographs attached to the main items on the menu helped conceal hisilliteracy.[D] He would feel at ease because eat ers at Howard Johnson’s were all adultnon-readers.Passage ThreeAfter practicing as a surgeon for several years, Dr. Ginoux decided to apply for membership in the American College of Surgeons (美国外科医生学会), a highly selective and distinguished (著名的) professional organization.As part of the application procedure (手续), Dr. Ginoux was asked to prepare a list of all the operations performed in the previous even years. Slowly, as she worked on the long list, she began to feel uncertain. She began to question some of her decisions. Had she used the best technique in that case? Maybe, in this case, she should have given one more test before operating? On the other hand, maybe she should have… Would th e doctors on the selection committee understand that, as the only trained surgeon in the area, she usually could not get advice from others and therefore, had to rely completely on her own judgment? For the first time, Dr. Ginoux felt lonely and isolated.The longer Dr. Ginoux worked on the application forms, the more depressed she became. As hope faded, she wondered if a “country doctor” had a realistic chance of being accepted by the American College of Surgeons.【】61. Dr. Ginoux was working in _______.[A] a large city [C] an area far from any big city[B] the American College of Surgeons [D] a selective organization【】62. It was most probable that Dr. Ginoux was ________.[A] a member in that organization[B] a well-trained surgeon[C] a graduate from American College of Surgeons[D] a distinguished surgeon in America公共英语试卷第7 页【】63. When she was filling the application forms, Dr. Ginoux began to be _______.[A] realistic [B] depressed [C] puzzled [D] decisive 【】64. The application forms must include________.[A] the decision procedure [C] the best technique[B] the college achievements [D] a list of advice and judgments 【】65. When filling the forms, Dr. Ginoux felt depressed because________.[A] she didn’t perf orm enough operations[B] some operations were unsuccessful[C] she didn’t get advice from the selection committee[D] she was doubtful about her previous operationsPassage FourAre some people born clever and others born stupid? Or is intelligence developed by our environment and our experience? Strangely enough, the answer to these questions is yes. To some extent our intelligence is given to us at birth, and no amount of special education can make a genius out of a child born with low intelligence. On the other hand, a child who lives in a boring environment will develop his intelligence less than one who lives in rich and varied surroundings. Thus the limits of a person’s intelligence are fixed at birth, whether or not he reaches those limits will depend on his environment. This view, now held by most experts, can be supported in a number of ways.It is easy to show that intelligence is to some extent something we are born with. The closer the blood relationship between two people is, the closer they are likely to be in intelligence. Thus if we take two unrelated people at random from the population, it is likely that their degree of intelligence will be completely different. If, on the other hand, we take two identical twins, they will very likely be as intelligent as each other. Relations like brothers and sisters, parents and children, usually have similar intelligence, and this clearly suggests that intelligence depend on birth.Imagine now that we take two identical twins and put them in different environments. We might send one, for example, to a university and the other to a factory where the work is boring. We would soon find differences in their intelligence developing, and this indicates that environment as well as birth plays a part. This conclusion is also suggested by the fact that people who live in close contact with each other, but who are not related at all are likely to have similar degree of intelligence.【】66.If a child is born with low intelligence, he can ________.[A] not reach his intelligence in his life[B] go beyond his intelligence limits in rich surroundings[C] still become a genius if he should be given special education[D] become a genius【】67.“If we take two unrelated people at random from the population” (Para. 2 ) means if we ________ .[A] choose two persons with different intelligence公共英语试卷第8 页[B] choose two persons who are relative[C] take out two persons of close relationship[D] pick any two persons【】68.The example of the twins going to a university and to a factory separately shows ________ .[A] the part that birth plays[B] the importance of their positions[C] the role of environment on intelligence[D] the importance of their intelligence【】69.The writer is in favor of the view that man’s intelligence is given to him ________ .[A] neither at birth nor through education [C] through education[B] both at birth and through education [D] at birth【】70.The best title of this passage can be ________ .[A] Effect of Education [C] Intelligence[B] Dependence on Environment [D] SurroundingsDirections: There are 20 blanks in the following passage. For eachblank there are four choices marked [A], [B], [C] and [D]. Youshould choose the ONE that best fits into the passage and write thecorresponding letter in the brackets“【】”.Earthquakes are something that most people fear. There are some places that have 71 orno earthquakes. Most places in the world, 72, have them regularly. Some places, 73 Iran andGuatemala have them frequently. Countries that have a lot of earthquakes are usually quite74.The earthquake that the people most 75 about in the United States was the onehappening in San Francisco in 1906. Over 500 people died 76 it. The strongest one in NorthAmerica was in 1964. It happened in Alaska.Strong earthquakes are not always the ones that kill 77. In 1755, one of the strongestearthquakes ever 78 happened in Portugal. Around 20,000 people died.In 1923, a very powerful earthquake 79 the Tokyo-Yokohama area of Japan. Ahundred and forty thousand people died. Most of them died in fires which 80 the earthquake.One of the 81 earthquakes ever was in China in 1976. It killed 82 people. The mostdestructive （破坏性的）earthquake ever reported was also in China. 400,000 people werekilled or 83 in this quake, which happened in 1556.Earthquakes are 84 which people fear. Floods and tidal waves also cause people to be85, as 86 like typhoons and cyclones（飓风）. Sometimes these things cause lots of deaths. In1970, a cyclone and tidal wave killed over 200,000 in Pakistan.公共英语试卷第9 页These kinds of things make people afraid and they are very dangerous. But theyprobably do not worry people 87 earthquakes do, especially in these modern times. Thereason is 88 we often know they are coming, because we have some 89 . Some day we maybe able to know an earthquake is coming. So far, however, there is no sure way to 90 anearthquake. When one comes, it is a surprise. People cannot prepare for it.【】71. [A] less [B] much [C] few [D] little【】72. [A] therefore [B] however [C] for that reason [D] likewise【】73. [A] so far as [B] as [C] except for [D] like【】74. [A] mysterious [B] portable [C] mountainous [D] movable【】75. [A] talking [B] talks [C] talked [D] talk【】76. [A] in [B] over [C] of [D] for【】77. [A] most [C] most the people[B] the majority [D] the most people【】78. [A] broken out [B] exploded [C] recorded [D] brought about 【】79. [A] hindered [B] imposed [C] happened [D] hit【】80. [A] participated [B] invested [C] followed [D]pursued【】81. [A] maximum [B] worst [C] heaviest [D] mature【】82. [A] a large sum of [C] a large number of[B] a great deal of [D] a large amount of【】83. [A] damaged [B] injured [C] harmed [D] wrecked【】84. [A] not only the acts of nature [C] not only acts of the nature[B] not only the nature of acts [D] not the only acts of nature【】85. [A] feared [B] surprised [C] confused [D] afraid【】86. [A] the bad storm did [C] the storms did badly[B] do the bad storms [D] the bad storms do【】87. [A] as many as [B] as much as [C] so many as [D] as more as 【】88. [A] because [B] why [C] that [D] whether【】89. [A] warnings [B] clues [C] symbols [D] evidences 【】90. [A] advocate [B] proclaim [C] put forward [D] predictSection ADirections:There are 5 sentences in this section. Please translatethem from Chinese into English.91.就是在这间小屋里，他们勤奋地工作着。
离散数学-2006`2007(2)-试卷B参考答案及评分细则
西南科技大学2006——2007学年第2学期《离散数学J》期末考试试卷（B卷）(3 分)图（2）不能一笔画出，（1 分）因为图（1）中奇度数顶点数为4。
（2 分）二、解：图（1）存在哈密尔顿回路，比如：v1-v2-v3-v4-v5-v6-v7-v8-v1。
（3 分）图（2）不存在哈密尔顿回路，（1 分）因为，取V'={v2,v6}，则连通分支数w(G-V')＝3＞|V'|＝2，因而该图不是哈密尔顿图。
(2 分) 三、（4 分）四、解：由握手定理知，图G 中所有顶点度数之和为边数的两倍，（2 分）第1页共7页西南科技大学2006——2007学年第2学期《离散数学J》期末考试试卷（B卷）图G 中所有顶点度数之和为2×3＋3×4＋4×5＝38 （1 分）因此G 中共有19 条边。
（1 分）五、解：最优二元树参考如下图：（4分）W(T)＝1×4＋2×4＋5×3＋3×3＋3×3＋6×2＋7×2＝71 （1 分）六、解：前序遍历：∧∨P∧┐PQ∧∨┐P Q┐R（3分）中序遍历：P∨┐P∧Q∧┐P∨Q∧┐R（3分）后序遍历：P P┐Q∧∨P┐Q∨R┐∧∧（3分）七、解：列公式┐(Q→P)∧P和┐((P∧Q)→P)的真值表如下（真值表共8分，每项2分）：（2 分）第2页共7页西南科技大学2006——2007学年第2学期《离散数学J》期末考试试卷（B卷）八、解：A×B ＝{<a,a>,<a,b>,<a,d>,<c,a>,<c,b>,<c,d>} （4分）r(R)={<a,b>,<b,d>,<a,a>,<b,b>,<d,d>} （a分）s(R)={<a,b>,<b,d>,<b,a>,<d,b>}（a分）t(R)={<a,b>,<b,d>,<a,d>}（2分）九、解：设参加英语学习小组用集合A1表示，参加数学学习小组用集合A2表示。