专八阅读理解练习题
专八英语阅读
专八英语阅读.英语专业八级考试TEM-8阅读理解练习册（1）(英语专业2012级)UNIT 1Text AEvery minute of every day, what ecologist生态学家James Carlton calls a global “conveyor belt”, redistributes ocean organisms生物.It’s planetwide biological disruption生物的破坏that scientists have barely begun to understand.Dr. Carlton —an oceanographer at Williams College in Williamstown,Mass.—explains that, at any given moment, “There are several thousand marine species traveling… i n the ballast water of ships.” These creatures move from coastal waters where they fit into the local web of life to places where some of them could tear that web apart. This is the larger dimension of the infamous 无耻的，邪恶的invasion of fish-destroying, pipe-clogging zebra mussels有斑马纹的贻贝.Such voracious贪婪的invaders at least make their presence known. What concerns Carlton and his fellow marine ecologists is the lack of knowledge about the hundreds of alien invaders that quietly enter coastal waters around the world every day. Many of them probably just die out. Some benignly亲切地，仁慈地—or even beneficially —join the local scene. But some will make trouble.In one sense, this is an old story. Organisms have ridden ships for centuries. They have clung to hulls and come along withcargo. What’s new is the scale and speed of the migrations made possible by the massive volume of ship-ballast water压载水—taken in to provide ship stability—continuously moving around the world…Ships load up with ballast water and its inhabitants in coastal waters of one port and dump the ballast in another port that may be thousands of kilometers away. A single load can run to hundreds of gallons. Some larger ships take on as much as 40 million gallons. The creatures that come along tend to be in their larva free-floating stage. When discharged排出in alien waters they can mature into crabs, jellyfish水母, slugs鼻涕虫，蛞蝓, and many other forms.Since the problem involves coastal species, simply banning ballast dumps in coastal waters would, in theory, solve it. Coastal organisms in ballast water that is flushed into midocean would not survive. Such a ban has worked for North American Inland Waterway. But it would be hard to enforce it worldwide. Heating ballast water or straining it should also halt the species spread. But before any such worldwide regulations were imposed, scientists would need a clearer view of what is going on.The continuous shuffling洗牌of marine organisms has changed the biology of the sea on a global scale. It can have devastating effects as in the case of the American comb jellyfish that recently invaded the Black Sea. It has destroyed that sea’s anchovy鳀鱼fishery by eating anchovy eggs. It may soon spread to western and northern European waters.The maritime nations that created the biological “conveyor belt” should support a coordinated international effort to find out what is going on and what should be done about it. (456 words)1.According to Dr. Carlton, ocean organism’s are_______.A.being moved to new environmentsB.destroying the planetC.succumbing to the zebra musselD.developing alien characteristics2.Oceanographers海洋学家are concerned because_________.A.their knowledge of this phenomenon is limitedB.they believe the oceans are dyingC.they fear an invasion from outer-spaceD.they have identified thousands of alien webs3.According to marine ecologists, transplanted marinespecies____________.A.may upset the ecosystems of coastal watersB.are all compatible with one anotherC.can only survive in their home watersD.sometimes disrupt shipping lanes4.The identified cause of the problem is_______.A.the rapidity with which larvae matureB. a common practice of the shipping industryC. a centuries old speciesD.the world wide movement of ocean currents5.The article suggests that a solution to the problem__________.A.is unlikely to be identifiedB.must precede further researchC.is hypothetically假设地，假想地easyD.will limit global shippingText BNew ‘Endangered’ List Targets Many US RiversIt is hard to think of a major natural resource or pollutionissue in North America today that does not affect rivers.Farm chemical runoff残渣, industrial waste, urban storm sewers, sewage treatment, mining, logging, grazing放牧,military bases, residential and business development, hydropower水力发电,loss of wetlands. The list goes on.Legislation like the Clean Water Act and Wild and Scenic Rivers Act have provided some protection, but threats continue.The Environmental Protection Agency (EPA) reported yesterday that an assessment of 642,000 miles of rivers and streams showed 34 percent in less than good condition. In a major study of the Clean Water Act, the Natural Resources Defense Council last fall reported that poison runoff impairs损害more than 125,000 miles of rivers.More recently, the NRDC and Izaak Walton League warned that pollution and loss of wetlands—made worse by last year’s flooding—is degrading恶化the Mississippi River ecosystem.On Tuesday, the conservation group保护组织American Rivers issued its annual list of 10 “endangered” and 20 “threatened” rivers in 32 states, the District of Colombia, and Canada.At the top of the list is the Clarks Fork of the Yellowstone River, whereCanadian mining firms plan to build a 74-acre英亩reservoir 水库，蓄水池as part of a gold mine less than three miles from Yellowstone National Park. The reservoir would hold the runoff from the sulfuric acid 硫酸used to extract gold from crushed rock.“In the event this tailings pond failed, the impact to th e greater Yellowstone ecosystem would be cataclysmic大变动的，灾难性的and the damage irreversible不可逆转的.” Sen. Max Baucus of Montana, chairman of the Environment and PublicWorks Committee, wrote to Noranda Minerals Inc., an owner of the “ New World Mine”.Last fall, an EPA official expressed concern about the mine and its potential impact, especially the plastic-lined storage reservoir. “ I am unaware of any studies evaluating how a tailings pond尾矿池，残渣池could be maintained to ensure its structural integrity forev er,” said Stephen Hoffman, chief of the EPA’s Mining Waste Section. “It is my opinion that underwater disposal of tailings at New World may present a potentially significant threat to human health and the environment.”The results of an environmental-impact statement, now being drafted by the Forest Service and Montana Department of State Lands, could determine the mine’s future…In its recent proposal to reauthorize the Clean Water Act, the Clinton administration noted “dramatically improved water quality since 1972,” when the act was passed. Bu t it also reported that 30 percent of riverscontinue to be degraded, mainly by silt泥沙and nutrients from farm and urban runoff, combined sewer overflows, and municipal sewage城市污水. Bottom sediments沉积物are contaminated污染in more than 1,000 waterways, the administration reported in releasing its proposal in January. Between 60 and 80 percent of riparian corridors (riverbank lands) have been degraded.As with endangered species and their habitats in forests and deserts, the complexity of ecosystems is seen in rivers and the effects of development----beyond the obvious threats of industrial pollution, municipal waste, and in-stream diversions改道to slake消除the thirst of new communities in dry regions like the Southwes t…While there are many political hurdles障碍ahead, reauthorization of the Clean Water Act this year holds promise for US rivers. Rep. Norm Mineta of California, who chairs the House Committee overseeing the bill, calls it “probably the most important env ironmental legislation this Congress will enact.” (553 words)6.According to the passage, the Clean Water Act______.A.has been ineffectiveB.will definitely be renewedC.has never been evaluatedD.was enacted some 30 years ago7.“Endangered” rivers are _________.A.catalogued annuallyB.less polluted than “threatened rivers”C.caused by floodingD.adjacent to large cities8.The “cataclysmic” event referred to in paragraph eight would be__________.A. fortuitous偶然的，意外的B. adventitious外加的，偶然的C. catastrophicD. precarious不稳定的，危险的9. The owners of the New World Mine appear to be______.A. ecologically aware of the impact of miningB. determined to construct a safe tailings pondC. indifferent to the concerns voiced by the EPAD. willing to relocate operations10. The passage conveys the impression that_______.A. Canadians are disinterested in natural resourcesB. private and public environmental groups aboundC. river banks are erodingD. the majority of US rivers are in poor conditionText CA classic series of experiments to determine the effects ofoverpopulation on communities of rats was reported in February of 1962 in an article in Scientific American. The experiments were conducted by a psychologist, John B. Calhoun and his associates. In each of these experiments, an equal number of male and female adult rats were placed in an enclosure and given an adequate supply of food, water, and other necessities. The rat populations were allowed to increase. Calhoun knew from experience approximately how many rats could live in the enclosures without experiencing stress due to overcrowding. He allowed the population to increase to approximately twice this number. Then he stabilized the population by removing offspring that were not dependent on their mothers. He and his associates then carefully observed and recorded behavior in these overpopulated communities. At the end of their experiments, Calhoun and his associates were able to conclude that overcrowding causes a breakdown in the normal social relationships among rats, a kind of social disease. The rats in the experiments did not follow the same patterns of behavior as rats would in a community without overcrowding.The females in the rat population were the most seriously affected by the high population density: They showed deviant异常的maternal behavior; they did not behave as mother rats normally do. In fact, many of the pups幼兽，幼崽, as rat babies are called, died as a result of poor maternal care. For example,mothers sometimes abandoned their pups,and, without their mothers' care, the pups died. Under normal conditions, a mother rat would not leave her pups alone to die. However, the experiments verified that in overpopulated communities, mother rats do not behave normally. Their behavior may be considered pathologically 病理上，病理学地diseased.The dominant males in the rat population were the least affected by overpopulation. Each of these strong males claimed an area of the enclosure as his own. Therefore, these individuals did not experience the overcrowding in the same way as the other rats did. The fact that the dominant males had adequate space in which to live may explain why they were not as seriously affected by overpopulation as the other rats. However, dominant males did behave pathologically at times. Their antisocial behavior consisted of attacks on weaker male,female, and immature rats. This deviant behavior showed that even though the dominant males had enough living space, they too were affected by the general overcrowding in the enclosure.Non-dominant males in the experimental rat communities also exhibited deviant social behavior. Some withdrew completely; they moved very little and ate and drank at times when the other rats were sleeping in order to avoid contact with them. Other non-dominant males were hyperactive; they were much more active than is normal, chasing other rats and fighting each other. This segment of the rat population, likeall the other parts, was affected by the overpopulation.The behavior of the non-dominant males and of the other components of the rat population has parallels in humanbehavior. People in densely populated areas exhibit deviant behavior similar to that of the rats in Calhoun's experiments. In large urban areas such as New York City, London, Mexican City, and Cairo, there are abandoned children. There are cruel, powerful individuals, both men and women. There are also people who withdraw and people who become hyperactive. The quantity of other forms of social pathology such as murder, rape, and robbery also frequently occur in densely populated human communities. Is the principal cause of these disorders overpopulation? Calhoun’s experiments suggest that it might be. In any case, social scientists and city planners have been influenced by the results of this series of experiments.11. Paragraph l is organized according to__________.A. reasonsB. descriptionC. examplesD. definition12．Calhoun stabilized the rat population_________.A. when it was double the number that could live in the enclosure without stressB. by removing young ratsC. at a constant number of adult rats in the enclosureD. all of the above are correct13.W hich of the following inferences CANNOT be made from theinformation inPara. 1?A. Calhoun's experiment is still considered important today.B. Overpopulation causes pathological behavior in rat populations.C. Stress does not occur in rat communities unless there is overcrowding.D. Calhoun had experimented with rats before.14. Which of the following behavior didn’t happen in this experiment?A. All the male rats exhibited pathological behavior.B. Mother rats abandoned their pups.C. Female rats showed deviant maternal behavior.D. Mother rats left their rat babies alone.15. The main idea of the paragraph three is that __________.A. dominant males had adequate living spaceB. dominant males were not as seriously affected by overcrowding as the otherratsC. dominant males attacked weaker ratsD. the strongest males are always able to adapt to bad conditionsText DThe first mention of slavery in the statutes法令，法规of the English colonies of North America does not occur until after 1660—some forty years after the importation of the first Black people. Lest we think that existed in fact before it did in law, Oscar and Mary Handlin assure us, that the status of B lack people down to the 1660’s was that of servants. A critique批判of the Handlins’ interpretation of why legal slavery did not appear until the 1660’s suggests that assumptions about the relation between slavery and racial prejudice should be reexamined, and that explanation for the different treatment of Black slaves in North and South America should be expanded.The Handlins explain the appearance of legal slavery byarguing that, during the 1660’s, the position of white servants was improving relative to that of black servants. Thus, the Handlins contend, Black and White servants, heretofore treated alike, each attained a different status. There are, however, important objections to this argument. First, the Handlins cannot adequately demonstrate that t he Whit e servant’s position was improving, during and after the 1660’s; several acts of the Maryland and Virginia legislatures indicate otherwise. Another flaw in the Handlins’ interpretation is their assumption that prior to the establishment of legal slavery there was no discrimination against Black people. It is true that before the 1660’s Black people were rarely called slaves. But this should not overshadow evidence from the 1630’s on that points to racial discrimination without using the term slavery. Such discrimination sometimes stopped short of lifetime servitude or inherited status—the two attributes of true slavery—yet in other cases it included both. The Handlins’ argument excludes the real possibility that Black people in the English colonies were never treated as the equals of White people.The possibility has important ramifications后果，影响.If from the outset Black people were discriminated against, then legal slavery should be viewed as a reflection and an extension of racial prejudice rather than, as many historians including the Handlins have argued, the cause of prejudice. In addition, the existence of discrimination before the advent of legal slavery offers a further explanation for the harsher treatment of Black slaves in North than in South America. Freyre and Tannenbaum have rightly argued that the lack of certain traditions in North America—such as a Roman conception of slavery and a Roman Catholic emphasis on equality—explains why the treatment of Blackslaves was more severe there than in the Spanish and Portuguese colonies of South America. But this cannot be the whole explanation since it is merely negative, based only on a lack of something. A more compelling令人信服的explanation is that the early and sometimes extreme racial discrimination in the English colonies helped determine the particular nature of the slavery that followed. (462 words)16. Which of the following is the most logical inference to be drawn from the passage about the effects of “several acts of the Maryland and Virginia legisla tures” (Para.2) passed during and after the 1660’s?A. The acts negatively affected the pre-1660’s position of Black as wellas of White servants.B. The acts had the effect of impairing rather than improving theposition of White servants relative to what it had been before the 1660’s.C. The acts had a different effect on the position of white servants thandid many of the acts passed during this time by the legislatures of other colonies.D. The acts, at the very least, caused the position of White servants toremain no better than it had been before the 1660’s.17. With which of the following statements regarding the status ofBlack people in the English colonies of North America before the 1660’s would the author be LEAST likely to agree?A. Although black people were not legally considered to beslaves,they were often called slaves.B. Although subject to some discrimination, black people had a higherlegal status than they did after the 1660’s.C. Although sometimes subject to lifetime servitude, black peoplewere not legally considered to be slaves.D. Although often not treated the same as White people, black people,like many white people, possessed the legal status of servants.18. According to the passage, the Handlins have argued which of thefollowing about the relationship between racial prejudice and the institution of legal slavery in the English colonies of North America?A. Racial prejudice and the institution of slavery arose simultaneously.B. Racial prejudice most often the form of the imposition of inheritedstatus, one of the attributes of slavery.C. The source of racial prejudice was the institution of slavery.D. Because of the influence of the Roman Catholic Church, racialprejudice sometimes did not result in slavery.19. The passage suggests that the existence of a Roman conception ofslavery in Spanish and Portuguese colonies had the effect of _________.A. extending rather than causing racial prejudice in these coloniesB. hastening the legalization of slavery in these colonies.C. mitigating some of the conditions of slavery for black people in these coloniesD. delaying the introduction of slavery into the English colonies20. The author considers the explanation put forward by Freyre andTannenbaum for the treatment accorded B lack slaves in the English colonies of North America to be _____________.A. ambitious but misguidedB. valid有根据的but limitedC. popular but suspectD. anachronistic过时的，时代错误的and controversialUNIT 2Text AThe sea lay like an unbroken mirror all around the pine-girt, lonely shores of Orr’s Island. Tall, kingly spruce s wore their regal 王室的crowns of cones high in air, sparkling with diamonds of clear exuded gum流出的树胶; vast old hemlocks铁杉of primeval 原始的growth stood darkling in their forest shadows, their branches hung with long hoary moss久远的青苔;while feathery larches羽毛般的落叶松,turned to brilliant gold by autumn frosts, lighted up the darker shadows of the evergreens. It was one of those hazy朦胧的, calm, dissolving days of Indian summer, when everything is so quiet that the fainest kiss of the wave on the beach can be heard, and white clouds seem to faint into the blue of the sky, and soft swathing一长条bands of violet vapor make all earth look dreamy,and give to the sharp, clear-cut outlines of the northern landscape all those mysteries of light and shade which impart such tenderness to Italian scenery.The funeral was over,--- the tread鞋底的花纹/ 踏of many feet, bearing the heavy burden of two broken lives, had been to the lonely graveyard, and had come back again,--- each footstep lighter and more unconstrained不受拘束的as each one went his way from the great old tragedy of Death to the common cheerful of Life.The solemn black clock stood swaying with its eternal “tick-tock, tick-tock,” in the kitchen of the brown house on Orr’s Island. There was there that sense of a stillness that can be felt,---such as settles down on a dwelling住处when any of its inmates have passed through its doors for the last time, to go whence they shall not return. The best room was shut up and darkened, with only so much light as could fall through a little heart-shaped hole in the window-shutter,---for except on solemn visits, or prayer-meetings or weddings, or funerals, that room formed no part of the daily family scenery.The kitchen was clean and ample, hearth灶台, and oven on one side, and rows of old-fashioned splint-bottomed chairs against the wall. A table scoured to snowy whiteness, and a little work-stand whereon lay the Bible, the Missionary Herald, and the Weekly Christian Mirror, before named, formed the principal furniture. One feature, however, must not be forgotten, ---a great sea-chest水手用的储物箱,which had been the companion of Zephaniah through all the countries of the earth. Old, and battered破旧的，磨损的, and unsightly难看的it looked, yet report said that there was good store within which men for the most part respect more than anything else; and, indeed it proved oftenwhen a deed of grace was to be done--- when a woman was suddenly made a widow in a coast gale大风，狂风, or a fishing-smack小渔船was run down in the fogs off the banks, leaving in some neighboring cottage a family of orphans,---in all such cases, the opening of this sea-chest was an event of good omen 预兆to the bereaved丧亲者;for Zephaniah had a large heart and a large hand, and was apt有…的倾向to take it out full of silver dollars when once it went in. So the ark of the covenant约柜could not have been looked on with more reverence崇敬than the neighbours usually showed to Captain Pennel’s sea-chest.。
2023专八英语中级阅读习题及解析
2023专八英语中级阅读习题及解析2023专八英语中级阅读习题及解析1. The best title for this passage is ___________[A]The Age of Reason[C]The Value of Reason[D]Stirring People’s Minds2. According to the author, it is always advisable to ___________[A]have opinions which cannot be refuted.[B]adopt the point of view to which one feels the most inclination.[C]be acquainted with the arguments favoring the point of view with which one disagrees,3. According to the author, in a great period such as the Renaissance we may expect to find ___________[A]acceptance of truth[B]controversy over principles[C]inordinate enthusiasm[D]a dread of heterodox speculation4. According to the author, the person who holds orthodox beliefs without examination may be described in all of the following ways EXCEPT as ___________[A]enslaved by tradition[B]less than fully rational[C]determinded on controversy[D]having a closed mind5. It can be inferred from the passage that the author would be most likely to agree with which of the following statements ___________[A]A truly great thinker makes no mistakes.[B]Periods of intellectual achievement are periods of unorthodox reflection,[C]The refutation of accepted ideas can best be provided by one’s own teachers.[D]excessive controversy prevents clear thinking,Vocabulary1. stature 高度，境界，状况2. heterodox 不符合公认的标准的，异端的，异教的3. tacit 心照不宣4. refute 反驳5. adversary 对立面，对手，敌人6. plausible 擅长花言巧语的/辞令的，似乎有理的/有可能的7. doctrine 教义，学说8. profess 表示，明言，成认，自称，信奉难句译注1. True gains more even by the errors of one who with due study and preparation, thinks for himself, then by the true opinions of those who only hold them because they do not suffer themselves to think.[参考译文] 真理甚至从一个经过恰当研究和准备进展独立考虑的人的错误中获得更多的东西，而从那些只是因为不予考虑却持有正确的观点中获得的少(一种经过恰当的研究和准备进展独立考虑的人犯的错误，另一种人是不予考虑的却持有正确的观点，真理从前者错误中获得的东西比从后者的正确观点中获得的要多)。
专业英语八级(阅读)练习试卷8(题后含答案及解析)
专业英语八级（阅读）练习试卷8(题后含答案及解析) 题型有： 2. READING COMPREHENSIONPART II READING COMPREHENSION (30 MIN)Directions: In this section there are four reading passages followed by a total of 20 multiple-choice questions. For each of them there are four choices marked A, B, C and D. You should decide on the best choice.Britain’s east midlands were once the picture of English countryside, alive with flocks, shepherds, skylarks and buttercups—the stuff of fairytales. In 1941 George Marsh left school at the age of 14 to work as a herdsman in Nottinghamshire, the East Midlands countryside his parents and grandparents farmed. He recalls skylarks nesting in cereal fields, which when accidentally disturbed would fly singing into the sky. But in his lifetime, Marsh has seen the color and diversity of his native land fade. Farmers used to grow about a ton of wheat per acre; now they grow four tons. Pesticides have killed off the insects upon which skylarks fed, and year-round harvesting has driven the birds from their winter nests. Skylarks are now rare. “Farmers kill anything that affects production,”says Marsh. “Agriculture is too efficient. “Anecdotal evidence of a looming crisis in biodiversity is now being reinforced by science. In their comprehensive surveys of plants, butterflies and birds over the past 20 to 40 years in Britain, ecologists Jeremy Thomas and Carly Stevens found significant population declines in a third of all native species. Butterflies are the furthest along—71 percent of Britain’s 58 species are shrinking in number, and some, like the large blue and tortoiseshell, are already extinct. In Britain’s grasslands, a key habitat, 20 percent of all animal, plant and insect species are on the path to extinction. There’s hardly a corner of the country’s ecology that isn’t affected by this downward spiral. The problem would be bad enough if it were merely local, but it’s not : because Britain’s temperate ecology is similar to that in so many other parts of the world, it’s the best microcosm scientists have been able to study in detail. Scientists have sounded alarms about species’extinction in the past, but always specific to a particular animal or place—whales in the 1980s or the Amazonian rain forests in the 1990s. This time, though, the implications are much wider. The Amazon is a “biodiversity hot spot”with a unique ecology. But in Britain, “the main drivers of change are the same processes responsible for species’declines worldwide, “says Thomas. The findings, published in the journal Science, provide the first clear evidence that the world is in the throes of a massive extinction. Thomas and Stevens argue that we are facing a loss of 65 to 95 percent of the world’s species, on the scale of an ice age or the meteorite that may have wiped out the dinosaurs 65 million years ago. If so, this would be only the sixth time such devastation had occurred in the past 600 million years. The other five were associated with one-off events like the ice ages, a volcanic eruption or a meteor. This time, ecosystems are dying a thousanddeaths—from overfishing and the razing of the rain forests, but also from advances in agriculture. The British study, for instance, finds that one of the biggest problems is nitrogen pollution. Nitrogen is released when fossil fuels burn in cars and power plants—but also when ecologically rich heath-lands are plowed and fertilizers are spread. Nitrogen-rich fertilizers fuel the growth of tall grasses, which in turn overshadow and kill off delicate flowers like harebells and eyebrights. Even seemingly innocuous practices are responsible for vast ecological damage. When British farmers stopped feeding horses and cattle with hay and switched to silage, a kind of preserved short grass, they eliminated a favorite nesting spot of corncrakes, birds known for their raspy nightly mating calls; corncrake populations have fallen 76 percent in the past 20 years. The depressing list goes on and on. Many of these practices are being repeated throughout the world, in one form or another, which is why scientists believe that the British study has global implications. Wildlife is getting blander. “We don’t know which species are essential to the web of life so we’re taking a massive risk by eliminating any of them,” says David Wedin, professor of ecology at the University of Nebraska. Chances are we’ll be seeing the results of this experiment before too long.1．From the first paragraph, we get the impression that George MarshA．cherishes his adolescence memories.B．thinks highly of the efficiency of agriculture.C．may not have happy memories of past time.D．cannot remember his adolescence days.正确答案：A解析：推断题。
专业八级英语考试阅读理解练习题及答案
专业八级英语考试阅读理解练习题及答案专业八级英语考试阅读理解练习题及答案不吃饭则饥，不读书则愚。
以下是店铺为大家搜索整理专业八级英语考试阅读理解练习题及答案，希望对正在关注的您有所帮助!“I have great confidence that by the end of the decade we’ll know in vast detail how cancer cells arise,” says microbiologist Robert Weinberg, an expert on cancer. “But,” he cautions, “some people have the idea that once one understands the causes, the cure will rapidly follow. Consider Pasteur, he discovered the causes of many kinds of infections, but it was fifty or sixty years before cures were available.”This year, 50 percent of the 910,000 people who suffer from cancer will survive at least five years. In the year 2000, the National Cancer Institute estimates, that figure will be 75 percent. For some skin cancers, the five-year survival rate is as high as 90 percent. But other survival statistics are still discouraging -- 13 percent for lung cancer, and 2 percent for cancer of the pancreas.With as many as 120 varieties in existence, discovering how cancer works is not easy. The researchers made great progress in the early 1970s, when they discovered that oncogenes, which are cancer-causing genes, are inactive in normal cells. Anything from cosmic rays to radiation to diet may activate a dormant oncogene, but how remains unknown. If several oncogenes are driven into action, the cell, unable to turn them off, becomes cancerous.The exact mechanisms involved are still mysterious, but the likelihood that many cancers are initiated at the level of genes suggests that we will never prevent all cancers. “Changes are a normal part of the evolutionary process,” says oncologist William Hayward. Environmental factors can never be totallyeliminated; as Hayward points out, “We can’t prepare a medici ne against cosmic rays.”The prospects for cure, though still distant, are brighter.“First, we need to understand how the normal cell controls itself. Second, we have to determine whether there are a limited number of genes in cells which are always responsible for at least part of the trouble. If we can understand how cancer works, we can counteract its action.”习题1.The example of Pasteur in the passage is used to ________.[A] predict that the secret of cancer will be disclosed in a decade[B] indicate that the prospects for curing cancer are bright[C] prove that cancer will be cured in fifty to sixty years[D] warn that there is still a long way to go before cancer can be conquered2. The author implies that by the year 2000, ________.[A] there will be a drastic rise in the five-year survival rate of skin-cancer patients[B] 90 percent of the skin-cancer patients today will still be living[C] the survival statistics will be fairly even among patients with various cancers[D] there won’ t be a drastic increase of survival rate of all cancer patients3. Oncogenes are cancer-causing genes ________.[A] that are always in operation in a healthy person[B] which remain unharmful so long as they are not activated[C] that can be driven out of normal cells[D] which normal cells can’t turn off4. The word “dormant” in the third paragraph most probably means ________.[A] dead[B] ever-present[C] inactive[D] potential全文翻译“我有极大的信心相信到这个十年期结束时我们将会详尽地知晓癌细胞的生成原因，”一位癌症专家和微生物学家罗伯特•温伯格说道。
英语专业八级（阅读理解）练习试题及答案
英语专业八级（阅读理解）练习试题及答案一、问答题（共7题，共70分）1.As Gilbert White，Darwin ， and others observed long ago，all species appear to have theinnate capacity to increase their numbers from generation to generation. The task forecologistsis to untangle the environmentaand biologicalfactorsthat hold this intrinsiccapacity for poppation growth in check over the long run. The great variety of dynamicbehaviorsexhibitedby differentpoppationmakes thistaskmore difficpt：sompoppations remain roughly constant from year to year; others exhibit regpar cycles ofabundance and scarcity; still others vary wildly， with outbreaks and crashes that arein some cases plainly correlated with the weather， and in other cases not.To impose some order on this kaleidoscopeof patterns ， one school of thought proposespiding poppations into two groups. These ecologists posit that the relatively steadypoppations havedensity-dependent growth parameters; that is， rates ofbirth ， death ，and migrationwhich depend strongly on poppation density. The highly varying poppationshave density-independent growth parameters， with vital rates buffeted by environmentalevents ;these rates fluctuate in a way that is wholly independent of poppationdensity.This dichotomy has its uses， but it can cause problems if taken too literally. Forone thing ， no poppation can be driven entirely by density-independent factors all thetime. No matter how severely or unpredictably birth， death ， and migration rates may befluctuatingaroundtheirlong-termaverages ， ifthere were nodensity-dependenteffects ，the poppationwopd ， in the long run ， eitherincrease or decrease without bound (barringa miracle by which gains and losses canceled exactly)。
2023年专八英语考试阅读练习及答案解析2
2023年专八英语考试阅读练习及答案解析更多精彩内容请及时____应届毕业生考试网!Passage Twenty (NCB in Interpol)The organization known to the world as Interpolhas sometimes been described as an outfit of chisel-jawed gimlet-eyed crime fighters who put their livesin jeopardy every working hour.Less flatteringly, Interpol has also been described as a huge filing cabi, stuffed with clerks choking on their own statistics.As with most generalities, there is some truth in both statements.There are, certainly, some grimbattlers of crime to be found working withInterpol.There are, just as surely, those drones shuffling mountains of paper whose cheeks are sallow from indoor life.Consider the charisma of the name alone: INTERPOL, the international policeforce.Continents leaped in a single bound, oceans crossed in the space of a breath, villains watched byeyes that never sleep.Surprisingly, a lot of it happens almost that way.Four groups coordinate and direct the activitiesof Interpol.One of them is the National Central Bureaus, or NCBs, bodies designated by the member nations to serve as their link with Interpol.These are the front-line troops, the action people.IN the United States, the Treasury Department is the National Central Bureau.In the United Kingdom, it is Scotland Yard; the Questura in Italy and the Melbourne City Police in Australia.Because police organization varies from country, the NCBs were established to act as the one special group to handle Interpol chores and unsure maximum cooperation between nations.Each NCB is usually an official gover____ent body with police powers if a country has only one central police authority, that body bees the National Centre Bureau.Of course, any service appointed as an NCB is bound to its nation’s law and authority and retains its national title.Each NCB is connected by radio to the regional station for its geographic zone.The regional stations are connected to the Central Station in France.The radio work is versatile.work stations can monitor the Central station or any regional station.Because ofthis messages can be broadcast to more than onestation at a time.A coding system determines the urgency of each message so that those with highpriority can be given precedence.Besides, other munication tools, such as radio-teleprinters and phototelegraphy equipment.Permit rapid transfers of fingerprints and photographs.Sometimes ever more advanced technology is employed.When the police all over the world were looking for a Canadian named George Leray, they turned to the Early BirdSatellite.Leray had led his gang on a daring holdup of a Montreal bank and gotten away with $4million.Scotland Yard broadcast Leray’s photo to the world by satellite.An American who saw the picture in Florida recognized Leray as a man who was living on ayacht in Fort Lauderdale under an assumed name.The police were alerted and arrested Leray.1.What is the best title for this passage?[A]The Function of the Interpol.[B]The Quality of the Interpol.[C]The Organization of the Interpol.[D]The Rapid Development of the Interpol.2.The organization of this passage is ___________[A]general to specific.[B]cause and effect.[C]parison and contrast.[D]development.3.The sentence “stuffed with clerks choking on their own statistics” in the first paragraph is closest in meaning to ___________[A]a lot of employees busying in their work.[B]many office workers busying with various documents.[C]crowded with office workers busying with their own collected data.[D]workers busying in their own information.4.Which is the easiest tool to municate?[A]Satellite.[B]Radio.[B]Teleprinter.[D]Phototelegraphy.Vocabulary1.Interpol 国际刑警组织2.outfit 全班人马，有组织团体3.chisel-jawed 仪表英俊的4.gimlet-eyed 目光锐利的5.jeopardy 危险6.flatteringly 奉承7.choke 闷死choking on their own statistics 被自己的统计数字弄的喘不过气来8.as with most generalities 和大多数笼统说法一样9.grim 冷酷的10.drone 懒汉，懒洋洋的人11.shuffle 反复挪动，乱翻，洗(纸牌)12.charisma 超凡的魅力13.National Central Bureaus 国家中心局14.Treasury Department 财政部(美)15.Questura 警察局(意)16.Melbourne 墨尔本警察局17.chore 日常零星工作18.to be bound to 受......的约束，义务，一定......19.geographic zone 地区，地带20.versatile 有多方面用途的21.radio-teleprinter 无线电打印机22.phototelegraph23.daring 大胆的24.holdup 抢劫25.alert 使警觉，使处于待命状态难句译注1.The organization known to the world as Interpol has sometimes been described as an outfit of chisel-jawed gimlet-eyed crime fighters who put their livesin jeopardy every working hour.Less flatteringly, Interpol has also been described as a huge filing cabi, stuffed with clerks choking on their own statistics.[构造简析] 两个句子都是被动语气，都有分词短语。
英语专八考试阅读练习及答案解析
英语专八考试阅读练习及答案解析英语专八考试阅读练习及答案解析no pain, no gain. 以下是我为大家搜寻整理的英语专八考试阅读练习及答案解析，期望能给大家带来帮忙!更多精彩内容请准时关注我们应届毕业生考试网!The British psychoanalyst John Bowlby maintains that separation from the parents during the sensitive "attachment' period from birth to three may scar a childs personality and predispose to emotional problems in later life. Some people have drawn the conclusion from Bowlbys work that children should not be subjected to day care before the age of three because of the parental separation it entails, and many people do believe this. But there are also arguments against such a strong conclusion.Firstly, anthropologists point out that the insulated love affair between children and parents found in modern societies does not usually exist in traditional societies. For example, we saw earlier that among the Ngoni the father and mother of a child did not rear their infant alone--far from it. Secondly, common sense tells us that day care would not so widespread today if parents, caretakers found children had problems with it. Statistical studies of this kind have not yet been carried out, and even if they were, the results would be certain to be complicated and controversial. Thirdly, in the last decade, there have been a number of careful American studies of children in day care, and they have uniformly reported that day care hada neutral or slightly positive effect on childrens development. But tests that have had to be used to measure this development are not widely enough accepted to settle the issue.But Bowlbys analysis raises the possibility that early day care has delayed effects. The possibility that such care might lead to, say, more mental illness or crime 15 or 20 years later can only be explored by the use of statistics. Whatever the long-term effects, parents sometimes find the immediate effects difficult to deal with. Children under three are likely to protest at leaving their parents and show unhappiness. At the age of three or three and a half almost all children find the transition to nursery easy, and this is undoubtedly why more and more parents make use of child care at this time. The matter, then, is far from clear-cut, though experience and available evidence indicate that early care is reasonable for infants.1. This passage primarily argues that ___.A. infants under the age of three should not be sent to nursery schools.B. whether children under the age of three should be sent to nursery schools.C. there is not negative long-term effect on infants who are sent to school before they are three.D. there is some negative effect on children when they are sent to school after the age of three.2. The phrase "predispose to' (Para. 1, line 3) most probably means ___.A. lead toB. dispose toC. get intoD. tend to suffer3. According to Bowlbys analysis, it is quite possible that ___.A. childrens personalities will be changed to some extent through separation from their parents.B. early day care can delay the occurrence of mental illness in children.C. children will be exposed to many negative effects from early day care later on.D. some long-term effects can hardly be reduced from childrens development.4. It is implied but not stated in the second paragraph that ___.A. traditional societies separate the child from the parent at an early age.B. Children in modern societies cause more troubles than those in traditional societies.C. A child did not live together with his parents among the Ngoni.D. Children in some societies did not have emotional problems when separated from the parents.5. The writer concludes that ___.A. it is difficult to make clear what is the right age for nursery school.B. It is not settled now whether early care is reasonable for children.C. It is not beneficial for children to be sent to nursery school.D. It is reasonable to subject a child above three to nursery school.答案：BDCAD文档内容到此结束，欢迎大家下载、修改、丰富并分享给更多有需要的人。
英语专八阅读理解练习附答案优秀2篇
英语专八阅读理解练习附答案优秀2篇英语专八阅读理解练习附答案篇一Joy and sadness are experienced by people in all cultures around the world, but how can we tell when other people are happy or despondent? It turns out that the expression of many emotions may be universal. Smiling is apparently a universal sign of friendliness and approval. Baring the teeth in a hostile way, asnoted by Charles Darwin in the nineteenth century, may be a universe sign of anger. As the originator of the theory of evolution, Darwin believed that the universal recognition of facial expressions would have survival value. For example, facial expressions could signal the approach of enemies (or friends) in the absence of language.Most investigators concur that certain facial expressions suggest the same emotions in a people. Moreover, people in diverse cultures recognize the emotions manifested by the facial expressions. In classic research Paul Ekman took photographs of people exhibiting the emotions of anger, disgust, fear, happiness, and sadness. He then asked people around the world to indicate what emotions were being depicted in them. Those queried ranged from European college students to members of the Fore, a tribe that dwells in the New Guinea highlands. All groups including the Fore, who had almost no contact with Western culture, agreed on the portrayed emotions. The Fore 〖〗also displayed familiar facial expressions when asked how they would respond if they were the characters in stories that called for basic emotional responses. Ekman and his colleagues morerecently obtained similar results in a study of ten cultures in which participants were permitted to report that multiple emotions were shown by facial expressions. The participants generally agreed on which two emotions were being shown and which emotion was more intense.Psychological researchers generally recognize that facial expressions reflect emotional states. Infact, various emotional states give rise to certain patterns of electrical activity in the facial muscles and in the brain. The facial-feedback hypothesis argues, however, that the causal relationship between emotions and facial expressions can also work in the opposite direction. According to this hypothesis, signals from the facial muscles (feedback) are sent back to emotion centers of the brain, and so a person#39;s facial expression can influence that person#39;s emotional state.ConsiderDarwin#39;s words: The free expression by outward signs of an emotion intensifies it. On the otherhand, the repression, as far as possible, of all outward signs softens our emotions. Can smiling giverise to feelings of good will, for example, and frowning to anger?Psychological research has given rise to some interesting findings concerning the facial-feedback hypothesis. Causing participants in experiments to smile, for example, leads them to report morepositive feelings and to rate cartoons (humorous drawings of people or situations) as being morehumorous. When they are caused to frown, they rate cartoons as being more aggressive.What are the possible links between facial expressions and emotion? One link is arousal, which is the level of activity or preparedness for activity in an organism. Intense contraction of facial muscles,such as those used in signifying fear, heightens arousal. Self-perception of heightened arousal then leads to heightened emotional activity. Other links may involve changes in brain temperature and the release of neurotransmitters (substances that transmit nerve impulses.) The contraction of facial muscles both influences the internal emotional state andreflects it. Ekman has found that theso-called Duchenne smile, which is characterized by crow#39;s feet wrinkles around the eyes and asubtle drop in the eye cover fold so that the skin above the eye moves down slightly toward theeyeball, can lead to pleasant feelings.Ekman#39;s observation may be relevant to the British expression keep a stiff upper lip as are commendation for handling stress. It might be that a stiff lip suppresses emotional response-as long as the lip is not quivering with fear or tension. But when the emotion that leads to stiffening the lip is more intense, and involves strong muscle tension, facial feedback may heighten emotional response.1. The word despondent in the passage is closest in meaning toA curiousB unhappyC thoughtfulD uncertain2. The author mentions Baring the teeth in a hostile way in order toA differentiate one possible meaning of a particular facial expression from other meanings of itB upport Darwin#39;s theory of evolutionC provide an example of a facial expression whose meaning is widely understoodD contrast a facial expression that is easily understood with other facial expressions3. The word concur in the passage is closest in meaning toA estimateB agreeC expectD understand4. According to paragraph 2, which of the following was true of the Fore people ofNew Guinea?A They did not want to be shown photographs.B They were famous for their story-telling skills.C They knew very little about Western culture.D They did not encourage the expression of emotions.5. According to the passage, what did Darwin believe would happen to human emotions that werenot expressed?A They would become less intense.B They would last longer than usual.C They would cause problems later.D They would become more negative.参考答案：B C B C A英语专八阅读理解练习附答案篇二Racket, din clamor, noise, whatever you want to call it, unwanted sound is America’s most widespread nuisance. But noise is more than just a nuisance. It constitutes a real and present danger to people’s health. Day and night, at home, at work, and at play, noise can produce serious physical and psychological stress. No one is immune to this stress. Though we seem toadjust to noise by ignoring it, the ear, in fact, never closes and the body still responds—sometimes with extreme tension, as to a strange sound in the night. The annoyance we feel when faced with noise is the most common outward symptom of the stress building up inside us. Indeed, because irritability is so apparent, legislators have made public annoyance the basis of many noise abatement programs. The more subtle and more serious health hazards associated with stress caused by noise traditionally have been given much less attention. Nevertheless, when we are annoyed or made irritable by noise, we should consider these symptoms fair warning that other thing may be happening to us, some of which may be damaging to our health.Of many health hazards to noise, hearing loss is the most clearly observable and measurable by health professionals. The other hazards are harder to pin down. For many of us, there may be a risk that exposure to the stress of noise increases susceptibility to disease and infection. The more susceptible among us may experience noise as a complicating factor in heart problems and other diseases. Noise that causes annoyance and irritability in health persons may have serious consequences for these already ill in mind or body.Noise affects us throughout our lives. For example, there are indications of effects on the unborn child when mothers are exposed to industrial and environmental noise. During infancy and childhood, youngsters exposed to high noise levels may have trouble falling asleep and obtaining necessary amounts of rest.Why, then, is there not greater alarm about these dangers? Perhaps it is because the link between noise and many disabilities or diseases has not yet been conclusively demonstrated. Perhaps it is because we tend to dismiss annoyance as a price to pay for living in the modern world. It may also be because we still think of hearing loss as only an occupational hazard.1.In Paragraph 1, the phrase immune to are used to mean ___.A.unaffected byB.hurt byC.unlikely to be seen byD.unknown by2.The author’s attitude toward noise would best be described as ___.A.unrealisticB.traditionalC.concernedD.hysterical3.Which of the following best states the main idea of the passage?A.Noise is a major problem; most people recognize its importance.B.Although noise can be annoying, it is not a major problem.C.Noise is a major problem and has not yet been recognized as such.D.Noise is a major problem about which nothing can be done.4.The author condemns noise essentially because it ___.A.is against the lawB.can make some people irritableC.is a nuisanceD.in a ganger to people’s health5.The author would probably consider research about the effects noise has on people to be___.A.unimportantB.impossible.C.a waste of moneyD.essential答案：ACCDD。
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passage One (Violence Can Do Nothing to Diminish Race Prejudice) In some countries where racial prejudice is acute, violence has so come to be taken for granted as a means of solving differences, that it is not even questioned．There are countries where the white man imposes his rule by brute force; there are countries where the black man protests by setting fire to cities and by looting and pillaging．Important people on both sides, who would in other respects appear to be reasonable men, get up and calmly argue in favor of violence – as if it were a legitimate solution, like any other．What is really frightening, what really fills you with despair, is the realization that when it comes to the crunch, we have made no actual progress at all．We may wear collars and ties instead of war-paint, but our instincts remain basically unchanged．The whole of the recorded history of the human race, that tedious documentation of violence, has taught us absolutely nothing．We have still not learnt that violence never solves a problem but makes it more acute．The sheer horror, the bloodshed, the suffering mean nothing．No solution ever comes to light the morning after when we dismally contemplate the smoking ruins and wonder what hit us．The truly reasonable men who know where the solutions lie are finding it harder and herder to get a hearing．They are despised, mistrusted and even persecuted by their own kind because they advocate such apparently outrageous things as law enforcement．If half the energy that goes into violent acts were put to good use, if our efforts were directed at cleaning up the slums and ghettos, at improving living-standards and providing education and employment for all, we would have gone a long way to arriving at a solution．Our strength is sapped by having to mop up the mess that violence leaves in its wake．In a well-directed effort, it would not be impossible to fulfill the ideals of a stable social programme．The benefits that can be derived from constructive solutions are everywhere apparent in the world around us．Genuine and lasting solutions are always possible, providing we work within the framework of the law．Before we can even begin to contemplate peaceful co-existence between the races, we must appreciate each other’s problems．And to do this, we must learn about them: it is a simple exercise in communication, in exchanging information．'Talk, talk, talk,’the advocates of violence say,‘all you ever do is talk, and we are none the wiser．’It’s rather like the story of the famous barrister who painstakingly explained his case to the judge．After listening to a lengthy argument the judge complained that after all this talk, he was none the wiser．‘Possible, my lord,’the barrister replied,‘none the wiser, but surely far better informed．’Knowledgeis the necessary prerequisite to wisdom: the knowledge that violence creates the evils it pretends to solve．1．What is the best title for this passage?[A]Advocating Violence．[B]Violence Can Do Nothing to Diminish Race Prejudice．[C]Important People on Both Sides See Violence As a Legitimate Solution．[D]The Instincts of Human Race Are Thirsty for Violence．2．Recorded history has taught us ___________[A]violence never solves anything．[B]nothing．[C]the bloodshed means nothing．[D]everything．3．It can be inferred that truly reasonable men ___________[A]can’t get a hearing．[B]are looked down upon．[C]are persecuted．[D]Have difficulty in advocating law enforcement．4．“He was none the wiser” means ___________[A]he was not at all wise in listening．[B]He was not at all wiser than nothing before．[C]He gains nothing after listening．[D]He makes no sense of the argument．5．According the author the best way to solve race prejudice is ___________[A]law enforcement．[B]knowledge．[C]nonviolence．[D]Mopping up the violent mess．Vocabulary1．acute 严重的，剧烈的，敏锐的2．loot v．抢劫，掠夺；n．赃物3．pillage v．抢劫，掠夺4．crunch v．吱嘎吱嘎咬或嚼某物；n．碎裂声eg．when it comes to the crunch = if/when the decisive moment comes．当关键时刻来到时。
5．war-paint 出战前涂于身上的颜料。
（美印第安战士用）6．come to light = become known 显露，为人所知7．sap 剥削，使伤元气，破坏I was sapped by months of hospital treatment．我住院治疗几个月，大伤元气。
8．mop up 擦去，对付，处理9．wake 船迹，航迹in the wake of sth． = come after 随某事之后到来。
难句译注1．What is really frightening, what really fills you with despair is the realization that when it comes to the crunch, we have made no actual progress at all．【结构简析】when it comes to the crunch = when / if the decisive moment comes．当关键时刻来到时。