9701 托福阅读真题
托福阅读真题第97篇Why_Did_Agriculture_Begin_（答案文章最后）
托福阅读真题第97篇Why_Did_Agriculture_Begin_（答案文章最后）Transitions from a glacial to interglacial world occurred many times during the last two million years. Through all but the most recent glaciation, people moved in response to environmental changes rather than staying put and adapting to a new ecosystem. Then,after living on the move for more than a million years, they started to settle down and become farmers. What was so different when the glaciers melted this last time that caused people to adopt a new lifestyle?Several explanations have been offered to account for this radical change. Some argue that the shift from a cool, wet glacial climate to less hospitable conditions put an environmental squeeze on early people in the Middle East. In this view, hunters began growing plants in order to survive when the climate warmed and herds of wild game dwindled. Others argue that agriculture evolved in response to an inevitable process of cultural evolution without any specific environmental pressure. Whatever the reasons, agriculture developed independently in Mesopotamia, northern hina, and Mesoamerica.For much of the last century, theories for the origin of agriculture emphasized the competing oasis and cultural evolution hypotheses. The oasis hypothesis held that the postglacial drying of the Middle East restricted edible plants, people, and other animals to well- watered flood plains.This forced proximity promoted social bonds, which eventually led to domestication. In contrast, the cultural evolution hypothesis holds that regional environmental change was unimportant in the gradual adoption of agriculture through an inevitableprogression of social development. Unfortunately, neither hypothesis provides satisfying answers for why agriculture arose when and where it did.fundamental problem with the oasis theory is that the wild ancestors of our modern grains came to the Middle East from northern frica at the end of the last glaciation. This means that the variety of food resources available to people in the Middle East was expanding at the time that agriculture arose-the opposite of the oasis theory. So the story cannot be as simple as the idea that people, plants, and animals crowded into shrinking oases as the countryside dried.nd because only certain people in the Middle East adopted agriculture, the cultural evolution hypothesis falls short.griculture was not simply an inevitable stage on the road from hunting and gathering to more advanced societies.The transition to an agricultural society was a remarkable and puzzling behavioral adaptation. fter the peak of the last glaciation, people herded gazelles in Syria and Israel. Subsisting on these herds required less effort than planting, weeding, and tending domesticated crops. Similarly, in entral merica several hours spent gathering wild corn could provide food for a week. If agriculture was more difficult and time-consuming than hunting and gathering, why did people take it up in the first place?Increasing population density provides an attractive explanation for the origin and spread of agriculture. When hunting and gathering groups grew beyond the capacity of their territory to support them, part of the group would split off and move to a new territory.Once there was no more productive territory to colonize, growing populations developed more intensive (and time-consuming) ways to extract a living fromtheir environment. Such pressures favored groups that could produce food themselves to get more out of the land. In this view, agriculture can be understood as a natural behavioral response to increasing population.Modern studies have shown that wild strains of wheat and barley can be readily cultivated with simple methods. lthough this ease of cultivation suggests that agriculture could have originated many times in many places, genetic analyses show that modern strains of wheat, peas, and lentils all came from a small sample of wild varieties. omestication of plants fundamental to our modern diet occurred in just a few places and times when people began to more intensively exploit what had until then been secondary resources.1.Transitions from a glacial to interglacial world occurred many times during the last two million years. Through all but the most recent glaciation, people moved in response to environmental changes rather than staying put and adapting to a new ecosystem. Then,after living on the move for more than a million years, they started to settle down and become farmers. What was so different when the glaciers melted this last time that caused people to adopt a new lifestyle?2.Several explanations have been offered to account for this radical change. Some argue that the shift from a cool, wet glacial climate to less hospitable conditions put an environmental squeeze on early people in the Middle East. In this view, hunters began growing plants in order to survive when the climate warmed and herds of wild game dwindled. Others argue that agriculture evolved in response to an inevitable process of cultural evolution without any specific environmental pressure. Whatever the reasons, agriculture developed independently inMesopotamia, northern hina, and Mesoamerica.3.Several explanations have been offered to account for this radical change. Some argue that the shift from a cool, wet glacial climate to less hospitable conditions put an environmental squeeze on early people in the Middle East. In this view, hunters began growing plants in order to survive when the climate warmed and herds of wild game dwindled. Others argue that agriculture evolved in response to an inevitable process of cultural evolution without any specific environmental pressure. Whatever the reasons, agriculture developed independently in Mesopotamia, northern hina, and Mesoamerica.4.For much of the last century, theories for the origin of agriculture emphasized the competing oasis and cultural evolution hypotheses. The oasis hypothesis held that the postglacial drying of the Middle East restricted edible plants, people, and other animals to well- watered flood plains.This forced proximity promoted social bonds, which eventually led to domestication. In contrast, the cultural evolution hypothesis holds that regional environmental change was unimportant in the gradual adoption of agriculture through an inevitable progression of social development. Unfortunately, neither hypothesis provides satisfying answers for why agriculture arose when and where it did.5. fundamental problem with the oasis theory is that the wild ancestors of our modern grains came to the Middle East from northern frica at the end of the last glaciation. This means that the variety of food resources available to people in the Middle East was expanding at the time that agriculture arose-the opposite of the oasis theory. So the story cannot be as simple as the idea that people, plants, and animals crowded into shrinkingoases as the countryside dried.nd because only certain people in the Middle East adopted agriculture, the cultural evolution hypothesis falls short.griculture was not simply an inevitable stage on the road from hunting and gathering to more advanced societies.6.The transition to an agricultural society was a remarkable and puzzling behavioral adaptation. fter the peak of the last glaciation, people herded gazelles in Syria and Israel. Subsisting on these herds required less effort than planting, weeding, and tending domesticated crops. Similarly, in entral merica several hours spent gathering wild corn could provide food for a week. If agriculture was more difficult and time-consuming than hunting and gathering, why did people take it up in the first place?7.The transition to an agricultural society was a remarkable and puzzling behavioral adaptation. fter the peak of the last glaciation, people herded gazelles in Syria and Israel. Subsisting on these herds required less effort than planting, weeding, and tending domesticated crops. Similarly, in entral merica several hours spent gathering wild corn could provide food for a week. If agriculture was more difficult and time-consuming than hunting and gathering, why did people take it up in the first place?8.Increasing population density provides an attractive explanation for the origin and spread of agriculture. When hunting and gathering groups grew beyond the capacity of their territory to support them, part of the group would split off and move to a new territory.Once there was no more productive territory to colonize, growing populations developed more intensive (and time-consuming) ways to extract a living from their environment. Such pressures favored groups that could produce food themselves to get more out of the land. In this view,agriculture can be understood as a natural behavioral response to increasing population.9.Increasing population density provides an attractive explanation for the origin and spread of agriculture. ⬛When hunting and gathering groups grew beyond the capacity of their territory to support them, part of the group would split off and move to a new territory.⬛Once there was no more productive territory to colonize, growing populations developed more intensive (and time-consuming) ways to extract a living from their environment.⬛Such pressures favored groups that could produce food themselves to get more out of the land. In this view, agriculture can be understood as a natural⬛behavioral response to increasing population.10.。
2023托福考试阅读真题
2023托福考试阅读真题本文档提供了2023年托福考试阅读真题的题目和选项，供考生参考备考。
题目一文章：The Benefits of Outdoor Exercise问题：What are the benefits of exercising outdoors?选项：A. Improved mental healthB. Increased vitamin D productionC. Enhanced physical fitnessD. All of the above题目二文章：The Importance of Biodiversity问题：Why is biodiversity important?选项：A. It supports ecosystem stabilityB. It enhances food securityC. It promotes natural resource availabilityD. All of the above题目三文章：The Impact of Social Media on Society问题：What is the impact of social media on society?选项：A. Increased connectivityB. Greater access to informationD. All of the above题目四选项：A. ConvenienceB. Wide selection of productsD. All of the above题目五文章：The Benefits of Learning a Second Language问题：What are the benefits of learning a second language?选项：A. Improved cognitive functionB. Increased cultural understandingC. Enhanced career opportunitiesD. All of the above以上是2023托福考试阅读真题的一部分，希望考生们能够认真准备，取得好成绩。
托福真题：《1997年10月托福考试阅读理解全真试题》-托福真题
托福真题：《1997年10月托福考试阅读理解全真试题》-托福真题《1997年10月托福考试阅读理解全真试题》Question 1-7Hotels were among the earliest facilities that bound theUnited States together. They were both creatures and creatorsof communities, as well as symptoms of the frenetic quest for community. Even in the first part of the nineteenth century, Americans were already forming the habit of gathering from all corners of the nation for both public and private, business and pleasure purposes. Conventions were the new occasions, andhotels were distinctively American facilities making conven-tions possible. The first national convention of a major party to choose a candidate for President (that of the National Republican party, which met on December 12, 1831, and nominatedHenry Clay for President) was held in Baltimore, at a hotelthat was then reputed to be the best in the country. Thepresence in Baltimore of Barnum s City Hotel, a six-story building with two hundred apartments helps explain why many otherearly national political conventions were held there.In the longer run, too. American hotels made other national conventions not only possible but pleasant and convivial.The growing custom of regularly assembling from afar the representatives of all kinds of groups - not only for political conventions,but also for commercial, professional, learned, andavocational ones - in turn supported the multiplying hotels. By mid-twentieth century, conventions accounted for over a thirdof the yearly room occupancy of all hotels in the nation, about eighteen thousand different conventions were held annuallywith a total attendance of about ten million persons.Nineteenth-century American hotelkeepers, who were nolonger the genial, deferential "hosts" of the eighteenth-century European inn, became leading citizens. Holding a largestake in the community, they exercised power to make itprosper. As owners or managers of the local "palace of thepublic", they were makers and shapers of a principal community attraction. Travelers from abroad were mildly shocked by thishigh social position.1. The word "bound" in line 1 is closest in meaning to(A) led(B) protected(C) tied(D) strengthened2. The National Republican party is mentioned in line 10 as an example of a group(A) from Baltimore(B) of learned people(C) owning a hotel(D) holding a convention3. The word "assembling" in line 19 is closest in meaning to(A) announcing(B) motivating(C) gathering(D) contracting4. The word "ones" in line 22 refers to(A) hotels(B) conventions(C) kinds(D) representatives5. The word "it" in line 30 refers to(A) European inn(B) host(C) community(D) public6. It can be inferred from the passage that early hotelkeepers in the United States were(A) active politicians(B) European immigrants(C) Professional builders(D) Influential citizens7. Which of the following statements about early American hotels is NOT mentioned in the passage?(A) Travelers from abroad did not enjoy staying in them.(B) Conventions were held in them(C) People used them for both business and pleasure.(D) They were important to the community.Question 8-17Beads were probably the first durable ornaments humanspossessed, and the intimate relationship they had with theirowners is reflected in the fact that beads are among the most common items found in ancient archaeological sites. In thepast, as today, men, women, and children adorned them-selves with beads. In some cultures still, certain beads areoften worn from birth until death, and then are buried withtheir owners for the afterlife. Abrasion due to daily wear altersthe surface features of beads, and if they are buried for long,the effects of corrosion can further change their appearance. Thus, interest is imparted to the bead both by use and theeffects of time.Besides their wear ability, either as jewelry or incorporatedinto articles of attire, beads possess the desirable characteristics of every collectible, they are durable, portable, availablein infinite variety, and often valuable in their original cultural context as well as in today s market. Pleasing to look at and touch, beads come in shapes, colors, and materials that almost compel one to handle them and to sort them.Beads are miniature bundles of secrets waiting to berevealed: their history, manufacture, cultural context, economic role, and ornamental use are all points of information onehopes to unravel. Even the most mundane beads may havetraveled great distances and been exposed to many human experiences. The bead researcher must gather infor[1] [2] [3] [4] [5] 下一页[1] [2] [3] [4] [5] 下一页《1997年10月托福考试阅读理解全真试题》mation frommany diverse fields. In addition to having to be a generalist while specializing in what may seem to be a narrow field, the researcher is faced with the problem of primary materials that have little or no documentation. Many ancient beads that areof ethnographic interest have often been separated from their original cultural context.The special attractions of beads contribute to the uniquenessof bead research. While often regarded as the "smallchange of civilizations", beads are a part of every culture, and they can often be used to date archaeological sites and to designate the degree of mercantile, technological, and cultural sophistication.8. What is the main subject of the passage?(A) Materials used in making beads.(B) How beads are made(C) The reasons for studying beads(D) Different types of beads9. The word "adorned" in line 5 is closest in meaning to(A) protected(B) decorated(C) purchased(D) enjoyed10.The word "attire" in line 14 is closest in meaning to(A) ritual(B) importance(C) clothing(D) history11.All of the following are given as characteristics of collectible objects EXCEPT(A) durability(B) portability(C) value(D) scarcity.12.According to the passage, all of the following are factors that make people want to touch beads EXCEPT the(A) shape(B) color(C) material(D) odor13.The word "unravel" in line 23 is closest in meaning to(A) communicate(B) transport(C) improve(D) discover14.The word "mundane" in line 16 is closest in meaning to(A) carved(B) beautiful(C) ordinary(D) heavy15.It is difficult to trace the history of certain ancient beads because they(A) are small in size(B) have been buried underground(C) have been moved from their original locations(D) are frequently lost16.Knowledge of the history of some beads may be useful in the studies done by which of the following?(A) Anthropologists(B) Agricultural experts(C) Medical researchers(D) Economists17.Where in the passage does the author describe why the appearance of beads may change?(A) Lines 3-4(B) Lines 6-8(C) Lines 12-13(D) Lines 20-22.Question 18-31In the world of birds, bill design is a prime example of evolutionary fine-tuning. Shorebirds such as oystercatchers usetheir bills to pry open the tightly sealed shells of their prey, hummingbirds have stiletto-like bills to probe the deepestnectar-bearing flowers, and kiwis smell out earthworms thanks to nostrils located at the tip of their beaks. But few birds aremore intimately tied to their source of sustenance than arecrossbills. Two species of these finches, named for the waythe upper and lower parts of their bills cross, rather than meetin the middle, reside in the evergreen forests of North Americaand feed on the seeds held within the cones of coniferous trees.The efficiency of the bill is evident when a crossbill locatesa cone. Using a lateral motion of its lower mandible, thebird separates two overlapping scales on the cone and exposesthe seed. The crossed mandibles enable the bird to exert apowerful biting force at the bill tips, which is critical for maneuvering them between the scales and spreading the scalesapart. Next, the crossbill snakes its long tongue into the gapand draws out the seed. Using the combined action of the billand tongue, the bird cracks open and discards the woody seed covering action and swallows the nutritious inner kernel. This whole process takes but a few seconds and is repeated hundreds oftimes a day.The bills of different crossbill species and subspecies vary -some are stout and deep, others more slander and shallow. Asa rule, large-billed crossbills are better at securing seeds from large cones, while small-billed crossbills are more deft at removing the seeds from small, thin-scaled cones. Moreover,the degree to which cones are naturally slightly open or tightly closed helps determine which bill design is the best.One anomaly is the subspecies of red crossbill known asthe Newfoundland crossbill. This bird has a large, robust bill,yet most of Newfoundland s conifers have small cones, thesame kind of cones that the slender-billed white-wings rely on.18.What does the passage mainly discuss?(A) The importance of conifers in evergreen forests(B) The efficiency of the bill of the crossbill(C) The variety of food available in a forest(D) The different techniques birds use to obtain food19.Which of the following statements best represents the type of "evolutionary fine - turning" me上一页[1] [2] [3] [4] [5] 下一页上一页[1] [2] [3] [4] [5] 下一页《1997年10月托福考试阅读理解全真试题》ntioned in line1?(A) Different shapes of bills have evolved depending on the available food supply(B) White - wing crossbills have evolved from red crossbills(C) Newfoundland s conifers have evolved small cones(D) Several subspecies of crossbills have evolved from two species20.Why does the author mention oystercatchers, hummingbirds, and kiwis in lines 2-5?(A) They are examples of birds that live in the forest(B) Their beaks are similar to the beak of the crossbill(C) They illustrate the relationship between bill design and food supply(D) They are closely related to the crossbill21.Crossbills are a type of(A) shorebird(B) hummingbird(C) kiwi(D) finch22.Which of the following most closely resembles the bird described in lines 8-11?(A) （图）(B) （图）(C) （图）(D) （图）23.The word "which" in line 16 refers to(A) seed(B) bird(C) force(D) bill24.The word "gap" in line 18 is closest in meaning to(A) opening(B) flower(C) mouth(D) tree25.The word "discards" in line 20 is closest in meaning to(A) eats(B) breaks(C) finds out(D) gets rid of26.The word "others" in line 25 refers to(A) bills(B) species(C) seeds(D) cones27.The word "deft" in line 27 is closest in meaning to(A) hungry(B) skilled(C) tired(D) pleasant28.The word "robust" in line 32 is closest in meaning to(A) strong(B) colorful(C) unusual(D) sharp29.In what way is the Newfoundland crossbill an anomaly?(A) It is larger than the other crossbill species(B) It uses a different technique to obtain food(C) The size of its bill does not fit the size of its food source(D) It does not live in evergreen forests.30.The final paragraph of the passage will probably continue with a discussion of(A) other species of forest birds(B) the fragile ecosystem of Newfoundland(C) what mammals live in the forests of North America(D) how the Newfoundland crossbill survives with a large bill31.Where in the passage does the author describe how a crossbill removes a seed from its cone?(A) The first paragraph(B) The second paragraph(C) The third paragraph(D) The forth paragraphQuestion 32-38If you look closely at some of the early copies of the De-laration of Independence, beyond the flourished signature ofJohn Hancock and the other 55 men who signed it, you willalso find the name of one woman, Mary Katherine Goddard.It was she, a Baltimore printer, who published the first official copies of the Declaration, the first copies that included the names of its signers and therefore heralded the support of all thirteen colonies.Mary Goddard first got into printing at the age of twenty-four when her brother opened a printing shop in Providence,Rhode Island, in 1762. When he proceeded to get into troublewith his partners and creditors, it was Mary Goddard and her mother who were left to run the shop. In 1765 they began publishing the Providence Gazette, a weekly newspaper.Similar problems seemed to follow her brother as he opened businesses in Philadelphia and again in Baltimore. Each time Ms. Goddard was brought in to run the newspapers. After starting Baltimore s first newspaper, The Maryland Journal, in1773, her brother went broke trying to organize a colonialpostal service. While he was in debtor s prison. Mary Katherine Goddard s name appeared on the newspaper s mastheadfor the first time.When the Continental Congress fled there from Philadelphiain 1776, it commissioned Ms. Goddard to print the firstofficial version of the Declaration of Independence in January 1777. After printing the documents, she herself paid the post riders to deliver the Declaration throughout the colonies.During the American Revolution, Mary Goddard continuedto publish Baltimore s only newspaper, which one historian claimed was "second to none among the colonies". She wasalso the city s postmaster from 1775 to 1789 - appointed by Benjamin Franklin - and is considered to be the first womanto hold a federal position.32.With which of the following subjects is the passage mainly concerned?(A) The accomplishments of a female publisher(B) The weakness of the newspaper industry(C) The rights of a female publisher(D) The publishing system in colonial America33.Mary Goddard s name appears on the Declaration of Independence because(A) she helped write the original document(B) she published the document(C) she paid to have the document printed(D) her brother was in prison34.The word "heralded" in line 7 is closest in meaning to上一页[1] [2] [3] [4] [5] 下一页上一页[1] [2] [3] [4] [5] 下一页《1997年10月托福考试阅读理解全真试题》(A) influenced(B) announced(C) rejected(D) ignored35.According to the passage, Mary Goddard first became involved in publishing when she(A) was appointed by Benjamin Franklin(B) signed the Declaration of Independence.(C) took over her brother s printing shop(D) moved to Baltimore36.The word "there" in line 23 refers to(A) the colonies(B) the print shop(C) Baltimore(D) Providence37.It can be inferred from the passage that Mary Goddard was(A) an accomplished businesswoman(B) extremely wealthy(C) a member of the Continental Congress(D) a famous writer38.The word "position" in line 33 is closest in meaning to(A) job(B) election(C) document(D) locationQuestion 39-50Galaxies are the major building blocks of the universe. Agalaxy is giant family of many millions of stars, and it is held together by its own gravitational field. Most of the material universe is organized into galaxies of stars together withgas and dust.There are three main types of galaxy: spiral, elliptical,and irregular. The Milky Way is a spiral galaxy, a flattish disc of stars with two spiral arms emerging from its central nucleus. About one-quarter of all galaxies have this shape. Spiral galaxies are well supplied with the interstellar gas in whichnew stars form: as the rotating spiral pattern sweeps aroundthe galaxy it compresses gas and dust, triggering the formationof bright young stars and in its arms. The elliptical galaxies have a symmetrical elliptical or spheroidal shape with no obviousstructure. Most of their member stars are very old and since ellipticals are devoid of interstellar gas, no new stars are forming in them. The biggest and brightest galaxies in the universeare ellipticals with masses of about 1013 times that of the Sun, these giants may frequently be sources of strong radioemission, in which case they are called radio galaxies. About two- thirds of all galaxies are elliptical. Irregular galaxies comprise about one-tenth of all galaxies and they come in manysubclasses.Measurement in space is quite different from measure-ment on Earth. Some terrestrial distances can be expressed as intervals of time, the time to fly from one continent to anotheror the time it takes to drive to work, for example. By comparison with these familiar yardsticks, the distances to thegalaxies are incomprehensibly large, but they too are mademore manageable by using a time calibration, in this case the distance that light travels in one year. On such a scale thenearest giant spiral galaxy, the Andromeda galaxy, is twomillion light years away. The most distant luminous objects seenby telescopes are probably ten thousand million light yearsaway. Their light was already halfway here before the Eartheven formed. The light from the nearby Virgo galaxy set outwhen reptiles still dominated the animal world.39.The word "major" in line 1 is closest in meaning to(A) intense(B) principal(C) huge(D) unique40.What does the second paragraph mainly discuss?(A) The Milky Way(B) Major categories of galaxies(C) How elliptical galaxies are formed(D) Differences between irregular and spiral galaxies41.The word "which" in line 10 refers to(A) dust(B) gas(D) galaxy42.According to the passage, new stars are formed in spiral galaxies due to(A) an explosion of gas(B) the compression of gas and dust(C) the combining of old stars(D) strong radio emissions43.The word "symmetrical" in line 14 is closest in meaning to(A) proportionally balanced(B) commonly seen(C) typically large(D) steadily growing44.The word "obvious" in line 14 is closest in meaning to(A) discovered(B) apparent(C) understood(D) simplistic45.According to the passage, which of the following is NOT true of elliptical galaxies?(A) They are the largest galaxies.(B) They mostly contain old stars.(C) They contain a high amount of interstellar gas.(D) They have a spherical shape.46.Which of the following characteristics of radio galaxies is mentioned in the passage?(A) They are a type of elliptical galaxy.(B) They are usually too small to be seen with a telescope.(C) They are closely related to irregular galaxies.(D) They are not as bright as spiral galaxies.47.What percentage of galaxies are irregular?(A) 10%(B) 25%(C) 50%(D) 75%48.The word "they" in line 29 refers to(B) yardsticks(C) distances(D) galaxies49.Why does the author mention the Virgo galaxy an上一页[1] [2] [3] [4] [5] 下一页上一页[1] [2] [3] [4] [5] 下一页《1997年10月托福考试阅读理解全真试题》d the Andromeda galaxy in the third paragraph?(A) To describe the effect that distance has no visibility.(B) To compare the ages of two relatively young galaxies.(C) To emphasize the vast distances of the galaxies from Earth.(D) To explain why certain galaxies cannot be seen by a telescope.50.The word "dominated" in line 37 is closest in meaning to(A) threatened(B) replaced(C) were developing in(D) were prevalent in <BR上一页[1] [2] [3] [4] [5]上一页[1] [2] [3] [4] [5]。
托福阅读真题及答案精选
托福阅读真题及答案精选托福阅读中，无论是阅读速度还是解题技巧，亦或是长难句，每一种因素都会成为同学们阅读高分路上的重要障碍。
因此，大家最好的备考方式，就是利用真题练习，从整体上来备考，这样有助于我们提高整体的阅读水平。
店铺为大家推荐的是托福阅读真题精选，供大家练习。
托福阅读真题1Tulips are Old World, rather than New World, plants, with the origins of the species lying in Central Asia. They became an integral part of the gardens of the Ottoman Empire from the sixteenth century onward, and, soon after, part of European life as well. Holland, in particular, became famous for its cultivation of the flower.A tenuous line marked the advance of the tulip to the New World, where it was unknown in the wild. The first Dutch colonies in North America had been established in New Netherlands by the Dutch West India Company in 1624, and one individual who settled in New Amsterdam (today's Manhattan section of New York City) in 1642 described the flowers that bravely colonized the settlers' gardens. They were the same flowers seen in Dutch still-life paintings of the time: crown imperials, roses, carnations, and of course tulips. They flourished in Pennsylvania too, where in 1698 William Penn received a report of John Tateham's Great and Stately Palace, its garden full of tulips. By 1760, Boston newspapers were advertising 50 different kinds of mixed tulip roots. But the length of the journey between Europe and North America created many difficulties. Thomas Hancock, an English settler, wrote thanking his plant supplier for a gift of some tulip bulbs from England, but his letter the following year grumbledthat they were all dead.Tulips arrived in Holland, Michigan, with a later wave of early nineteenth-century Dutch immigrants who quickly colonized the plains of Michigan. Together with many other Dutch settlements, such as the one at Pella, Iowa, they established a regular demand for European plants. The demand was bravely met by a new kind of tulip entrepreneur, the traveling salesperson. One Dutchman, Hendrick van der Schoot, spent six months in 1849 traveling through the United States taking orders for tulip bulbs. While tulip bulbs were traveling from Europe to the United States to satisfy the nostalgic longings of homesick English and Dutch settlers, North American plants were traveling in the opposite direction. In England, the enthusiasm for American plants was one reason why tulips dropped out of fashion in the gardens of the rich and famous.1. Which of the following questions does the passage mainly answer?(A) What is the difference between an Old World and a New World plant?(B) Why are tulips grown in many different parts of the world?(C) How did tulips become popular in North America?(D) Where were the first Dutch colonies in North America located?2. The word integral in line 2 is closest in meaning to(A) interesting(B) fundamental(C) ornamental(D) overlooked3. The passage mentions that tulips were first found in which of the following regions?(A) Central Asia(B) Western Europe(C) India(D) North America4. The word flourished in line 11 is closest in meaning to(A) were discovered(B) were marketed(C) combined(D) thrived5. The author mentions tulip growing in New Netherlands, Pennsylvania. and Michigan in order toillustrate how(A) imported tulips were considered more valuable than locally grown tulips(B) tulips were commonly passed as gifts from one family to another(C) tulips grew progressively more popular in North America(D) attitudes toward tulips varied from one location to another6. The word grumbled in line 16 is closest in meaning to(A) denied(B) warned(C) complained(D) explained7. The passage mentions that one reason English and Dutch settlers planted tulips in theirgardens was that tulips(A) were easy to grow(B) had become readily available(C) made them appear fashionable(D) reminded them of home8. The word they in line 20 refers to(A) tulips(B) plains(C) immigrants(D) plants9. According to the passage , which of the following changes occurred in English gardens duringthe European settlement of North America?(A) They grew in size in order to provide enough plants to export to the New World.(B) They contained a wider variety of tulips than ever before.(C) They contained many new types of North American plants.(D) They decreased in size on the estates of wealthy people.10. The passage mentions which of the following as a problem associated with the importation oftulips into North America?(A) They were no longer fashionable by the time they arrived.(B) They often failed to survive the journey.(C) Orders often took six months or longer to fill.(D) Settlers knew little about how to cultivate them.PASSAGE 85 CBADC CDCCB托福阅读真题2The smooth operation of an ant colony depends on ten to twenty different signals, most of which are pheromones (chemical signals triggering behavioral responses). It is estimated that red fire ants employ at least twelve different chemical signals. The simplest of these is the carbon dioxide from the respiration of an ant cluster, a chemical that acts as a pheromone to promoteaggregation. Workers move toward a source of carbon dioxide, resulting in solitary ants moving to join a group. At the other extreme, the most complex of the fire ants' signals is probably colony odor, by which the workers of a particular colony or nest identify another worker as local or foreign. Each ant nest has its own odor as a result of its location, history, and local food supply. The resident ants pick up this odor on their bodies, so that ants of the same species, but from different nests, have different colony odors. This allows ants to identify intruders and maintain colony integrity.Fire ants also make use of an alarm pheromone to alert workers to an emergency, and their scouts lay down a trail pheromone as a guide during mass migrations. A fire ant queen emits a chemical signal that identifies her to the colony's workers. They respond by scurrying to gather around her. The decomposing corpse of a dead ant also generates a signal, to which workers respond by eliminating the corpse from the nest.Ants provide examples of both public (accessible to other species) and private messages. One of their most important private messages concerns food, for a food source is worth keeping secret. Each species marks its trails with signals that are meaningless to others, so that an ant crossing a trail left by another ant species typically notices nothing. On the other hand, a secret signal to mark a dead body is unnecessary. Many kinds of ants perceive a natural decomposition product of dead insects as a signal to remove a corpse. If an outsider recognizes this message and moves the body, no harm is done.1. What aspect of ants does the passage mainly discuss?(A) The relationship between the queen and the worker ants(B) Ways in which ants use chemical signals(C) Methods ants use to identify food sources(D) The importance of respiration in the production of ant pheromones2. The phrase smooth operation in line 1 is closest in meaning to(A) daily activity(B) effective functioning(C) delicate balance(D) permanent location3. According to the passage , carbon dioxide serves which of the following functions for fire ants?(A) It protects the queen.(B) It attracts other ant species.(C) It informs workers of possible danger.(D) It encourages the ants to gather together.4. The word cluster in line 4 is closest in meaning to(A) organ(B) activity(C) group(D) cycle5. According to the passage , each nest has a distinct odor that allows its inhabitants to(A) find the location of the nest in the dark(B) distinguish worker ants from other ants(C) distinguish foreign ants from resident ants(D) signal other inhabitants when foreign ants attack6. The word alert in line 13 is closest in meaning to(A) allow(B) transport(C) warn(D) provide7. What is the role of pheromones in the mass migrations of ants?(A) Pheromones are used to create a trail that directs the ants during migrations.(B) Pheromones signal the ants that the nest has been invaded and must be abandoned.(C) Pheromones control the speed at which ants move from one location to another.(D) Pheromones enable scouts to identify suitable areas for establishing a new nest.8. The word scurrying in line 16 is closest in meaning to(A) agreeing(B) appearing(C) competing(D) rushing9. The word others in line 21 refers to(A) private messages(B) species(C) trails(D) signals10. Why does the author mention dead insects in line 23?(A) To compare the social behaviors of ants with those of other insects(B) To emphasize the dangers that all insects encounter(C) To argue the superiority of ants over other insects(D) To indicate a behavior that is common among various kinds of ants11. Which of the following terms is defined in the passage ?(A) pheromones (line 2)(B) colony integrity (lines 12)(C) mass migrations (line 14)(D) private messages (lines 18-19)PASSAGE 86 BBDCC CADBD A托福阅读真题3Because the low latitudes of the Earth, the areas near the equator, receive more heat than the latitudes near the poles, and because the nature of heat is to expand and move, heat is transported from the tropics to the middle and high latitudes. Some of this heat is moved by winds and some by ocean currents, and some gets stored in the atmosphere in the form of latent heat. The term latent heat refers to the energy that has to be used to convert liquid water to water vapor. We know that if we warm a pan of water on a stove, it will evaporate, or turn into vapor, faster than if it is allowed to sit at room temperature. We also know that if we hang wet clothes outside in the summertime they will dry faster than in winter, when temperatures are colder. The energy used in both cases to change liquid water to water vapor is supplied by heat — supplied by the stove in the first case and by the Sun in the latter case. This energy is not lost. It is stored in water vapor in the atmosphere as latent heat. Eventually, the water stored as vapor in the atmosphere will condense to liquid again, and the energy will be released to the atmosphere.In the atmosphere, a large portion of the Sun's incoming energy is used to evaporate water, primarily in the tropical oceans. Scientists have tried to quantify this proportion of the Sun's energy. By analyzing temperature, water vapor, and wind data around the globe, they have estimated the quantity to be about 90 watts per square meter, or nearly 30 percent of the Sun's energy. Once this latent heat is stored within the atmosphere, itcan be transported, primarily to higher latitudes, by prevailing, large-scale winds. Or it can be transported vertically to higher levels in the atmosphere, where it forms clouds and subsequent storms, which then release the energy back to the atmosphere.1. The passage mainly discusses how heat(A) is transformed and transported in the Earth's atmosphere(B) is transported by ocean currents(C) can be measured and analyzed by scientists(D) moves about the Earth's equator2. The passage mentions that the tropics differ from the Earth's polar regions in which of thefollowing ways?(A) The height of cloud formation in the atmosphere.(B) The amount of heat they receive from the Sun.(C) The strength of their large scale winds.(D) The strength of their oceanic currents.3. The word convert in line 6 is closest in meaning to(A) mix(B) change(C) adapt(D) reduce4. Why does the author mention the stove in line 10?(A) To describe the heat of the Sun.(B) To illustrate how water vapor is stored.(C) To show how energy is stored.(D) To give an example of a heat source.5. According to the passage , most ocean water evaporation occurs especially(A) around the higher latitudes(B) in the tropics(C) because of large-scale winds(D) because of strong ocean currents6. According to the passage , 30 percent of the Sun's incoming energy(A) is stored in clouds in the lower latitudes(B) is transported by ocean currents(C) never leaves the upper atmosphere(D) gets stored as latent heat7. The word it in line 18 refers to(A) square meter(B) the Sun's energy(C) latent heat(D) the atmosphere8. The word primarily in the line 19 is closest in meaning to(A) chiefly(B) originally(C) basically(D) clearly9. The word prevailing in line 19 is closest in meaning to(A) essential(B) dominant(C) circular(D) closest10. All of the following words are defined in the passage EXCEPT(A) low latitudes(line 1)(B) latent heat (line 5)(C) evaporate (line 7)(D) atmosphere (line 14)PASSAGE 87 ABBDB DCABD托福阅读真题精选。
1997年1月托福阅读全真试题4
Question 29-39 Large animals that inhabit the desert have evolved a number of adaptations for reducing the effects of extreme heat. One adaptation is to be light in color， and to reflect rather than absorb the Sun's rays. Desert mammals also depart from the normal mammalian practice of maintaining a constant body temperature. Instead of trying to keep down the body temperature deep inside the body， which would involve the expenditure of water and energy， desert mammals allow their temperatures to rise to what would normally be fever height， and temperatures as high as 46 degrees Celsius have been measured in Grant's gazelles. The overheated body then cools down during the cold desert night， and indeed the temperature may fall unusually low by dawn， as low as 34 degrees Celsius in the camel. This is an advantage since the heat of the first few hours of daylight is absorbed in warming up the body， and an excessive buildup of heat does not begin until well into the day. Another strategy of large desert animals is to tolerate the loss of body water to a point that would be fatal for non-adapted animals. The camel can lose up to 30 percent of its body weight as water without harm to itself， whereas human beings die after losing only 12 to 13 percent of their body weight. An equally important adaptation is the ability to replenish this water loss at one drink. Desert animals can drink prodigious volumes in a short time， and camels have been known to imbibe over 100 liters in a few minutes. A very dehydrated person，on the other hand， cannot drink enough water to rehydrate at one session， because the human stomach is not sufficiently big and because a too rapid dilution of the body fluids causes death from water intoxication. The tolerance of water loss is of obvious advantage in the desert， as animals do not have to remain near a water hole but can obtain food from grazing sparse and far-flung pastures. Desert-adapted mammals have the further ability to feed normally when extremely dehydrated， it is a common experience in people that appetite is lost even under conditions of moderate thirst. 29. What is the main topic of the passage？ （A） Weather variations in the desert （B） Adaptations of desert animals （C） Diseased of desert animals （D） Human use of desert animals. 30. According to the passage， why is light coloring an advantage to large desert animals？ （A） It helps them hide from predators. （B） It does not absorb sunlight as much as dark colors. （C） It helps them see their young at night （D） It keeps them cool at night. 31. The word "maintaining" in line 4 is closest in meaning to （A） measuring （B） inheriting （C） preserving （D） delaying 32. The author uses of Grant's gazelle as an example of （A） an animal with a low average temperature （B） an animal that is not as well adapted as the camel （C） a desert animal that can withstand high body temperatures （D） a desert animal with a constant body temperature 33. When is the internal temperature of a large desert mammal lower？ （A） Just before sunrise （B） In the middle of the day （C） Just after sunset （D） Just after drinking 34. The word "tolerate" in line 13 is closest in meaning to （A） endure （B） replace （C） compensate （D） reduce 35. What causes water intoxication？ （A） Drinking too much water very quickly （B） Drinking polluted water （C） Bacteria in water （D） Lack of water. 36. What does the author imply about desert-adapted mammals？ （A） They do not need to eat much food. （B） They can eat large quantities quickly （C） They easily lose their appetites. （D） They can travel long distances looking for food. 37. Why does the author mention humans in the second paragraph？ （A） To show how they use camels. （B） To contrast them to desert mammals. （C） To give instructions about desert survival. （D） To show how they have adapted to desert life. 38. The word "obtain" in line 23 is closest in meaning to （A） digest （B） carry （C） save （D） get 39. Which of the following is NOT mentioned as an adaptation of large desert animals？ （A） Variation in body temperatures （B） Eating while dehydrated （C） Drinking water quickly （D） Being active at night.。
2021年11月6日托福阅读考试真题及答案
2021年11月6日托福阅读考试真题及答案准备托福的阅读考试，考生们别忘了阅读考试的真题。
以下是由小编为大家精心整理的“2021年11月6日托福阅读考试真题及答案”，来看一看吧。
2021年11月6日托福阅读考试真题及答案R1人工智能下棋R2地下水R3欧洲城市计划R4洋流R5惠特尼发明的轧棉机R6蛇的分布R7意大利文艺复兴时期的一种戏剧1.托福阅读考试时间及题目数量托福阅读一篇有几道题，新托福考试阅读有几篇的题目，要想在这个基础之上取得高分，我们首先要做的就是对这些题目有一个清晰的认知。
这些题型虽然是文章的基础，但是在考试中，对于文章的理解能力和做题的速度要求都是比较高的，所以我们需要掌握文章的结构。
在文章的基础上，我们要学会分析文章的结构和作者的观点，这样才能在文章的开头段落中找到出处。
这样我们就可以清晰明白文章的结构是什么。
我们在进行阅读的过程中，首先要知道这些文章的结构是什么，在文章的开头段，一篇文章的开头，一般会问一下文章的结构是什么，然后我们来看一下文章结构是什么。
2.托福阅读一篇有几道题托福阅读一篇有几道题，新托福考试阅读有几篇实用的文章，要不要做题？新托福阅读有几个题型，每题的标准题、数量大概在1500到5000字左右。
新托福阅读有三篇文章，每篇文章有1000词左右的长难句；新托福阅读有四篇，每篇文章约800词。
新托福阅读有3篇，每篇约1000词左右；新托福写作有4篇，每篇约1000字左右；新托福阅读有四套。
每篇文章长度不够，建议先收藏再阅读。
第一篇文章长度大概是1500到1500字左右，需要花上3-4天阅读，每篇文章大概700-800字，需要2-3小时写作和2-3篇。
新托福写作有4个题，每篇文章长度是1个小时，有5-5个题目。
新托福独立写作是3篇，每篇长度在800-1200 字左右。
1.托福阅读题型有哪些托福阅读题目类型，托福阅读考试有哪些题型是不是很难？一起看看吧！托福阅读备考建议1.首先，我们要了解阅读考试题型，然后再分析一下题型，这样才能对托福阅读有更深入的了解。
托福阅读真题第10套
第10套Individual Performance and the Presence of OthersParagraph1：A person's performance on tasks can be enhanced or impaired by the mere presence of others,and a person's behavior as part of a group can be quite different from the person's behavior when acting alone.1..The word enhanced in the passage is closest in meaning to○interrupted○improved○influenced○hurt2..What role does paragraph1play in the passage○It introduces a common opinion that the rest of the passage challenges on the basis of scientific evidence.○It explains why the passage focuses on actions people take individually rather than on actions people take as part of a group.○It offers a specific example of a general principle discussed in the rest of the passage.○It describes two phenomena,possible explanations of which are considered in the rest of the passage.Paragraph2：In certain cases,individual performance can be either helped or hindered by the physical presence of others.The term social facilitation refers to any effect on performance,whether positive or negative,that can be attributed to the presence of others.Research on this phenomenon has focused on two types of effects:audience effects(the impact of passive spectators on performance)and coaction effects(the effect on performance caused by the presence of other people engaged in the same task).3..According to paragraph2,the term"social facilitation"refers to the phenomenon that a person's performance○is intended to help someone○is influenced by the presence of other people○is evaluated by other people○has an effect on others working on the same taskParagraph3：In one of the first studies in social psychology,psychologist Norman Triplett looked at coaction effects.He had observed in official bicycle records that bicycle racers pedaled faster when they were pedaling against other racers than when they were racing against the clock.Was this pattern of performance peculiar to competitive bicycling Or was it part of a more general phenomenon whereby peoplework faster and harder in the presence of others than when performing alone Triplett set up a study in which he told40children to wind fishing reels as quickly as possible under two conditions:alone or in the presence of other children performing the same task.He found that the children worked faster when other reel turners were present than when they performed alone.4..The phrase peculiar to in the passage is closest in meaning to○damaging to○unique to○rare in○new in5..The study conducted by Norman Triplett described in paragraph3supported the hypothesis that○coaction effects are stronger on the performance of children than they are on the performance of adults○coaction effects are limited to situations in which the time taken for a task matters ○people perform better when they know that their performance is being measured by someone○people perform better in the presence of others who are doing the same thing they areParagraph4：Social psychologist Robert Zajonc proposed an explanation for these seemingly contradictory effects.He reasoned that we become aroused by the presence of others and that arousal facilitates the dominant response the one most natural to us. On simple tasks and on tasks at which we are skilled,the dominant response is to perform effectively.However,on tasks that are difficult or tasks we are just learning, the incorrect response(making a mistake or not performing effectively)is dominant. This reasoning accounts for the repeated findings that,in the presence of others, performance improves on tasks that people do easily but suffers on difficult tasks. Other researchers have suggested that concern over the observers'evaluation is what most affects people's performance,particularly if they expect a negative evaluation.6..According to paragraph4,Robert Zajonc proposed that whether the presence of others hurts or helps a person's performance is determined by○how skilled the observers are in the task that they are observing○how closely the person is being watched○whether or not the person finds the task difficult○whether or not the person likes the people who are watching7..According to paragraph4,if other people are present,a person's performance on a task that he or she is just learning would most likely be○somewhat worse than if no one else is there○somewhat better than if no one else is there○completely unaffected by the presence of those other people○dependent on the number of people who are presentParagraph5：What happens in cooperative tasks when two or more people are working together instead of competing Do they increase their effort or slack off Researcher Bibb Latan used the term social loafing to refer to people's tendency to exert less effort when working with others on a common task than when they work alone.Social loafing occurs in situations where no one person's contribution to the group can be identified and individuals are neither praised for a good performance nor blamed for a poor one.In one experiment,Latan and others asked male students to shout and clap as loudly as possible,first alone and then in groups.In groups of two,individuals made only71percent of the noise they had made alone;in groups of four,each student put forth51percent of his solo effort;and with six students,each made only a 40percent effort.8..The word exert in the passage is closest in meaning to○put forth○waste○demand○accept9..According to paragraph5,people tend to engage in social loafing when they○prefer to work alone○fear being blamed for a poor performance○believe that their individual performance will not be identified○desire to be loyal to their group10..Which of the following can be inferred from paragraph5about Bibb Latan¨¦'s research on social loafing○The less a person likes to work alone,the harder that person is likely to work as a member of a group.○The less a person contributes to a group,the more likely it is that person will be blamed if the group performs poorly.○The more people there are in a group,the more likely they are to compete with each other.○The fewer people there are in a group,the less likely it is that social loafing will occur.Paragraph6：Harkins and Jackson found that social loafing disappeared when participants in a group believed that each person's performance could be monitored and evaluated;indeed,even the idea that the group performance may be evaluated against some standard can be sufficient to eliminate the loafing effect.When a group is relatively small and group evaluation is important,some members will even expendextra effort if they know that some of their coworkers are unwilling,unreliable,or incompetent to perform well.Moreover,social loafing is unlikely when participants can evaluate their own individual contribution or when they have a personal stake in the outcome.It is also unlikely when participants feel that the task is challenging or when they are working with close friends or teammates.Some80experimental studies have been conducted on social loafing in diverse cultures.Based on evidence these studies have produced,social loafing probably occurs in almost all cultures.11..Which of the sentences below best expresses the essential information in the highlighted sentence in the passage Incorrect choices change the meaning in important ways or leave out essential information.○Social loafing does not occur when participants in the group believe that evaluating individual performance will improve the group's performance.○The loafing effect is eliminated if the members of the group accept the standard by which their performance and that of the group is evaluated.○Social loafing tends to disappear if the members of the group believe that their or the group's performance may be evaluated.○Researchers have found that when group members receive monitoring and evaluation of their performance,their performance improves.12..According to paragraph6,which of the following has NOT been shown to decrease social loafing○Participants know that fellow group members are willing,reliable,and competent.○The group's task is seen as a challenge.○Group members know and like each other.○Participants know that their group is being judged on its performance.13..Look at the four squares that indicate where the following sentence could be added to the passage.Paragraph6：Harkins and Jackson found that social loafing disappeared when participants in a group believed that each person's performance could be monitored and evaluated;indeed,even the idea that the group performance may be evaluated against some standard can be sufficient to eliminate the loafing effect.【】When a group is relatively small and group evaluation is important,some members will even expend extra effort if they know that some of their coworkers are unwilling, unreliable,or incompetent to perform well.（担心队友偷懒采取行动）【】Moreover, social loafing is unlikely when participants can evaluate their own individual contribution or when they have a personal stake in the outcome.【】It is also unlikely when participants feel that the task is challenging or when they are working with close friends or teammates.Some80experimental studies have been conducted on social loafing in diverse cultures.Based on evidence these studies have produced,social loafing probably occurs in almost all cultures.【】However,it appears to be most common in individualistic Western cultures such as that of the United States.Where would the sentence best fit Click on a square to add the sentence to the passage.14..Drag your choices to the spaces where they belong.To review the passage,click on View Text.Answer Choices○When people are present,the performance of individuals generally improves on tasks they already do well but worsens on tasks they generally do poorly.○Studies show that bicycle racers pedal faster when they are competing against other racers,but children wind fishing reels slower when in the presence of others than when alone.○People's performance on a task is more affected by the presence of others when those others are engaged in the same task than when the others are passive spectators.○When people work together on a common task but no one's contribution is measured,there is a tendency for individuals to work less hard than if they were working alone.○Social loafing decreases under certain conditions,such as when the performance of the group or its members is evaluated or when a positive outcome matters to the participants.○While social loafing occurs in almost all groups across cultures,the extent to which it occurs in any particular group depends on the individual personalities of the group's members.The Identification of the Genetic MaterialParagraph1：The history of biology is filled with incidents in which research on one specific topic has contributed richly to another,apparently unrelated area.Such a case is the work of Frederick Griffith,an English physician whose attempts to prevent the disease pneumonia led to the identification of the material in cells that contains genetic information the information that determines an organism's characteristic structure.In the1920s,Griffith was studying the bacterium Streptococcus pneumoniae,or pneumococcus,one of the organisms that cause pneumonia in humans. He was trying to develop a vaccine against this devastating illness.He was working with two strains of the bacteria pneumococcus.A bacterial strain is a population of cells descended from a single parent cell;strains differ in one or more inherited characteristics.Griffith's strains were designated S and R because,when grown in the laboratory,one produced shiny,smooth(S)colonies or groups of bacteria,and the other produced colonies that look rough(R).1..The word apparently in the passage is closest in meaning to○seemingly○surprisingly○relatively○previously2..According to paragraph1,Griffith experimented with strains of the pneumococcus bacteria because he wanted to discover which of the following○A strain of bacteria that could be used to develop a vaccine○How bacterial strains developed under laboratory conditions○Why the strains of bacteria differed in appearance○Which bacterial strains were most infectious in humansParagraph2：When the S strain was injected into mice,the mice became diseased. When the R strain was injected,the mice did not become diseased.Bacteria of the S strain are virulent(able to cause disease)because they are surrounded by a protective jelly-like coating that prevents the mouse's immune defense mechanisms from destroying the bacteria before they can multiply.The R strain lacks this coating. 3..Why does the author provide the information that The R strain lacks this coating○To provide an example of variations within strains of pneumococcus bacteria○To explain why the R strain is not able to cause disease○To suggest that the R strain has other ways to defend itself from immune defense mechanisms○To explain why mice became diseased when injected with the R strainstrainParagraph3：With the hope of developing a vaccine against pneumonia,Griffith injected some mice with heat-killed S pneumococci.These heat-killed bacteria did not produce infection.Griffith assumed the mice would produce antibodies to the bacteria that would allow them to fight the virulent form if they were exposed to it.However, when Griffith inoculated other mice with a mixture of living R bacteria and heat-killed S bacteria,to his astonishment,the mice became ill with pneumonia. When he examined blood from these mice,he found it full of living bacteria many with characteristics of the virulent S strain.Griffith concluded that,in the presence of the dead S pneumococci,some of the living R pneumococci had been transformed into virulent S-strain organisms.4..The word astonishment in the passage is closest in meaning to○alarm○surprise○disappointment○interest5..According to paragraph3,why did Griffith conclude from his experiment injecting both R and S strains pneumococci into mice that some of the R strain bacteriatransformed into disease-causing S strain pneumococci○All the living bacteria he found in the blood of the injected mice were S strain bacteria.○He already knew from earlier experiments that R strain pneumococci sometimes transform into S strain pneumococci.○He could tell from examining the bacteria under a microscope that some individual pneumococci cells had characteristics of both the S and R strains.○He observed living cells in the mice's blood with S strain characteristics,but the only living cells injected were R strain pneumococci.Paragraph4：Did this transformation of the bacteria depend on something the mouse did to the bacteria No.It was shown that simply putting living R and heat-killed S bacteria together in a test tube yielded the same transformation.Next it was discovered that a cell-free extract of heat-killed S cells also transformed R cells.(A cell-free extract contains all the contents of cells,but no intact cells.)This result demonstrated that some substance called at the time a chemical transforming principle from the extract of S pneumococci could cause a heritable change(a change that could be passed on to future generations)in the affected R cells.From these observations,some scientists concluded that this transforming material carried heritable information,and thus was the genetic material that scientists had been searching for.6..According to paragraph4,why was Griffith's experiment repeated in a test tube○To provide additional support for the transformation of R-strain into S-strain pneumococci○To establish whether or not the transformation of R cells was caused by something the mouse's body did○To determine why the S-strain pneumococci somehow survived if they were in the presence of the R-strain○To test the results of adding a cell-free extract to the mixture7..Which of the sentences below best expresses the essential information in the highlighted sentence in the passage Incorrect choices change the meaning in important ways or leave out essential information.○This result showed that the chemical transforming principle in S pneumococci was passed on to future generations of S pneumococci.○After exposure to the cell-free extract from the S pneumococci,R pneumococci strain cells acquired the ability to transform themselves into S pneumococci.○The transformation of R cells by a cell-free extract of S pneumococci demonstrated the existence of a chemical transforming principle that brought about heritable change.○This transformation showed that the characteristics that the S pneumococci possess are superior to the characteristics of R pneumococci.Paragraph5：The identification of the transforming material was a crucial step in the history of biology,accomplished over a period of several years by Oswald Avery and his colleagues at what is now Rockefeller University.They treated samples of the transforming extract in a variety of ways to destroy different types of substances proteins,nucleic acids,carbohydrates,and lipids and tested the treated samples to see if they had retained transforming activity.The answer was always the same:If the DNA(deoxyribo nucleic acid)in the extract was destroyed,transforming activity was lost;everything else could be eliminated without removing the transforming ability of the extract.As a final step,Avery,with Colin MacLeod and Maclyn McCarty,isolated virtually pure DNA from a sample of pneumococcal transforming extract and showed that it caused bacterial transformation.8..According to paragraph5,why did Oswald Avery and his colleagues treat the transforming extract in a variety of destructive ways○They hoped to destroy the virulent part of the transforming extract.○They wanted to identify the substance responsible for the transforming activity.○They wanted to identify which methods would destroy particular substances in the transforming extract.○They needed to determine which treatments were most successful in destroying DNA.9..The word virtually in the passage is closest in meaning to○perfectly○nearly○partially○relativelyParagraph6：In retrospect,the work of Avery,MacLeod,and McCarty,published in 1944,was a milestone in establishing that DNA is the genetic material.However,at the time,it had little impact on scientists'view about the physical basis of inheritance. The genetic material had to encode all the information needed to specify an organism, and the chemical complexity and diversity of proteins were known to be impressive. So during the first half of the twentieth century,the hereditary material was generally assumed to be a protein.Nucleic acids,by contrast,were known to have only a few components and seemed too simple to carry such complex information.10..The phrase In retrospect in the passage is closest in meaning to○By general agreement○In reality○Looking back○Practically speaking11..According to paragraph6,why did scientists continue to believe that the hereditary material was a protein○Scientists thought that the research of Avery and his colleagues provided insufficient information about the nature of DNA.○Scientists believed that only proteins were complex enough to carry genetic information.○Scientists thought Avery and his colleagues had little understanding of the physical basis of inheritance.○Scientists ignored important milestones that indicated the chemical complexity of DNA.12..Which of the following can be inferred from the passage about the transformed R-strain pneumococci○They had acquired the genetic information for producing a protective coating.○They were unable to cause transformation in other strains of pneumococci.○In the presence of heat-killed R-strain bacteria,they lost their virulence.○They did not multiply as quickly as nontransformed cells did.13..Look at the four squares that indicate where the following sentence could be added to the passage.WhyWhere would the sentence best fit Click on a square to add the sentence to the passage.此题被插入句不完整，无法做14..Drag your choices to the spaces where they belong.To review the passage,click on View Text.Answer Choices○From the1920s through1944,researchers used pneumococcus bacteria to discover the properties of DNA because the bacteria was relatively simple,having only two strains.○Frederick Griffith discovered that a nonvirulent strain of bacteria could be transformed into a virulent strain by being exposed to dead cells from the virulent strain.○By selectively destroying various substances in the cells of pneumococci bacteria, Oswald Avery and his colleagues identified DNA as the substance that caused bacterial transformation.○Oswald Avery injected the combination of heat-killed,virulent cells and nonvirulent cells into mice because he hoped this would lead to a vaccine for pneumonia.○Avery and his colleagues were able to isolate Griffith's transforming principle by injecting mice with the extract that contained the transforming principle.○Scientists did not initially recognize the importance of the discovery that DNA could cause genetic transformation because the hereditary material was assumed to be a protein.How Birds Acquire Their SongsParagraph1：Most songbirds hatch in the spring and then merely listen to the songs of adult male birds until sometime in late summer or autumn,when the adults stop singing,not to resume until the end of winter the following year.It is usually male birds that are doing the singing in northern latitudes,though female singing is common in the tropics.Many young songbirds do no singing of their own until nearly a year after their birth.With the coming of their second spring,their testosterone levels rise and this in turn prompts them to begin singing,with their song development following a predictable pattern over a period of weeks.At first,their songs may be a quiet,jumbled series of chirps and whistles.Over time,young birds begin to use the syllables of their species'songs,though the order in which these syllables appear will vary.Finally,their songs crystallize(take form)into the clear, orderly song of their species.1..The word prompts in the passage is closest in meaning to○stimulates○strengthens○prepares○forces2..According to paragraph1,which of the following is true of male songbirds in the first year of life○They do not begin singing until sometime in late summer or autumn.○They begin singing earlier in the tropics than in northern latitudes.○They listen to songs of adults for an extended period of time before they themselves sing.○Their earliest songs contain the characteristic order of syllables for their species. Paragraph2：There is a songbird,called the white-crowned sparrow,whose song development follows this general script while providing some variations that are instructive about the interplay of internal influences and learning in birdsong. White-crowned sparrows raised in captivity will follow the pattern of song acquisition just described:they listen to songs in their first spring and summer but do not themselves begin singing until they are perhaps six months old.In nature,however, things are different.For example,the white-crown found year-round in the San Francisco area sings a particular regional variant or dialect of the basic white-crown song and begins singing within six weeks or so of birth and may progress to fully crystallized song as early as three months after birth,meaning about September. 3..The word particular in the passage is closest in meaning to○popular○specific○well-known○complexParagraph3：Why would there be a difference between singing in nature and singing in the laboratory█The pressures of nature.█As year-round residents,the San Francisco white-crowns do not fly into an area in spring and then establish territories.█Rather,they establish territories as early as their first autumn.█One function of birdsong is to announce,I have a territory here.Young white-crowns,like many species,will extend this practice by counter singing,meaning a male,upon hearing the song of a nearby male of its species,will repeat the exact song he has heard,thus setting off a back-and-forth duel,like two children in an argument,each of them saying,I'm still here.4..According to paragraphs2and3,all of the following are true about San Francisco white-crowns EXCEPT:○They do not migrate to another area in spring to establish territories.○They completely acquire their song as early as three months after birth.○They establish territories in their first autumn.○They begin singing much earlier in captivity than they do in nature.5..In paragraph3,the author points out that San Francisco white-crowns establish their territories in the area in which they are born in order to explain which of the following○Why they practice counter-singing○Why they get better territories than white-crowns that establish territories in areas in which they are not born○Why they are more competitive than white-crowns raised in captivity○Why in their natural habitat they start singing earlier than white-crowns raised in captivity6..Which of the sentences below best expresses the essential information in the highlighted sentence in the passage Incorrect choices change the meaning in important ways or leave out essential information.○Many species,including white-crowns,use a dueling technique to spread the practice of countersinging to other males of the species.○A young white-crown male uses countersinging to learn the songs of nearby males by repeatedly practicing them.○A young white-crown male engages in countersinging with a nearby male in order to assert its continuing presence in its territory.○Young white-crown males,much like young children,are competitive.Paragraph4：Internal influences and learning are also on display in white-crowns in the way they acquire their songs.We know that there is often a so-called sensitive period for animal learninga kind of window in which an animal is able to acquire certain skills or information.In laboratory-raised white-crowns,the sensitive periodstarts at about ten days after birth and extends until about fifty days after birth.A white-crown that became deaf prior to the opening of the sensitive period eventually will sing individual notes,but it will never learn to sing its species'song.Meanwhile, white-crowns that are raised in nature through part of their sensitive period and then taken to the laboratory will begin singing the following winter in the dialect of the area in which they were hatched.Two points are worth observing about this.First, note that these birds are learning the white-crown song months before they ever start practicing it themselves.Indeed,the learning window will be closed completely(in their first summer)before these lab-reared birds ever sing a note(the following winter).Second,learning is important enough in song acquisition that white-crowns learn not just their species'song but local or regional variants of it,which they are able to recall months after last hearing them.7..The word eventually in the passage is closest in meaning to○generally○probably○in the end○at the least8..The word recall in the passage is closest in meaning to○repeat○remember○recognize○complete9..According to paragraph4,white-crowns with which of the following life histories demonstrate the importance of memory in song acqusition○White-crowns that learn a dialect before they learn their standard song○White-crowns that first heard a dialect of the white-crown song before they were ten days old○White-crowns that were moved from where they were born to a different region during their sensitive period○White-crowns that were raised in nature through part of their sensitive period and then transferred to the laboratory10..What can be inferred from paragraph4about the local dialect of the species song that a white-crown sings after the sensitive period has closed○Those dialects must be learned during the sensitive period and are retained thereafter even in new environments.○Those dialects can be learned after the sensitive period if they are common in the local area.○Those dialects can be learned after the sensitive period if the birds are raised in the laboratory.○Those dialects are learned during the sensitive period and afterward used only when。
1997年1月托福阅读全真试题
1997年1月托福阅读全真试题1997年1月托福阅读全真试题Question 1-8Both the number and the percentage of people in theUnited States involved in nonagricultural pursuits expanded rapidly during the half century following the Civil War, with some of the most dramatic increases occurring in the domainsof transportation, manufacturing, and trade and distribution.The development of the railroad and telegraph systems duringthe middle third of the nineteenth century led to significant improvements in the speed, volume, and regularity of shipmentsand communications, making possible a fundamentaltransformation in the production and distribution of goods.In agriculture, the transformation was marked by theemergence of the grain elevators, the cotton presses, thewarehouses, and the commodity exchanges that seemed to somany of the nation's farmers the visible sign of a vast conspiracyagainst them. In manufacturing, the transformation wasmarked by the emergence of a "new factory system" in which plants became larger, more complex, and more systematicallyorganized and managed. And in distribution, the transformationwas marked by the emergence of the jobber, the wholesaler,and the mass retailer. These changes radically alteredthe nature of work during the half century between 1870 and 1920.To be sure, there were still small workshops, whereskilled craftspeople manufactured products ranging from news-papers to cabinets to plumbing fixtures. There were the sweatshopsin city tenements, where groups of men and women inhousehold settings manufactured clothing or cigars on a piece-work basis. And there were factories in occupations such as metalwork where individual contractors presided over what were essentially handicraft proprietorships that coexisted withina single buildings. But as the number of wage earners inmanufacturing rose from 2.7 million in 18。
2017月7月01日托福真题回顾.doc
第3段Jellyfish是一种osmooconformers,增加体内水分调节盐分的含量
第4段Osmoiregulators调节的方法更多，比如可以释放和吸收周围的盐分，比如crab,还有 的生物既是Osmoconformers,乂是osmoregulators
词汇题:
Specific= typical
Focus on = dependent on
Imminent = future
Refinement = improvement
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今天的剩下的考的10篇文章
5.英国工业
6.家庭纺织业发展
7.动物的智பைடு நூலகம்测试
8.地球起源
9.欧洲的军队贸易
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词汇题:
1 .exploit二take the advantage of
2.Optimal=favorable
3.Excrete=release
4.Stationary=fixed
Passage Four
学科分类：Geology
题目：How to Predict Earthquake
10.松鼠
11.turtles晒太阳的时长和季节觅食产卵的关系
12.英国制造业发展
13.欧洲建筑风格的变迁
14.weather forecast
2017年07月01日托福听力考试回忆
Conversation 1
话题分类：student and anthropology professor
托福考试阅读历年真题练习
托福考试阅读历年真题练习托福考试阅读历年真题练习学习如着起之茴，不见其增，日有所长。
下面是店铺为大家搜索整理的托福考试阅读历年真题练习，希望大家能有所收获，Questions 20-22Many prehistoric people subsisted as hunters and gatherers. Undoubtedly, game animals, including some very large species, provided major components of human diets. An important controversy centering on the question of human effects on prehistoric wildlife.Line concerns the sudden disappearance of so many species of large animals at or near the end of the Pleistocene epoch. Most paleontologists suspect that abrupt changes in climate led to the mass extinctions. Others, however, have concluded that prehistoric people drove many of those species to extinction through overhunting. In their "Pleistocene overkill prehistoric peoples in North and South America and the time during which mammoths, giant ground sloths, the giant bison, and numerous other large mammals became extinct.Perhaps the human species was driving others to extinction long before the dawn of history.Hunter-gatherers may have contributed to Pleistocene extinctions in more indirect ways. Besides overhunting, at least three other kinds of effects have been suggested:direct competition, imbalances between competing species of game animals, and early agricultural practices. Direct competition may have brought about the demise of large carnivores such as the saber-toothed cats. These animals simply may have been unable to compete with the increasinglysophisticated hunting skills of Pleistocene people. Human hunters could have caused imbalances among game animals, leading to the extinctions of species less able to compete. When other predators such as the gray wolf prey upon large mammals, they generally take high proportions of each year s crop of young. Some human hunters, in contrast, tend to take the various age-groups of large animals in proportion to their actual occurrence. If such hunters first competed with the larger predators and then replaced them. they may have allowed more young to survive each year, gradually increasing the populations of favored species As these populations expanded, they in turn may have competed with other game species for the same environmental niche, forcing the less hunted species into extinction. This theory, suggests that human hunters played an indirect role in Pleistocene extinctions by hunting one species more than another.20. What does the passage mainly discuss?(A) The effects of human activities on prehistoric wildlife(B) The origins of the hunter-gatherer way of life(C) The diets of large animals of the Pleistocene epoch(D) The change in climate at the end of the Pleistocene epoch21. The word "Undoubtedly" in line I is closest in meaning to(A) occasionally(B) unexpectedly(C) previously(D) certainly22. The word "components" in line 2 is closest in meaning to(A) parts(B) problems(C) changes(D) varieties。
2021年托福阅读回忆和解析参考答案
2021年托福阅读真题最新最全
*欧阳光明*创编2021.03.07托福阅读真题3欧阳光明(2021.03.07)PASSAGE 3The Native Americans of northern California were highly skilled at basketry, using thereeds,grasses, barks, and roots they found around them to fashion articles of all sorts and sizesnot only trays, containers, and cooking pots, but hats, boats, fish traps, baby carriers, andceremonialobjects.Of all these experts, none excelled the Pomo — a group who lived on or near the coastduring the 1800's, and whose descendants continue to live in parts of the same region to thisday. They made baskets three feet in diameter and others no bigger than a thimble. The Pomopeople were masters of decoration. Some of their baskets were*欧阳光明*创编completely covered with shell pendants; others with feathers that made the baskets' surfaces as soft as the breasts of birds.Moreover, the Pomo people made use of more weaving techniques than did their neighbors.Most groups made all their basketwork by twining —the twisting of a flexible horizontal material,called a weft, around stiffer vertical strands of material, the warp. Others depended primarily oncoiling —a process in which a continuous coil of stiff material is held inthe desired shape withtight wrapping of flexible strands. Only the Pomo people used both processes with equal easeand frequency. In addition, they made use of four distinct variations onthe basic twining process,often employing more than one of them in a single article.Although a wide variety of materials was available, the Pomo people used only a few. Thewarp was always made of willow, and the most commonly used weft was sedge root, a woodyfiber that could easily be separated into strands no thicker than a thread. For color, the Pomopeople used the bark of redbud for their twined work and dyed bullrush root for black incoiled work. Though other materials were sometimes used, these four were the staples in theirfinest basketry.If the basketry materials used by the Pomo people were limited, the designs wereamazingly varied. Every Pomo basketmaker knew how to produce from fifteen to twentydistinct patterns that could be combined in a number of different ways.1. What best distinguished Pomo baskets from baskets of other groups?(A) The range of sizes, shapes, and designs(B) The unusual geometric(C) The absence of decoration(D) The rare materials used2. The word "fashion" in line 2 is closest in meaning to (A) maintain(B) organize(C) trade(D) create3. The Pomo people used each of the following materials to decorate baskets EXCEPT(A) shells(B) feathers(C) leaves(D) bark4. What is the author's main point in the second paragraph?(A) The neighbors of the Pomo people tried to improve on the Pomo basket weaving techniques.(B) The Pomo people were the most skilled basket weavers in their region.(C) The Pomo people learned their basket weaving techniques from other Native Americans.(D) The Pomo baskets have been handed down for generations.5. The word "others " in line 9 refers to(A) masters(B) baskets(C) pendants(D) surfaces6. According to the passage , a weft is a(A) tool for separating sedge root(B) process used for coloring baskets(C) pliable maternal woven around the warp(D) pattern used to decorate baskets7. According to the passage , what did the Pomo people use as the warp in their baskets?(A) bullrush(B) willow(C) sedge(D) redbud8. The word "article" in line 17 is close in meaning to(A) decoration(B) shape(C) design(D) object9. According to the passage . The relationship between redbud and twining is most similar to the relationship between(A) bullrush and coiling(B) weft and warp(C) willow and feathers(D) sedge and weaving10. The word "staples" in line 23 is closest in meaning to(A) combinations(B) limitations(C) accessories(D) basic elements11. The word "distinct" in lime 26 is closest in meaning to(A) systematic(B) beautiful(C) different(D) compatible12. Which of the following statements about Pomo baskets can be best inferred from the passage ?(A) Baskets produced by other Native Americans were less varied in design than those of the Pomo people.(B) Baskets produced by Pomo weavers were primarily for ceremonial purposes.(C) There were a very limited number of basketmaking materials available to the Pomo people.(D) The basketmaking production of the Pomo people has increased over the years.PASSAGE 4The term "Hudson River school" was applied to the foremost representatives ofnineteenth century North American landscape painting. Apparently unknown during the goldendays of the American landscape movement, which began around 1850 and lasted until the late1860's, the Hudson River school seems to have emerged in the 1870's as a direct result of thestruggle between the old and the new generations of artists, each to assert its own style as therepresentative American art. Theolder painters, most of whom were born before 1835, practicedin a mode often selftaught and monopolized by landscape subject matter and were securelyestablished in and fostered by the reigning American art organization, the National Academy ofDesign. The younger painters returning home from training in Europe worked more with figuralsubject matter and in a bold and impressionistic technique; their prospectsfor patronage in theirown country were uncertain, and they sought to attract it by attaining academic recognition inNew York. One of the results of the conflict between the two factionswas that what in previousyears had been referred to as the "American", "native", or, occasionally, "New York" school —themost representative school of American art in any genre —had by 1890 become firmlyestablished in the minds of critics and public alike as the Hudson River school.The sobriquet was first applied around 1879. While it was not intended as flattering, it washardly inappropriate. The Academicians at whom it was aimed had worked and socialized inNew York, the Hudson's port city, and had painted the river and its shores with varyingfrequency. Most important, perhaps, was that they had all maintained with a certain fidelity amanner of technique and composition consistent with those of America's first popular landscape artist, Thomas Cole,who built a career painting the CatskillMountain scenerybordering the Hudson River. A possible implication in the term appliedto the group oflandscapists was that many of them had, like Cole,lived on or near the banks of the Hudson.Further, the river had long served as the principal route toother sketching grounds favored bythe Academicians, particularly the Adirondacks and the mountains of Vermont and NewHampshire.1. What does the passage mainly discuss?(A) The National Academy of Design(B) Paintings that featured the Hudson River(C) North American landscape paintings(D) The training of American artists in European academies2. Before 1870, what was considered the most representative kind of American painting?(A) Figural painting(B) Landscape painting(C) Impressionistic painting(D) Historical painting3. The word "struggle" in line 5 is closest in meaning to(A) connection(B) distance(C) communication(D) competition4. The word "monopolized" in line 7 is closest in meaning to(A) alarmed(B) dominated(C) repelled(D) pursued5. According to the passage , what was the function of the National Academy of Design forthe painters born before 1835?(A) It mediated conflicts between artists.(B) It supervised the incorporation of new artistic techniques.(C) It determined which subjects were appropriate.(D) It supported their growth and development.6. The word "it" in line 12 refers to(A) matter(B) technique(C) patronage(D) country7. The word "factions" in line 13 is closest in meaning to(A) sides(B) people(C) cities(D) images8. The word "flattering" in line 18 is closest in meaning to(A) expressive(B) serious(C) complimentary(D) flashy9. Where did the younger generation of painters receive its artistic training?(A) In Europe(B) In the Adirondacks(C) In Vermont(D) In New Hampshire答案：PASSAGE 3 BDCBB CBDAD CA PASSAGE 4 BBDBD CACA。
2021年托福阅读模拟试题及答案(卷八)
2021年托福阅读模拟试题及答案（卷八）The canopy, the upper level of the trees in the rain forest, holds a plethora of climbingmammals of moderately large size, which may include monkeys, cats, civets, andporcupines. Smaller species, including such rodents as mice and small squirrels, are notLine as prevalent overall in high tropical canopies as they are in most habitats globally.(5) Small mammals, being warm blooded, suffer hardship in the exposed and turbulentenvironment of the uppermost trees. Because a small body has more surface area perunit of weight than a large one of similar shape, it gains or loses heat more swiftly.Thus, in the trees, where shelter from heat and cold may be scarce and conditions mayfluctuate, a small mammal may have trouble maintaining its body temperature.(10) Small size makes it easy to scramble among twigs and branches in the canopy forinsects, flowers, or fruit, but small mammals are surpassed, in thecompetition forfood, by large ones that have their own tactics for browsing among food-rich twigs.The weight of a gibbon (a small ape) hanging below a branch arches the terminalleaves down so that fruit-bearing foliage drops toward the gibbon's face. Walking or(15) leaping species of a similar or even larger size access the outer twigs either by snapping offand retrieving the whole branch or by clutching stiff branches with the feet or tail andplucking food with their hands.Small climbing animals may reach twigs readily, but it is harder for them than forlarge climbing animals to cross the wide gaps from on tree crown to the next that(20) typify the high canopy. A macaque or gibbon can hurl itself farther than a mouse can: itcan achieve a running start, and it can more effectively use a branch as a springboard,even bouncing on a limb several times before jumping. The forward movement of a smallanimal is seriously reduced by the air friction against the relatively large surfacearea of its body. Finally, for the many small mammals that supplement their insect(25) diet with fruits or seeds, an inability to span open gaps between tree crowns may beproblematic, since trees that yield these foods can be sparse.2. Which of the following animals is less common in the upper canopy than in other environments?(A) Monkeys(B) Cats(C) Porcupines(D) Mice答案：DThe geology of the Earth's surface is dominated by the particular properties of water.Present on Earth in solid, liquid, and gaseous states, water is exceptionally reactive. Itdissolves, transports, and precipitates many chemical compounds and is constantlyLine modifying the face of the Earth.(5) Evaporated from the oceans, water vapor forms clouds, some ofwhich are transportedby wind over the continents. Condensation from the clouds provides the essential agent ofcontinental erosion: rain. Precipitated onto the ground, the water trickles down to formbrooks, streams, and rivers, constituting what are called the hydrographic network. Thisimmense polarized network channels the water toward a single recepatcle: an ocean.(10) Gravity dominates this entire step in the cycle because water tends to minimize itspotential energy by running from high altitudes toward the reference point, that is, sealevel.The rate at which a molecule of water passes through the cycle is not random but is ameasure of the relative size of the various reservoirs. If we define residence time as the(15) average time for a water molecule to pass throught one of the three reservoirs—atmosphere, continent, and ocean—we see that the times are very different. A watermolecule stays, on average, eleven days in the atmosphere, one hundred years on acontinent and forty thousand years in the ocean. This last figure shows the importance ofthe ocean as the principal reservoir of the hydrosphere but also the rapidity of water(20) transport on the continents.A vast chemical separation process takes places during the flow of water over thecontinents. Soluble ions such as calcium, sodium, potassium, and some magnesium aredissolved and transported. Insoluble ions such as aluminum, iron, and silicon stay wherethey are and form the thin, fertile skin of soil on which vegetation can grow. Sometimes(25) soils are destroyed and transported mechanically during flooding. The erosion of thecontinents thus results from two closely linked and interdependent processes, chemicalerosion and mechanical erosion. Their respective interactions and efficiency depend ondifferent factors.8. All of the following are example of soluble ions EXCEPT(A) magnesium(B) iron(C) potassium(D) calcium答案：BPeople appear to be born to compute. The numerical skill of children develop so early and so inexorably that it is easy to imagine an internal clock of mathematical maturity guiding their growth. Not long after learning to walk and talk, they can set the table with impressive accuracy——one plate, one knife, one spoon, one fork, for each of the five chairs. Soon they are capable of noting that they have placed five knives, spoons, and forks on the table and, a hit later, that this amounts to fifteen pieces of silverware. Having thus mastered addition, they move on to subtraction. It seems almost reasonable to expect that if a child were secluded on a desert island at birth and retrieved seven years later, he or she could enter a second-grade mathematics class without any serious problems of intellectual adjustment.Of course, the truth is not so simple. This century, the work of cognitive psychologists has illuminated the subtle forms of daily learning on which intellectual progress depends. Children were observed as they slowly grasped——or ,as the case might be, bumped into——concepts that adults take forgranted, as they refused, for instance, to concede that quantity is unchanged as water pours from a short stout glass into a tall thin one. Psychologists have since demonstrated that young children, asked to count the pencils in a pile, readily report the number of blue or red pencils, but must be coaxed into finding the total. Such studies have suggested that the rudiments of mathematics are mastered gradually, and with effort. They have also suggested that the very concept of abstract numbers——the idea of a oneness, a twoness, a threeness that applies to any class of objects and is a prerequisite for doing anything more mathematically demanding than setting a table——is itself far from innate.31.What does the passage mainly discuss?(A) Trends in teaching mathematics to children(B) The use of mathematics in child psychology(C) The development of mathematical ability in children(D) The fundamental concepts of mathematics that children must learn32.It can be inferred from the passage that children normally learn simple counting(A) soon after they learn to talk(B) by looking at the clock(C) when they begin to be mathematically mature(D) after they reach second grade in school33.The word "illuminated in line 11 is closest in meaning to(A) illustrated(B) accepted(C) clarified(D) lighted34 . The author implies that most small children believe that the quantity of water changes when it is transferred to a container of a different(A) color(B) quality(C) weight(D) shape35 .According to the passage, when small children were asked to count a pile of red and blue pencils they(A) counted the number of pencils of each color(B) guessed at the total number of pencils (C) counted only the pencils of their favorite color(D) subtracted the number of red pencils from the number of blue pencilsThe war for independence from Britain was a long and economically costly conflict. The New England fishing industry was temporarily destroyed, and the tobacco colonies in the South were also hard hit. The trade in imports was severely affected, since the war was fought against the country that had previously monopolized the colonies’supply of manufactured goods. The most serious consequences were felt in the cities, whose existence depended on commercial activity. Boston, New York, Philadelphia, and Charleston were all occupied for a time by British troops. Even when the troops had left, British ships lurked in the harbors and continued to disrupt trade.American income from shipbuilding and commerce declined abruptly, undermining the entire economy of the urban areas. The decline in trade brought a fall in the American standard of living. Unemployed shipwrights, dock laborers, and coopers drifted off to findwork on farms and in small villages. Some of them joined the Continental army, or if they were loyal to Britain, they departed with the British forces. The population of the New York City declined from 21,000 in 1774 to less than half that number only nine years later in 1783.The disruptions produced by the fighting of the war, by the loss of established markets for manufactured goods, by the loss of sources of credit, and by the lack of new investment all created a period of economic stagnation that lasted for the next twenty years.1.Why does the author mention the fishing industry and the tobacoo colonies?A. to show how the war for independence affected the economyB. to compare the economic power of two different regionsC. to identify the two largest commercial enterprises in AmericaD. to give examples of industries controlled by British forces2. Why does the author mention the population of New York City in paragraph 2?A. to show that half of New York remained loyal to BritainB. to compare New York with other cities occupied during the warC. to emphasize the great short-term cost of the war for New YorkD. to illustrate the percentage of homeless people in New York答案：1.A2.COne’s style of the dress reveals the human obsession with both novelty and tradition. People use clothing to declare their membership in a particular social group; however, the rules for what is acceptable dress for that group may change. In affluent societies, this changing of the rules is the driving force behind fashions. By keeping up with fashions, that is, by changing their clothing style frequently but simultaneously, members of a group both satisfy their desire for novelty and obey the rules, thus demonstrating their membership in the group.There are some interesting variations regarding individual status. Some people, particularly in the West, consider themselves of such high status that they do not need to display it with their clothing. For example, many wealthy people in the entertainment industry appear in very casual clothes, such as the worn jeans and work boots of a manual laborer. However, it is likely that a subtle but important signal, such as an expensive wristwatch, will prevail over the message of the casual dress. Such an inverted status display is most likely to occur where the person’s high status is conveyed in ways other than with clothing, such as havinga famous face.1.According to the author, fashions serve all the following purposes EXCEPTA.satisfying an interest in noveltyB.signaling a change in personal beliefsC.displaying membership in a social groupD.following traditional rules2.Why does the author discuss individual status in paragraph 2?A.To state that individuals status is not important in the WestB.To argue that individuals need not obey every fashion ruleC.To contrast the status of entertainers with that of manual laborersD.To explain how high status may involve an inverted status display答案：1.B2.DDESERT FORMATIONThe deserts, which already occupy approximately a fourth of the Earth's land surface, have in recent decades been increasing at an alarming pace. The expansion of desertlike conditions into areas where they did not previously exist is called desertification. It has been estimated that an additional one-fourth of the Earth's land surface is threatened by this process.Desertification is accomplished primarily through the loss of stabilizing natural vegetation and the subsequent accelerated erosion of the soil by wind and water. In some cases the loose soil is blown completely away, leaving a stony surface. In other cases, the finer particles may be removed, while the sand-sized particles are accumulated to form mobile hills or ridges of sand.Even in the areas that retain a soil cover, the reduction of vegetation typically results in the loss of the soil's ability to absorb substantial quantities of water. The impact of raindrops on the loose soil tends to transfer fine clay particles into the tiniest soil spaces, sealing them and producing a surface that allows very little water penetration. Water absorption is greatly reduced; consequently runoff is increased, resulting in accelerated erosion rates. The gradual drying of the soil caused by its diminished ability to absorb water results in the further loss of vegetation, so that a cycle of progressive surface deterioration is established.In some regions, the increase in desert areas is occurring largely as the result of a trend toward drier climatic conditions. Continued gradual global warming has produced an increase in aridity for some areas over the past few thousand years. The process may be accelerated in subsequent decades if global warming resulting from air pollution seriously increases.There is little doubt, however, that desertification in most areas results primarily from human activities rather than natural processes. The semiarid lands bordering the deserts exist in a delicate ecological balance and are limited in their potential to adjust to increased environmental pressures. Expanding populations are subjecting the land to increasing pressures to provide them with food and fuel. In wetperiods, the land may be able to respond to these stresses. During the dry periods that are common phenomena along the desert margins, though, the pressure on the land is often far in excess of its diminished capacity, and desertification results.Four specific activities have been identified as major contributors to the desertification processes: overcultivation, overgrazing, firewood gathering, and overirrigation. The cultivation of crops has expanded into progressively drier regions as population densities have grown. These regions are especially likely to have periods of severe dryness, so that crop failures are common. Since the raising of most crops necessitates the prior removal of the natural vegetation, crop failures leave extensive tracts of land devoid of a plant cover and susceptible to wind and water erosion.The raising of livestock is a major economic activity in semiarid lands, where grasses are generally the dominant type of natural vegetation. The consequences of an excessive number of livestock grazing in an area are the reduction of the vegetation cover and the trampling and pulverization of the soil. This is usually followed by the drying of the soil and accelerated erosion.Firewood is the chief fuel used for cooking and heating in many countries. The increased pressures of expanding populations have led to the removal of woody plants so that many cities and towns aresurrounded by large areas completely lacking in trees and shrubs. The increasing use of dried animal waste as a substitute fuel has also hurt the soil because this valuable soil conditioner and source of plant nutrients is no longer being returned to the land.The final major human cause of desertification is soil salinization resulting from overirrigation. Excess water from irrigation sinks down into the water table. If no drainage system exists, the water table rises, bringing dissolved salts to the surface. The water evaporates and the salts are left behind, creating a white crustal layer that prevents air and water from reaching the underlying soil.The extreme seriousness of desertification results from the vast areas of land and the tremendous numbers of people affected, as well as from the great difficulty of reversing or even slowing the process. Once the soil has been removed by erosion, only the passage of centuries or millennia will enable new soil to form. In areas where considerable soil still remains, though, a rigorously enforced program of land protection and cover-crop planting may make it possible to reverse the present deterioration of the surface.Paragraph 1: The deserts, which already occupy approximately a fourth of the Earth's land surface, have in recent decades been increasing at an alarming pace. The expansion of desertlike conditions into areas where they did not previously exist is called desertification. Ithas been estimated that an additional one-fourth of the Earth's land surface is threatened by this process.1. The word threatened in the passage is closest in meaning to○Restricted○Endangered○Prevented○RejectedParagraph 3: Even in the areas that retain a soil cover, the reduction of vegetation typically results in the loss of the soil's ability to absorb substantial quantities of water. The impact of raindrops on the loose soil tends to transfer fine clay particles into the tiniest soil spaces, sealing them and producing a surface that allows very little water penetration. Water absorption is greatly reduced; consequently runoff is increased, resulting in accelerated erosion rates. The gradual drying of the soil caused by its diminished ability to absorb water results in the further loss of vegetation, so that a cycle of progressive surface deterioration is established.2. According to paragraph 3, the loss of natural vegetation has which of the following consequences for soil?○Increased stony content○Reduced water absorption○Increased numbers of spaces in the soil○Reduced water runoffParagraph 5: There is little doubt, however, that desertification in most areas results primarily from human activities rather than natural processes. The semiarid lands bordering the deserts exist in a delicate ecological balance and are limited in their potential to adjust to increased environmental pressures. Expanding populations are subjecting the land to increasing pressures to provide them with food and fuel. In wet periods, the land may be able to respond to these stresses. During the dry periods that are common phenomena along the desert margins, though, the pressure on the land is often far in excess of its diminished capacity, and desertification results.3. The word delicate in the passage is closest in meaning to○Fragile○Predictable○Complex○Valuable4. According to paragraph 5, in dry periods, border areas have difficulty○Adjusting to stresses created by settlement○Retaining their fertility after desertification○Providing water for irrigating crops○Attracting populations in search of food and fuelParagraph 6: Four specific activities have been identified as major contributors to the desertification processes: overcultivation, overgrazing, firewood gathering, and overirrigation. The cultivation of crops has expanded into progressively drier regions as population densities have grown. These regions are especially likely to have periods of severe dryness, so that crop failures are common. Since the raising of most crops necessitates the prior removal of the natural vegetation, crop failures leave extensive tracts of land devoid of a plant cover and susceptible to wind and water erosion.5. The word progressively in the passage is closest in meaning to○Openly○Impressively○Objectively○Increasingly6. According to paragraph 6, which of the following is often associated with raising crops?○Lack of proper irrigation techniques○Failure to plant crops suited to the particular area○Removal of the original vegetation○Excessive use of dried animal waste7. The phrase devoid of in the passage is closest in meaning to○Consisting of○Hidden by○Except for○Lacking inParagraph 9: The final major human cause of desertification is soil salinization resulting from over irrigation. Excess water from irrigation sinks down into the water table. If no drainage system exists, the water table rises, bringing dissolved salts to the surface. The water evaporates and the salts are left behind, creating a white crustal layer that prevents air and water from reaching the underlying soil.8. According to paragraph 9, the ground’s absorption of excess water is a factor in desertification because it can○Interfere with the irrigation of land○Limit the evaporation of water○Require more absorption of air by the soil○Bring salts to the surface9. All of the following are mentioned in the passage as contributing to desertification EXCEPT○Soil erosion○Global warming○Insufficient irrigation○The raising of livestockParagraph 10: The extreme seriousness of desertification resultsfrom the vast areas of land and the tremendous numbers of people affected, as well as from the great difficulty of reversing or even slowing the process. Once the soil has been removed by erosion, only the passage of centuries or millennia will enable new soil to form. In areas where considerable soil still remains, though, a rigorously enforced program of land protection and cover-crop planting may make it possible to reverse the present deterioration of the surface.10. Which of the sentences below best expresses the essential information in the highlighted sentence in the passage?Incorrect choices change the meaning in important ways or leave out essential information.○Desertification is a significant problem because it is so hard to reverse and affects large areas of land and great numbers of people.○Slowing down the process of desertification is difficult because of population growth that has spread over large areas of land.○The spread of deserts is considered a very serious problem that can be solved only if large numbers of people in various countries are involved in the effort.○Desertification is extremely hard to reverse unless the population is reduced in the vast areas affected.11. It can be inferred from the passage that the author most likely believes which of the following about the future of desertification?Governments will act quickly to control further desertification.The factors influencing desertification occur in cycles and will change in the future.Desertification will continue to increase.Desertification will soon occur in all areas of the world.Paragraph 7: The raising of livestock is a major economic activity in semiarid lands, where grasses are generally the dominant type of natural vegetation. The consequences of an excessive number of livestock grazing in an area are the reduction of the vegetation cover and the trampling and pulverization of the soil. This is usually followed by the drying of the soil and accelerated erosion.12. Look at the four squares [] that indicate where the following sentence can be added to the passage.This economic reliance on livestock in certain regions makes large tracts of land susceptible to overgrazing.Where would the sentence best fit?13-14. Directions: An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some answer choices do not belong in the summary because they express ideas that are not presented in the passage or are minor ideas in the passage. This question is worth 2 points.Many factors have contributed to the great increase in desertification in recent decades.Answer Choices1. Growing human populations and the agricultural demands that come with such growth have upset the ecological balance in some areas and led to the spread of deserts.2. As periods of severe dryness have become more common, failures of a number of different crops have increased.3. Excessive numbers of cattle and the need for firewood for fuel have reduced grasses and trees, leaving the land unprotected and vulnerable.4. Extensive irrigation with poor drainage brings salt to the surface of the soil, a process that reduces water and air absorption.5. Animal dung enriches the soil by providing nutrients for plant growth.6. Grasses are generally the dominant type of natural vegetation in semiarid lands.参考答案：This is a Vocabulary question. The word being tested is threatened. It is highlighted in the passage. To threaten means to speak or act as if you will cause harm to someone or something. The object of the threat is in danger of being hurt, so the correct answer is choice 2,"endangered."This is a Factual Information question asking for specific information that can be found in paragraph 3. The correct answer is choice 2, reduced water absorption. The paragraph explicitly states that the reduction of vegetation greatly reduces water absorption. Choice 4, reduced water runoff, explicitly contradicts the paragraph, so it is incorrect. The "spaces in the soil" are mentioned in another context: the paragraph does not say that they increase, so choice 3 is incorrect. The paragraph does not mention choice 1.This is a Vocabulary question. The word being tested is delicate. It is highlighted in the passage. The correct answer is choice 1, "fragile," meaning "easily broken." Delicate has the same meaning as "fragile."This is a Factual Information question asking for specific information that can be found in paragraph 5. The correct answer is choice 1: border areas have difficulty "adjusting to stresses created by settlement." The paragraph says that "expanding populations," or settlement, subject border areas to "pressures," or stress, that the land may not "be able to respond to." Choice 2 is incorrect because the paragraph does not discuss "fertility" after desertification. Choice 3 is also incorrect because "irrigation" is not mentioned here. The paragraph mentions "increasing populations" but not the difficulty of "attracting populations," so choice 4 is incorrect.This is a Vocabulary question. The word being tested is progressively. It is highlighted in the passage. The correct answer is choice 4, "increasingly." Progressively as it is used here means "more," and "more" of something means that it is increasing.This is a Factual Information question asking for specific information that can be found in paragraph 6. The correct answer is choice 3, "removal of the original vegetation." Sentence 4 of this paragraph says that "the raising of most crops necessitates the prior removal of the natural vegetation," an explicit statement of answer choice 3. Choice 1, lack of proper irrigation techniques, is incorrect because the paragraph mentions only "overirrigation" as a cause of desertification. No irrigation "techniques" are discussed. Choices 2 and 4, failure to plant suitable crops and use of animal waste, are not discussed.his is a Vocabulary question. A phrase is being tested here, and all of the answer choices are phrases. The phrase is "devoid of." It is highlighted in the passage. "Devoid of' means "without," so the correct answer is choice 4, "lacking in." If you lack something that means you are without that thing.This is a Factual Information question asking for specific information that can be found in paragraph 9. The correct answer is choice 4, "bring salts to the surface." The paragraph says that the final human cause of desertification is salinization resulting from overirrigation. The paragraph。
7月11日托福阅读真题完整版
7月11日托福阅读真题完整版2015年7月11日托福阅读真题（完整版）第一篇：心理学人们做事的时候有人和没有人的效果是不一样的，有时候，有人在能让事情做的更好，而有时候有相反的效果下面开始探究了：(具体过程不是很清晰了)1 当人们一起完成任务的时候，当只有总体结果被评价：个人会付出更少的努力，但独立的时候做得好，或者团体有着利益，时也会做得好，一个小组人越少，或者别人懒，能力不够等情况个人越可能付出更多的努力;2 人们在完成擅长的事情，有人在效果好，完成不擅长的事情，效果糟最后说明了一些消除方法，个人在团体中懒散的情况普遍存在，但也有差异。
第二篇：基因物质的发现原来人们不知道遗传物质是什么，格里菲斯有一天做疫苗，培养了S菌和R菌，S有毒，R没毒，但在杀死的'S和来一起培养的时候，混合物依然有毒性下面开始探究：艾弗里把其他物质去除后发现了遗传物质，但是人们以为遗传物质仍然是蛋白质，因为人们觉得核酸太小，不足以携带足够遗传信息这篇勾起了高中生物课本的回忆啊。
第三篇：鸟类唱歌大部分鸟比较晚，有一些很早，记得例子是white什么鸟，对比自然情况下和实验室里面这种鸟唱歌的早晚和方言(dialect)，并且这种鸟在自然中唱歌是因为他们在aututum就有自己的领地了，最后讲的是放磁带别的鸟的叫声，他们会自己识别出来同种鸟类的声音(PS这篇文章我们在听力练习里面做过，只不过这次阅读补充详细了一些) 第四篇(怀疑为加试)：说large animals like ZK他有一个long horn，它会用horn来攻击，以求偶和保护领地。
但这会受到它的predators的影响。
如果predators多，它的horn来变小，甚至变成食草动物。
而且一般情况下，它live alone or in small groups，但是这容易被predators攻击，于是渐渐地，它们变成群居动物。
1997年10月托福考试阅读理解全真试题2
Question 8-17 Beads were probably the first durable ornaments humans possessed， and the intimate relationship they had with their owners is reflected in the fact that beads are among the most common items found in ancient archaeological sites. In the past， as today， men， women， and children adorned them- selves with beads. In some cultures still， certain beads are often worn from birth until death， and then are buried with their owners for the afterlife. Abrasion due to daily wear alters the surface features of beads， and if they are buried for long，the effects of corrosion can further change their appearance. Thus， interest is imparted to the bead both by use and the effects of time. Besides their wear ability， either as jewelry or incorporated into articles of attire， beads possess the desirable characteristics of every collectible， they are durable， portable， available in infinite variety， and often valuable in their original cultural context as well as in today s market. Pleasing to look at and touch， beads come in shapes， colors， and materials that almost compel one to handle them and to sort them. Beads are miniature bundles of secrets waiting to be revealed： their history， manufacture， cultural context，economic role， and ornamental use are all points of information one hopes to unravel. Even the most mundane beads may have traveled great distances and been exposed to many human experiences. The bead researcher must gather information from many diverse fields. In addition to having to be a generalist while specializing in what may seem to be a narrow field，the researcher is faced with the problem of primary materials that have little or no documentation. Many ancient beads that are of ethnographic interest have often been separated from their original cultural context. The special attractions of beads contribute to the uniqueness of bead research. While often regarded as the "small change of civilizations"， beads are a part of every culture， and they can often be used to date archaeological sites and to designate the degree of mercantile， technological， and cultural sophistication. 8. What is the main subject of the passage？ （A） Materials used in making beads. （B） How beads are made （C） The reasons for studying beads （D） Different types of beads 9. The word "adorned" in line 5 is closest in meaning to （A） protected （B） decorated （C） purchased （D） enjoyed 10.The word "attire" in line 14 is closest in meaning to （A） ritual （B） importance （C） clothing （D） history 11.All of the following are given as characteristics of collectible objects EXCEPT （A） durability （B） portability （C） value （D） scarcity. 12.According to the passage， all of the following are factors that make people want to touch beads EXCEPT the （A） shape （B） color （C） material （D） odor 13.The word "unravel" in line 23 is closest in meaning to （A） communicate （B） transport （C） improve （D） discover 14.The word "mundane" in line 16 is closest in meaning to （A） carved （B） beautiful （C） ordinary （D） heavy 15.It is difficult to trace the history of certain ancient beads because they （A） are small in size （B） have been buried underground （C） have been moved from their original locations （D） are frequently lost 16.Knowledge of the history of some beads may be useful in the studies done by which of the following？ （A） Anthropologists （B） Agricultural experts （C） Medical researchers （D） Economists 17.Where in the passage does the author describe why the appearance of beads may change？ （A） Lines 3-4 （B） Lines 6-8 （C） Lines 12-13 （D） Lines 20-22.。
托福阅读考试真题及答案
托福阅读考试真题及答案在社会的各个领域，只要有考核要求，就会有试题，借助试题可以更好地考核参考者的知识才能。
那么你知道什么样的试题才能有效帮助到我们吗？下面是我精心整理的托福阅读考试真题及答案，欢迎阅读，希望大家能够喜欢。
During the second half of the nineteenth century, the production of food and feed crops in the United States rose at an extraordinarily rapid rate. Corn production increased by four and a half times, hay by five times, oats and wheat by seven times. The most crucial factor behind this phenomenal upsurge in productivity was the widespread adoption of labor-saving machinery by northern farmers. By 1850 horse-drawn reaping machines that cut grain were being introduced into the major grain-growing regions of the country. Horse-powered threshing machines to separate the seeds from the plants were already in general use. However, it was the onset of the Civil War in 1861 that provided the great stimulus for the mechanization of northern agriculture. With much of the labor force inducted into the army and with grain prices on the rise, northern farmers rushed to avail themselves of the new labor-saving equipment. In 1860 there were approximately 80,000 reapers in the country; five years later there were350,000.After the close of the war in 1865, machinery became ever more important in northern agriculture, and improved equipment was continually introduced. By 1880 a self-binding reaper had been perfected that not only cut the grain, but also gathered the stalks and bound them with twine. Threshing machines were also being improved and enlarged, and after 1870 they were increasingly powered by steam engines rather than by horses. Since steam-powered threshing machines were costly items — running from $ 1,000 to $4,000 — they were usually owned by custom thresher owners who then worked their way from farm to farm during the harvest season. "Combines" were also coming into use on the great wheat ranches in California and the Pacific Northwest. These ponderous machines — sometimes pulled by as many as 40 horses — reaped the grain, threshed it, and bagged it, all in one simultaneous operation.The adoption of labor-saving machinery had a profound effect upon the sale of agricultural operations in the northern states — allowing farmers to increase vastly their crop acreage. By the end of century, a farmer employing the new machinery could plant and harvest two and half times as much corn as a farmer had using hand methods 50 years before.1. What aspect of farming in the United States in the nineteenthcentury does the passage mainly discuss?(A) How labor-saving machinery increased crop Production(B) Why southern farms were not as successful as Successful as northern farms(C) Farming practices before the Civil War(D) The increase in the number of people farming2. The word "crucial" in line 4 is closest in meaning to(A) obvious(B) unbelievable(C) important(D) desirable3. The phrase "avail themselves" in line 11 is closest in meaning to(A) take care(B) make use(C) get rid(D) do more4. According to the passage , why was the Civil War a stimulus for mechanization?(A) The army needed more grain in order to feed the soldiers.(B) Technology developed for the war could also the used by farmers.(C) It was hoped that harvesting more grain would lower the price of grain.(D) Machines were needed to replace a disappearing labor force.5. The passage supports which of the following statements about machinery after the Civil War?(A) Many farmers preferred not to use the new machinery.(B) Returning laborers replaced the use of machinery.(C) The use of farm machinery continued to increase.(D) Poor-quality machinery slowed the pace of crop production.6. Combines and self-binding reapers were similar because each(A) could perform more than one function(B) required relatively little power to operate(C) was utilized mainly in California(D) required two people to operate7. The word "they" in line 19 refers to(A) grain stalks(B) threshing machines(C) steam engines(D) horses8. It can be inferred from the passage that most farmers did not own threshing machines because(A) farmers did not know how to use the new machines(B) farmers had no space to keep the machines(C) thresher owner had chance to buy the machines before farmers did(D) the machines were too expensive for every farmer to own9. The word "ponderous" in line 21 is closest in meaning to(A) advanced(B) heavy(C) complex(D) rapid正确答案：ACBDC ABDB托福听力考试要求1、Basic Comprehension: Gist + Details基本理解能力的考察大概占到托福听力总体比例的70%左右，首先，几乎是每篇对话和讲座的第一道题都是主旨题，只不过问法可能不一样，而细节题占的比例也比较大。
1997年10月托福考试阅读理解全真试题1
Question 1-7 Hotels were among the earliest facilities that bound the United States together. They were both creatures and creators of communities， as well as symptoms of the frenetic quest for community. Even in the first part of the nineteenthcentury，Americans were already forming the habit of gathering from all corners of the nation for both public and private，business and pleasure purposes. Conventions were the new occasions， and hotels were distinctively American facilities making conven- tions possible. The first national convention of a major party to choose a candidate for President （that of the National Republican party， which met on December 12， 1831， and nominated Henry Clay for President） was held in Baltimore， at a hotel that was then reputed to be the best in the country. The presence in Baltimore of Barnum s City Hotel， a six-story building with two hundred apartments helps explain why many other early national political conventions were held there. In the longer run， too. American hotels made other national conventions not only possible but pleasant and convivial. The growing custom of regularly assembling from afar the representatives of all kinds of groups - not only for political conventions，but also for commercial， professional， learned， and avocational ones - in turn supported the multiplying hotels. By mid-twentieth century， conventions accounted for over a third of the yearly room occupancy of all hotels in the nation， about eighteen thousand different conventions were held annually with a total attendance of about ten million persons. Nineteenth-century American hotelkeepers， who were no longer the genial， deferential "hosts" of the eighteenth-century European inn， became leading citizens. Holding a large stake in the community， they exercised power to make it prosper. As owners or managers of the local "palace of the public"， they were makers and shapers of a principal community attraction. Travelers from abroad were mildly shocked by this high social position. 1. The word "bound" in line 1 is closest in meaning to （A） led （B） protected （C） tied （D） strengthened 2. The National Republican party is mentioned in line 10 as an example of a group （A） from Baltimore （B） of learned people （C） owning a hotel （D） holding a convention 3. The word "assembling" in line 19 is closest in meaning to （A） announcing （B） motivating （C） gathering （D） contracting 4. The word "ones" in line 22 refers to （A） hotels （B） conventions （C） kinds （D） representatives 5. The word "it" in line 30 refers to （A） European inn （B） host （C） community （D） public 6. It can be inferred from the passage that early hotelkeepers in the United States were （A） active politicians （B） European immigrants （C） Professional builders （D） Influential citizens 7. Which of the following statements about early American hotels is NOT mentioned in the passage？ （A） Travelers from abroad did not enjoy staying in them. （B） Conventions were held in them （C） People used them for both business and pleasure. （D） They were important to the community.。
2021年托福阅读PASSAGE 97 试题及答案
2021年托福阅读PASSAGE 97试题及答案PASSAGE 97The Moon, which has undergone a distinct and complex geological history, presents a striking appearance. The moon may be divided into two major terrains: the Maria (dark lowlands) and the Terrace (bright highlands). The contrast in the reflectivity (the capability of reflecting light) of these two terrains suggested to many early observers that the two terrains might have different compositions, and this supposition was confirmed by missions to the Moon such as Surveyor and Apollo. One of the most obvious differences between the terrains is the smoothness of the Maria in contrast to the roughness of the highlands. This roughness is mostly caused by the abundance of craters: the highlands are completely covered by large craters (greater than 40-50 km in diameter), while the craters of the Maria tend to be much smaller. It is now known that the vast majority of the Moon's craters were formed by the impact of solid bodies with the lunar surface.Most of the near side of the Moon was thoroughly mapped and studied from telescopic pictures years before the age of space exploration. Earth-based telescopes can resolve objects as small as a few hundred meters on the lunar surface. Close observation of craters, combined with the way the Moon diffusely reflects sunlight, led to the understanding that the Moon is covered by a surface layer, or regolith, that overlies the solid rock of the Moon. Telescopic images permitted the cataloging of a bewildering array of land forms. Craters were studied for clues to their origin; the large wispy marks were seen. Strange, sinuous features were observed in the Maria. Although various land forms were catalogued, the majority of astronomers' attention was fixed on craters and their origins. Astronomers have known for a fairly long time that the shape of craters changes as they increase in size. Small craters with diameters of less than 10-15 km have relatively simple shapes.They have rim crests that are elevated above the surrounding terrain, smooth, bowl-shaped interiors, and depths that are about one-sixth their diameters. The complexity of shape increases for larger craters.1. What does the passage mainly discuss?(A) What astronomers learned from the Surveyor and Apollo space missions.(B) Characteristics of the major terrains of the Moon.(C) The origin of the Moon's craters.(D) Techniques used to catalogue the Moon's land forms.2. The word "undergone" in line 1 is closest in meaning to(A) altered(B) substituted(C) experienced(D) preserved3. According to the passage , the Maria differ from the Terrace mainly in terms of(A) age(B) manner of creation(C) size(D) composition4. The passage supports which of the following statements about the Surveyor and Apollo missions?(A) They confirmed earlier theories about the Moon's surface.(B) They revealed that previous ideas about the Moon's craters were incorrect.(C) They were unable to provide detailed information about the Moon's surface.(D) They were unable to identify how the Moon's craters were made.5. The word "vast" in line 11 is closest in meaning to(A) special(B) known(C) varied(D) great6. All of the following are true of the Maria EXCEPT:(A) They have small craters.(B) They have been analyzed by astronomers.(C) They have a rough texture.(D) They tend to be darker than the terrace.7. All of the following terms are defined in the passage EXCEPT(A) Moon (line 1)(B) reflectivity (line 3)(C) regolith (line 16)(D) Maria (line 2)8. The author mentions "wispy marks" in line 19 as an example of(A) an aspect of the lunar surface discovered through lunar missions(B) a characteristic of large craters(C) a discovery made through the use of Earth-based telescopes(D) features that astronomers observed to be common to the Earth and the Moon9. According to the passage , lunar researchers have focused mostly on(A) the possibility of finding water on the Moon(B) the lunar regolith(C) cataloging various land formations(D) craters and their origins10. The passage probably continues with a discussion of(A) the reasons craters are difficult to study(B) the different shapes small craters can have(C) some features of large craters(D) some difference in the ways small and large craters were formedANSWER KEYSPASSAGE 97 BCDAD CACDC。
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97年1月TOFEL阅读(Page 161-163)CQuestion 1-8Both the number and the percentage of people in the United States involved in nonagricultural pursuits expanded rapidly during the half century following the Civil War, with some of the most dramatic increases occurring in the domains of transportation, manufacturing, and trade and distribution. The development of the railroad and telegraph systems during the middle third of the nineteenth century led to significant improvements in the speed, volume, and regularity of shipments and communications, making possible a fundamental transformation in the production and distribution of goods.In agriculture, the transformation was marked by the emergence of the grain elevators, the cotton presses, the warehouses, and the commodity exchanges that seemed to so many of the nation's farmers the visible sign of a vast conspiracy against them. In manufacturing, the transformation was marked by the emergence of a "new factory system" in which plants became larger, more complex, and more systematically organized and managed. And in distribution, the transformation was marked by the emergence of the jobber, the wholesaler, and the mass retailer. These changes radically altered the nature of work during the half century between 1870 and 1920. To be sure, there were still small workshops, where skilled craftspeople manufactured products ranging from newspapers to cabinets to plumbing fixtures. There were the sweatshops in city tenements, where groups of men and women in household settings manufactured clothing or cigars on a piecework basis. And there were factories in occupations such as metalwork where individual contractors presided over what were essentially handicraft proprietorships that coexisted within a single buildings. But as the number of wage earners in manufacturing rose from 2.7 million in 1880 to 4.5 million in 1900 to 8.4 million in 1920, the number of huge plants like the Baldwin Locomotive Works in Philadelphia burgeoned, as did the size of the average plant. (The Baldwin Works had 600 employees in 1855, 3,000 in 1875, and 8,000 in 1900.) By 1920, at least in the northeastern United States where most of the nation's manufacturing wage earners were concentrated, three-quarters of those worked in factories with more than 100 employees and 30 percent worked in factories with more than 1,000 employees.1. The word "domains" in line 3 is closest in meaning to(A) fields(B) locations(C) organizations(D) occupations2. What can be inferred from the passage about the agricultural sector of the economy after theCivil War?(A) New technological developments had little effect on farmers.(B) The percentage of the total population working in agriculture declined.(C) Many farms destroyed in the war were rebuilt after the war.(D) Farmers achieved new prosperity because of better rural transportation.3. The word "fundamental" in line 7 is closest in meaning to(A) possible(B) basic(C) gradual(D) unique4. Which of the following was NOT mentioned as part of the "new factory system?"(A) A change in the organization of factories.(B) A growth in the complexity of factories.(C) An increase in the size of factories.(D) An increase in the cost of manufacturing industrial products.5. Which of the following statements about manufacturing before 1870 can be inferred from thepassage?(A) Most manufacturing activity was highly organized.(B) Most manufacturing occurred in relatively small plants.(C) The most commonly manufactured goods were cotton presses.(D) Manufacturing and agriculture each made up about half of the nation's economy.6. The word "skilled" in line 16 is closest in meaning to(A) hardworking(B) expert(C) well-paid(D) industrial7. The word "presided over" in line 20 are closest in meaning to(A) managed(B) led to(C) worked in(D) produced8. The author mentions the Baldwin Locomotive Works in lines 23-24 because it was(A) a well-known metal-works(B) the first plant of its kind in Philadelphia(C) typical of the large factories that were becoming more common(D) typical of factories that consisted of a single buildingQuestion 9-19Stars may be spheres, but not every celestial object is spherical. Objects in the universe show a variety of shapes: round planets (some with rings), tailed comets, wispy cosmic gas and dust clouds, ringed nebulae, pinwheel-shaped spiral galaxies, and so on. But none of the shapes on this list describes the largest single entities in the universe. These are the double radio sources, galaxies with huge clouds of radio emission that dwarf the visible galaxies, sometimes by a factor of a hundred or more. Stretching over distances greater than a million light-years, these radio-emitting regions resemble twin turbulent gas clouds, typically forming dumbbell-like shapes with the visible galaxy (when it is visible) in the center.These double radio sources present astronomers with a puzzle. Their radio emission arises from the synchrotron process, in which electrons accelerated to nearly the speed of light move through magnetic fields. However, in view of the rate at which the radio sources emit energy, they should disappear in a few million years as their electrons slow down and cease producing radiation. Somehow new electrons must be continually accelerated to nearly the speed of light, otherwise, by now almost none of the double radio sources would be observed.With the advent of high-resolution radio interferometers during the late 1970's, part of the answer became clear: the electrons are produced in jets that are shot out in opposite directions from the center of galaxy. Remarkably narrow and highly directional, the jets move outward at speeds close to the speed of light. When the jets strike the highly rarefied gas that permcales intergalactic space, the fast-moving electrons lose their highly directional motion and form vast clouds of radio-emitting gas.Cosmic jets have ranked among the hottest topics of astronomical research in recent years as astronomers strive to understand where they come from. Why should a galaxy eject matter at such tremendous speeds in two narrow jets? And why are such jets not seen in the Milky Way?9. The word "celestial" in line 1 could best be replaced by(A) visible(B) astronomical(C) glowing(D) scientific10. The word "entities" in line 4 is closest in meaning to(A) factors(B) processes(C) objects(D) puzzles11. In the first paragraph, the author describes objects in the universe in terms of their(A) color(B) origin(C) location(D) shape12. Which of the following is the best representation of the clouds of radio emissiondescribed in the first paragraph?(A) （图）(B) （图）(C) （图）(D) （图）13. According to the passage, scientists do not fully understand why double radio sources(A) have not eventually disappeared(B) cannot be observed with a telescope(C) are beginning to slow down(D) are not as big as some planets and stars14. The word "their" in line 22 refers to(A) speeds(B) directions(C) electrons(D) clouds15. According to the passage, what happens when electrons and gas collide in space?(A) The gas becomes more condensed(B) The gas becomes less radiated(C) The electrons disperse(D) The electrons become negatively charged16. The author suggests that astronomers consider the study of cosmic jets to be(A) an obsolete scientific field(B) an unprofitable venture(C) an intriguing challenge(D) a subjective debate17. In what lines does the passage compare the size of double radio sources with that of othergalaxies?(A) Lines 4-6(B) Lines 12-14(C) Lines 19-20(D) Lines 23-2418. Where in the passage does the author mention a technology that aided in theunderstanding of double radio sources?(A) Line 2(B) Line 7(C) Line 17(D) Line 2119. The paragraph following the passage most likely discusses(A) specific double radio sources(B) an explanation of the synchrotron process(C) possible reasons for the presence of cosmic jets(D) the discovery of the first double radio sources.Questions 20-28The sculptural legacy that the new United States inherited from its colonial predecessors was far from a rich one, and in fact, in 1776 sculpture as an art form was still in the hands of artisans and craftspeople. Stone carvers engraved their motifs of skulls and crossbones and other religious icons of death into the gray slabs that we still see standing today in old burial grounds. Some skilled craftspeople made intricately carved wooden ornamentations for furniture or architectural decorations, while others caved wooden shop signs and ships' figureheads. Although they often achieved expression and formal excellence in their generally primitive style, they remained artisans skilled in the craft of carving and constituted a group distinct from what we normally think of as "sculptors" in today's use of the word.On the rare occasion when a fine piece of sculpture was desired, Americans turned to foreign sculptors, as in the 1770's when the cities of New York and Charleston, South Carolina, commissioned the Englishman Joseph Wilton to make marble statues of William Pitt. Wilton also made a lead equestrian image of King George III that was created in New York in 1770 and torn down by zealous patriots six years later. A few marble memorials with carved busts, urns, or other decorations were produced in England and brought to the colonies to be set in the walls of churches-as in King's Chapel in Boston. But sculpture as a high art, practiced by artists who knew both the artistic theory of their Renaissance-Baroque-Rococo predecessors and the various technical procedures of modeling, casting, and carving rich three-dimensional forms, was not known among Americans in 1776. Indeed, for many years thereafter, the United States had two groups from which to choose - either the local craftspeople or the imported talent of European sculptors.The eighteenth century was not one in which powered sculptural conceptions were developed. Add to this the timidity with which unschooled artisans - originally trained as stonemasons, carpenters, or cabinetmakers - attacked the medium from which they sculpture made in the United States in the late eighteenth century.20. What is the main idea of the passage?(A) There was great demand for the work of eighteenth-century artisans.(B) Skilled sculptors did not exist in the United States in the 1770's.(C) Many foreign sculptors worked in the United States after 1776.(D) American sculptors were hampered by a lack of tools and materials.21. The word "motifs" in line 3 is closest in meaning to(A) tools(B) prints(C) signatures(D) designs22. The work of which of the following could be seen in burial grounds?(A) European sculptors(B) Carpenters(C) Stone carves(D) Cabinetmakers23. The word "other" in line 6 refers to(A) craftspeople(B) decorations(C) ornamentations(D) shop signs24. The word "distinct" in line 9 is closest in meaning to(A) separate(B) assembled(C) notable(D) inferior25. The word "rare" in line 11 is closest in meaning to(A) festive(B) infrequent(C) delightful(D) unexpected26. Why does the author mention Joseph Wilton in line 13?(A) He was an English sculptor who did work in the United States.(B) He was well known for his wood carvings(C) He produced sculpture for churches.(D) He settled in the United States in 1776.27. What can be inferred about the importation of marble memorials from England?(A) Such sculpture was less expensive to produce locally than to import(B) Such sculpture was not available in the United States.(C) Such sculpture was as prestigious as those made locally.(D) The materials found abroad were superior.28. How did the work of American carvers in 1776 differ from that of contemporary sculptors?(A) It was less time-consuming(B) It was more dangerous.(C) It was more expensive.(D) It was less refined.Question 29-39Large animals that inhabit the desert have evolved a number of adaptations for reducing the effects of extreme heat. One adaptation is to be light in color, and to reflect rather than absorb the Sun's rays. Desert mammals also depart from the normal mammalian practice of maintaining a constant body temperature. Instead of trying to keep down the body temperature deep inside the body, which would involve the expenditure of water and energy, desert mammals allow their temperatures to rise to what would normally be fever height, and temperatures as high as 46 degrees Celsius have been measured in Grant's gazelles. The overheated body then cools down during the cold desert night, and indeed the temperature may fall unusually low by dawn, as low as 34 degrees Celsius in the camel. This is an advantage since the heat of the first few hours of daylight is absorbed in warming up the body, and an excessive buildup of heat does not begin until well into the day.Another strategy of large desert animals is to tolerate the loss of body water to a point that would be fatal for non-adapted animals. The camel can lose up to 30 percent of its body weight aswater without harm to itself, whereas human beings die after losing only 12 to 13 percent of their body weight. An equally important adaptation is the ability to replenish this water loss at one drink. Desert animals can drink prodigious volumes in a short time, and camels have been known to imbibe over 100 liters in a few minutes. A very dehydrated person, on the other hand, cannot drink enough water to rehydrate at one session, because the human stomach is not sufficiently big and because a too rapid dilution of the body fluids causes death from water intoxication. The tolerance of water loss is of obvious advantage in the desert, as animals do not have to remain near a water hole but can obtain food from grazing sparse and far-flung pastures. Desert-adapted mammals have the further ability to feed normally when extremely dehydrated, it is a common experience in people that appetite is lost even under conditions of moderate thirst.29. What is the main topic of the passage?(A) Weather variations in the desert(B) Adaptations of desert animals(C) Diseased of desert animals(D) Human use of desert animals.30. According to the passage, why is light coloring an advantage to large desert animals?(A) It helps them hide from predators.(B) It does not absorb sunlight as much as dark colors.(C) It helps them see their young at night(D) It keeps them cool at night.31. The word "maintaining" in line 4 is closest in meaning to(A) measuring(B) inheriting(C) preserving(D) delaying32. The author uses of Grant's gazelle as an example of(A) an animal with a low average temperature(B) an animal that is not as well adapted as the camel(C) a desert animal that can withstand high body temperatures(D) a desert animal with a constant body temperature33. When is the internal temperature of a large desert mammal lower?(A) Just before sunrise(B) In the middle of the day(C) Just after sunset(D) Just after drinking34. The word "tolerate" in line 13 is closest in meaning to(A) endure(B) replace(C) compensate(D) reduce35. What causes water intoxication?(A) Drinking too much water very quickly(B) Drinking polluted water(C) Bacteria in water(D) Lack of water.36. What does the author imply about desert-adapted mammals?(A) They do not need to eat much food.(B) They can eat large quantities quickly(C) They easily lose their appetites.(D) They can travel long distances looking for food.37. Why does the author mention humans in the second paragraph?(A) To show how they use camels.(B) To contrast them to desert mammals.(C) To give instructions about desert survival.(D) To show how they have adapted to desert life.38. The word "obtain" in line 23 is closest in meaning to(A) digest(B) carry(C) save(D) get39. Which of the following is NOT mentioned as an adaptation of large desert animals?(A) Variation in body temperatures(B) Eating while dehydrated(C) Drinking water quickly(D) Being active at night.Questions 40-50Rent control is the system whereby the local government tells building owners how much they can charge their tenants in rent. In the United States, rent controls date back to at least World War II.In 1943 the federal government imposed rent controls to help solve the problem of housing shortages during wartime. The federal program ended after the war, but in some locations, including New York City, controls continued. Under New York's controls, a landlord generally cannot raise rents on apartments as long as the tenants continue to renew their leases. In places such as Santa Monica, California, rent controls are more recent. They were spurred by the inflation of the 1970's, which, combined with California's rapid population growth, pushed housing prices, as well as rents, to record levels. In 1979 Santa Monica's municipal government ordered landlords to roll back their rents to the levels charged in 1978. Future rents could only go up by two-thirds as much as any increase in the overall price level.In any housing market, rental prices perform three functions: (1) promoting the efficient maintenance of existing housing and stimulating the construction of new housing, (2) allocating existing scarce housing among competing claimants, and (3) rationing use of existing housing by potential renters.One result of rent control is a decrease in the construction of new rental units. Rent controls have artificially depressed the most important long-term determinant of profitability - rents. Consider some examples. In a recent year in Dallas, Texas, with a 16 percent rental vacancy rate but no rent control laws, 11,000 new housing units were built. In the same year, in San Francisco, California, only 2,000 units were built. The major difference? San Francisco has only a 1.6 percent vacancy rate but stringent rent control laws. In New York City, except for government-subsidized construction, the only rental units being built are luxury units, which are exempt from controls. In Santa Monica, California, new apartments are not being constructed. New office rental space and commercial developments are, however. They are exempt from rent controls.40. What does the passage mainly discuss?(A) The construction of apartments in the United States.(B) Causes and effects of rent control(C) The fluctuations of rental prices(D) The shortage of affordable housing in the United States.41. The word "They" in line 9 refers to(A) the tenants(B) their leases(C) places(D) rent controls.42. Which of the following was NOT a reason for the introduction of rent controls in SantaMonica, California?(A) Rapid population growth(B) Inflation(C) Economic conditions during wartime(D) Record-high housing prices43. The phrase "roll back" in lines 11-12 is closest in meaning to(A) credit(B) measure(C) vary(D) reduce44. The word "stimulating" in line 15 is closest in meaning to(A) experimenting with(B) identifying(C) estimating(D) encouraging45. It can be inferred that the purpose of rent control is to(A) protect tenants(B) promote construction(C) increase vacancy rates(D) decrease sales of rental units46. The word "depressed" in line 19 is closest in meaning to(A) saddened(B) created(C) lowered(D) defeated47. The information in the last paragraph supports which of the following statements?(A) San Francisco has eliminated its rent control laws.(B) Rent control leads to a reduction in the construction of housing units(C) Luxury apartments are rarely built when there is rent control(D) There is a growing need for government-subsidized housing.48. According to the passage, which of the following cities does NOT currently have rentcontrols?(A) Santa Monica(B) Dallas(C) San Francisco(D) New York City49. The word "stringent" in line 23 is closest in meaning to(A) straightforward(B) strict(C) expanded(D) efficient50. According to the passage, which of the following is NOT exempt from rent control?(A) Luxury apartments(B) Commercial development(C) Moderately priced apartments(D) Office space.。