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1、【题目】AsGilbertWhite，Darwin，andothersobservedlongago，allspeciesappeartohavetheinnatecapacitytoincreasetheirnumbersfromgenerationtogeneration.Thetaskforecologistsistountangletheenvironmentaandbiologicalfactorsthatholdthisintrinsiccapacityforpopulationgrowthincheckoverthelongrun.Thegreatvarietyofdynamicbehaviorsexhibitedbydifferentpopulationmakesthistaskmoredifficult：sompopulationsremainroughlyconstantfromyeartoyear;othersexhibitregularcyclesofabundanceandscarcity;stillothersvarywildly，withoutbreaksandcrashesthatareinsomecasesplainlycorrelatedwiththeweather，andinothercasesnot.Toimposesomeorderonthiskaleidoscopeofpatterns，oneschoolofthoughtproposesdividingpopulationsintotwogroups.Theseecologistspositthattherelativelysteadypopulationshavedensity-dependentgrowthparameters;thatis，ratesofbirth，death，andmigrationwhichdependstronglyonpopulationdensity.Thehighlyvaryingpopulationshavedensity-independentgrowthparameters，withvitalratesbuffetedbyenvironmentalevents;theseratesfluctuateinawaythatiswhollyindependentofpopulationdensity.Thisdichotomyhasitsuses，butitcancauseproblemsiftakentooliterally.Foronething，nopopulationcanbedrivenentirelybydensity-independentfactorsallthetime.Nomatterhowseverelyorunpredictablybirth，death，andmigrationratesmaybefluctuatingaroundtheirlong-termaverages，iftherewerenodensity-dependenteffects，thepopulationwould，inthelongrun，eitherincreaseordecreasewithoutbound(barringamiraclebywhichgainsandlossescanceledexactly)。Putanotherway，itmaybethatonaverage99percentofalldeathsinapopulationarisefromdensity-independentcauses，andonlyonepercentfromfactorsvaryingwithdensity.Thefactorsmakinguptheonepercentmayseemunimportant，andtheircausemaybecorrespondinglyhardtodetermine.Yet，whetherrecognizedornot，theywillusuallydeterminethelong-termaveragepopulationdensity.Inordertounderstandthenatureoftheecologist’sinvestigation，wemaythinkofthedensity-dependenteffectsongrowthparametersasthesignalecologistsaretryingtoisolateandinterpret，onethattendstomakethepopulationincreasefromrelativelylowvaluesordecreasefromrelativelyhighones，whilethedensity-independenteffectsacttoproducenoiseinthepopulationdynamics.Forpopulationsthatremainrelativelyconstant，orthatoscillatearoundrepeatedcycles，thesignalcanbefairlyeasilycharacterizedanditseffectsdescribed，eventhoughthecausativebiologicalmechanismmayremainunknown.Forirregularlyfluctuatingpopulations，wearelikelytohavetoofewobservationstohaveanyhopeofextractingthesignalfromtheoverwhelmingnoise.Butitnowseemsclearthatallpopulationsareregulatedbyamixtureofdensity-dependentanddensity-independenteffectsinvaryingproportions.
1.Theauthorofthetextisprimarilyconcernedwith
[A]Discussingtwocategoriesoffactorsthatcontrolpopulationgrowthandassessingtheirrelativeimportance.
[B]Describinghowgrowthratesinnaturalpopulationsfluctuateovertimeandexplainingwhythesechangesoccur.
[C]Proposingahypothesisconcerningpopulationsizeandsuggestingwaystotestit.
[D]Posingafundamentalquestionaboutenvironmentalfactorsinpopulationgrowthandpresentingsomecurrentlyacceptedanswer.
2.Itcanbeinferredfromthetextthattheauthorconsidersthedichotomydiscussedtobe
[A]Applicableonlytoerraticallyfluctuatingpopulations.
[B]instrumental，butonlyifitslimitationsarerecognized.
[C]Dangerouslymisleadinginmostcircumstances.
[D]Acompleteandsufficientwaytoaccountforobservedphenomena.
3.tothetext，allofthefollowingbehaviorshavebeenexhibitedbydifferentpopulationsEXCEPT
[A]Roughlyconstantpopulationlevelsfromyeartoyear.
[B]Regularcyclesofincreasesanddecreasesinnumbers.
[C]Erraticincreasesinnumberscorrelatedwiththeweather.
[D]Uncheckedincreasesinnumbersovermanygenerations.
4.Thediscussionconcerningpopulationinthethirdparagraphservesprimarilyto
[A]Demonstratethedifficultiesecologistsfaceinstudyingdensity-dependentfactorslimitingpopulationgrowth.
[B]Advocatemorerigorousstudyofdensity-dependentfactorsinpopulationgrowth.
[C]Provethatthedeathratesofanypopulationareneverentirelydensity-independent.
[D]underlinetheimportanceofevensmalldensity-dependentfactorsinregulatinglong-termpopulationdensities.
5.Inthetext，theauthordoesallofthefollowingEXCEPT
[A]Citetheviewsofotherbiologists.
[B]Defineabasicproblemthatthetextaddresses.
[C]Presentconceptualcategoriesusedbyotherbiologists.
[D]Describetheresultsofaparticularstudy.
答案：
ABDDD
解析：
暂无解析
1、【题目】California is a land of variety and contrast. Almost every type of physical land feature ， sort of arctic ice fields and tropical jungles can be found within its borders. Sharply contrasting types of land often lie very close to one another. People living in Bakersfield ， for instance，can visit the Pacific Ocean and the coastal plain ， the fertile San Joaquin Valley ， the arid Mojave Desert ， and the high Sierra Nevada， all within a radius of about 100 miles. In other areas it is possible to go snow skiing in the morning and surfing in the evening of the same day ， without having to travel long distance. Contrast abounds in California. The highest point in the United States (outside Alaska ) is in California ， and so is the lowest point (including Alaska )。 Mount Whitney ， 14，494 feet above sea level，is separated from Death Valley ， 282 feet below sea level，by a distance of only 100 miles. The two areas have a difference in altitude of almost three miles. California has deep ， clear mountain lakes like Lake Tahoe ， the deepest in the country， but it also has shallow， salty desert lakes. It has Lake Tulainyo ， 12，020 feet above sea level， and the lowest lake in the country ， the Salton Sea， 236 feet below sea level. Some of its lakes ， like Owens Lake in Death Valley ， are not lakes at all： they are dried up lake beds. In addition to mountains ，lakes， valleys，deserts， and plateaus，California has its Pacific coastline， stretching longer than the coastlines of Oregon and Washington combined.
1. Which of the following is the lowest point in the United States?
A. Lake Tulainyo B. Mojave desert C. Death Valley D. The Salton Sea
2. Where is the highest point in the United States located ?
A. Lake Tahoe.
B. Sierra Nevada. C. Mount Whitney.
D. Alaska.
3. How far away is Death Valley from Mount Whitney?
A. About 3 miles.
D. 14，494 feet.
4. Which of the following is NOT mentioned in the passage as being within a radius ofabout 100 miles of Bakersfield ?
A. The Pacific Ocean.
B. San Joaquin Valley.
C. Mojave Desert.
D. Oregon andWashington.
5. Which statement best demonstrates that California is a land of variety and contrast ?
A. The highest lake in California is Lake Tulainyo.
B. It is possible to go surfing and snow skiing in some parts of California without having totravel long distance.
C. Sierra Nevada， San Joaquin Valley， Mojave Desert and the Pacific Ocean all lie withina radius of about 100 miles.
D. Owens Lake ， in Death Valley ， is not really a lake at all.
答案：
CDBDC
解析：
1.C)这是一道细节题。根据第三段所给的海拔高度，可知美国最低点在deathvalley.
2.D)此题很容易误选为C，这是因为第三段提到MountWhitney的海拔高度;但是要注意此段第二句提到美国最高点时在括号中补充说明这个最高点是在Alaska以外的。这就说明美国的海拔最高点不是MountWhitney，而是位于Alaska.
3.B)这是一道细节题。根据第三段可找出答案。
4.D)根据第二段可知答案。
5.C)文中说加利福尼亚是一个地貌多样，富于变化的地方，而选项C是一个最突出的例子。
1、【题目】汉译英：朋友之间，情趣相投、脾气对味则合、则交，反之，则离、则绝。朋友之间再熟悉、 再亲密，也不能随便过头、 不恭不敬，这样，默契和平衡将被打破， 友好关系将不复存在。 每个人都希望拥有自己的一片私密空间，朋友之间过于随便，就容易侵入这片禁区，从而引起冲突，造成隔阂。待友不敬，有时或许只是一件小事，却可能已埋下了破坏性的种子。 维持朋友亲密关系的最好办法是往来有节，互不干涉。
答案：
For the relationship between friends, similar habits and tempers help to make it closer; on the other hand, opposite ones leave distance from each other. No matter how familiar and intimate the friends are, the relationship should be treated carefully and respect should be treasured for friends. Otherwise, the partnership and balance would be broken; as a result, a good relationship would no longer exist. Everyone has a desire for his own personal space, which could be easily invaded if the attitude between friends is too free. Then conflicts appear, causing barriers. Although it seems a small case of not respecting friends, harmful seeds may be sowed to ruin the relationship. In a word, the best way to keep positive friendship is associating with temperate manners and without too much interference.
解析：
暂无解析
1、【题目】Writing:
The present world witnesses invention and use of various robots, some of whom even can play games with human and defeat the latter. Such being the case, many are worried that robots will surpass human beings in intelligence and enslave them, while others believe that the human mind will always be superior to machines because machines are only tools of human minds. What is your opinion? Write an essay of about 400 words.
In the first part of your essay you should state clearly your main argument, and in the second part you should support your argument with appropriate details. In the last part you should bring what you have written to a natural conclusion or make a summary.
You should supply an appropriate title for your essay.
Marks will be awarded for content, organization, grammar and appropriateness. Failure to follow the above instructions may result in a loss of marks.
答案：
Sample
Robots: Superior to Mankind?
Nowadays, there is a public controversy concerning the issue of whether mankind will always be superior to machines. Some people argue that since machines are only tools of humankind, they will always be inferior to us, while others hold that machines, especially computers with artificial intelligence, will ultimately surpass us in every aspect of intellectual life. In my opinion, we must carefully consider what we mean by the word "superior" before we can answer the question.
If "superior" is meant to mean the knowledge, speed, and accuracy in doing certain technical jobs, the machines of our day will surpass human beings in most areas, given their efficiency and endurance. For instance, a specially designed computer program can solve a complex equation in moments that would take a person working with pencil and paper several days to solve. What's more, computers can keep on working for days even months without any need for rest and no diminishment in accuracy, while people require rest and recreation. Computers can store and instantly retrieve vast amounts of information in its memory while people may often forget the most important thing. Some machines, such as a hoist, are capable of accomplishing feats of strength that no human individual could ever dream of. In this sense, machines are like miracles that we have created to help us in our adaptation and reconstruction of the material world.
However, if the word "superior" is defined on the basis of creative thinking and emotional sensitivity, machines are inferior to mankind, at least at the present time. For example, we recognize familiar faces within a second or less, but a computer must follow a series of complex procedures in order to recognize even a face that has been presented to it thousands of times. Besides, while computers have been developed that are capable of producing works of art, such as pictures and musical compositions, such computer-generated works are devoid of any their creator's feelings since computers are non-sensate. Since machines, especially computers, are developing at a tremendous rate today, we can't rule out the possibility that in the future the machines can surpass humans in almost every field. But up to now, it is still incomparable to the power of human thinking in many aspects and is still under human control. Human beings should make good use of machines and remember that their development is meant to benefit mankind.
For the reasons mentioned above, I hold that humans and machines are not comparable unless we define our specific usage of the word "superior". Machines have the advantage in some areas while the human being holds the edge in the realm of creative thinking. We should utilize machines to support and enhance our thinking about the social life and avoid their improper use and application.
解析：
暂无解析
1、【题目】Writing:
A statement goes that "both the development of technological tools and the uses to which humanity has put them have created modern civilizations in which loneliness is ever increasing." To what degree do you agree with this statement? Write an essay of about 400 words.
In the first part of your essay you should state clearly your main argument, and in the second part you should support your argument with appropriate details. In the last part you should bring what you have written to a natural conclusion or make a summary.
You should supply an appropriate title for your essay.
Marks will be awarded for content, organization, grammar and appropriateness. Failure to follow the above instructions may result in a loss of marks.
答案：
Sample
For a Balance between Technology and Life
Technology, broadly defined as the use of tools, has a long history. Ever since Erg the caveman first conked an animal with a rock, people have been using technology. For thousands of years, the use of tools allowed people to move ever closer together. Because fields could be cultivated and the technology to store food existed, people would live in cities rather than in small nomadic tribes. However, in the past centuries, both the development of technological tools and the uses to which humanity has put them have created modern civilizations in which loneliness is ever increasing.
First, the Industrial Revolution deprived people to a large extent of the pleasure of communication during work. It is true that the revolution introduced and spread technologies that mechanized many tasks and saved people much labor, but as a result of the drive toward more efficient production and distribution, people began to act as cogs in the technological machine. Clothing was no longer produced by groups of women sewing and gossiping together, but by down-trodden automation's operating machinery in grim factories.
Secondly, the new technology of today, computers and the Internet, pushed people further to the abyss of loneliness. Truly, they have made work ever more efficient and knit the world together in a web of information and phone lines. The world has been made into one in which Erg need not check in to his office; he can just dial in from home. He won't need to go to a bar to pick up women because there are all those chat rooms. Hungry? Erg orders his groceries from an online delivery service. Bored? Download a new game. And yet……However, many people, myself included, are a little queasy about that vision. Erg may be doing work, but is it real work? Are his online friends real friends? Can he really enjoy this solitude?
Actually, since the Industrial Revolution, we have been haunted by the prospect that we are turning into our machines: efficient, productive, and soulless. The newest technologies, we fear, are making us flat as our screens, turning us into streams of bits of interchangeable data. We may know a lot of people, but we have few real friends. We have a lot of things to do, but no reason to do them. In short, the new technology emphasizes a spiritual crisis that has been building for quite some time.
While I am certainly not a Luddite, I do believe we need to look for a bit more balance between technology and life. We have to tear ourselves away from the fatal distractions and go out into the world. Technology has given us long lives and endless supplies of information. Now we need to apply that information, use the time we're not spending conking our dinner with a club, and find our reasons for living.
解析：
暂无解析
1、【题目】汉译英：生活就像一杯红酒， 热爱生活的人会从其中品出无穷无尽的美妙。将它握在手中仔细观察， 它的暗红色中有血的感觉， 那正是生命的痕迹。抿一口留在口中回味， 它的甘甜中有一丝苦涩， 如人生一般复杂迷离。喝一口下肚，余香沁人心脾，让人终身受益。红酒越陈越美味，生活越丰富越美好。当人生走向晚年，就如一瓶待开封的好酒，其色彩是沉静的，味道中充满慷慨与智慧。
答案：
Life is like a cup of wine; people who love it discover inexhaustible wonders from it. Hold in the hand and gaze at it, the dark red color is reminiscent of the blood, which is the impress of life. Take a sip of it and appreciate the taste, the bittersweet flavor is exactly the same with life, which is complicated and blurred. Once the sip is swallowed, the lingering fragrance pleases the heart and refreshes the mind, leaving a person lifelong benefit. There was a remarkable resemblance between life and wine: the taste becomes more delicious as the wine mellows, just as life gets better as it becomes more abundant. When life comes to twilight years, it looks calm and tastes full of wisdom and generosity, just like a bottle of wine to be savored.
解析：
暂无解析
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