文档库 最新最全的文档下载
当前位置:文档库 › 小托福阅读

小托福阅读

小托福阅读
小托福阅读

Questions 1-9 are about the following passage.

Biorobotics is a field within robotic science that is based on the movements of living things. The most famous biorobots look and move a lot like humans. However, there are several robots that have been made to mimic animals. While many companies develop such robots as toys, some are used for practical purposes. One example of a biorobot is a flying robot that is based on the movements of bees. The robot, named “Carlton,” was developed by the German Research Center for Artificial Intelligence. Built to be both light and powerful, it can hover like a bee in tight spaces and also change direction without losing speed. This rob ot’s abilities make it very useful for military and police search and rescue missions. For example, Carlton can hide behind a tall wall, rise up to quickly look at what is on the other side, and then hide again. It can also send video images of what it sees to soldiers in a safe location far away. “Modsnake” is a robot that was modeled on snakes. This robot was developed by the Carnegie Mellon University Biorobotics Lab. It is made to move like a snake, so it can pass through narrow spaces, move over all sorts of obstacles, climb poles, and even swim. The way Modsnake moves makes it useful for a variety of tasks, such as checking for survivors in collapsed buildings, finding damaged areas inside of pipes, and cleaning up oil spills in lakes and rivers. A third robot, based on cockroaches, also has several uses. “Sprawl” was designed by a research team at Stanford University to take videos and recover small objects. Like many six-legged robots, Sprawl was made to move like an insect. However, Sprawl is uncommonly fast and strong for its size, just like a real cockroach. These characteristics make it particularly useful for military situations in which an enemy might try to disable it. It is very difficult to shoot because it moves quickly and is relatively small. Even if an enemy shoots Sprawl, it can usually keep functioning.

1. What is the passage mainly about?

(A) Biorobots based on animals (B) Biorobots that work like humans (C) Military uses of biorobots (D) Flying abilities of biorobots

2. In line 3, the word mimic is closest in meaning to_____.

(A) understand (B) guard (C) teach (D) copy

3. In line 3, the word some refers to_____.

(A) companies (B) toys (C) robots (D) humans

4. According to the passage, Carlton can do all of the following things EXCEPT ________. (A) change directions quickly (B) climb in tight spaces (C) hide behind walls (D) send video images

5. What does the author imply about Modsnake?

(A) It has no legs. (B) It moves quickly. (C) It can be dangerous. (D) It has no military uses.

6. In line 13, the word collapsed is closest in meaning to_____.

(A) old (B) cheap (C) wooden (D) fallen

7. Which of the following is true about Sprawl?

(A) It was originally built to destroy small objects. (B) It was developed by a German research team.

(C) It is smaller than a cockroach. (D) It is small but very solid.

8. Why is Sprawl useful in military situations? (A) It cannot be shot. (B) It can shoot at the enemy. (C) It is small enough to be shot from a gun. (D) It will usually keep working even when shot.

9. In line 18, the word disable is closest in meaning to_____. (A) break (B) follow (C) see (D) buy

Questions 1-4 refer to the following e-mail.

Dear Random House Books I would like to join your young adult book club. But I was told by the book club

1.moderator that my membership request was too late for me【】this year. (A)to join (B)joining

(C)joined (D)will join

2.I was wondering if 【】that an exception could be made in my case. (A)any way (B)any way there

(C)is any way (D)there is any way

3.I【】the three books that the club has already discussed,and l am now (A)reading (B)will read (C)have read (D)am reading

4.reading the next one .Could you please let me【】about this as soon (A)known (B)knowing (C)to know (D)know as possible? Sincerely, Becky Holmes

Questions 5-8 refer to the following announcement

To All Students Who Bought Winter Semester Bus Passes: If you bought a city bus pass for this winter semester before September 1,

5.please contact the city bus division.After September 1 ,【】the cost (A) lowered(B)the city lowering

(C)the city lowered (D)lowered the city

6.of student bus passes from $95to$80.Students 【】$95 for their bus (A)were paying (B)paid

(C)which paid (d)who paid passes will get a $15 refund.However,these students must contact the city bus division

7.within the next two weeks. 【】The number is 444-0343,(A)to get their refunds (B)their refunds will be gotten (C)and to get their refunds (D)when getting their refunds

8.and the office【】are 9:00—5:00,Monday through Friday. (A)time (B)hours (C)life (D)services

Questions 9—14 refer to the following part of a short story .

Gilbert walked over to Jill Roadhouse and said,“Would you like to dance?”

9.She looked at him like he was speaking Russian, so he repeated 【】question. (A)some (B)other (C)a

(D)the

10 【】she spoke :”Uh?yeah,l guess so ,”said Jill. (A)Finally (B)lately (C)Evenly (D)Early When the music began to blast from the speakers,Gilbert was ready with the dance

11.moves that his sister 【】him .He kicked his right leg, clapped (A)teaching (B)taught (C)had taught

(D)was teaching

12.his hands,and did a tight spin on the spot.To his great delight,Jill looked 【】(A)impressed

(B)impressing (C)impression (D )impress and,following his lead,did the exact same dance step.She was smiling,and Gilbert

13.thought she must be having fun.【】filled him with confidence. (A)By thinking (B)It was the thought (C)The thought (D)Thinking

14.He spun around,but【】he did,he stumbled and fell . (A)since (B)as (C)if (D)until

Questions 15—22 refer to the following biography

15.Many critics agree that America has yet to produce another musical genius 【】(A)alike (B)even

(C)opposite (D)equal

16.to Leonard Bernstein(1918-1990).Bernstein learned 【】(A)how music to compose (B)to compose music how (C)how to compose music (D)to compose how music

17.at Harvard University. In 1943,he【】the assistant conductor of (A)making (B)was made (C)has made (D)has been made the New York Philharmonic Orchestra. Bernstein quickly became known for his technical

18.excellence and his creative and interesting 【】of classical music . (A)interpretations (B)interpreters

(C)interpret (D)interpretative During this time,he also composed the music for a number of Broadway shows,

19.but 【】show was West Side Story . (A)as popular (B )more popular (C)most popular (D)the most popular

20.ln 1958,Bernstein was 【】permanent conductor for the New York (A)compared (B)found

(C)appealed (D)appointed Philharmonic Orchestra. Bernstein sometimes played the dual role of conductor and

21.piano soloist,which【】for him to conduct from the piano . (A)it made it necessary (B)made it necessary (C)making it necessary was (D)it made necessary

22.During his career with the New York Philharmonic Orchestra,【】in 1969 (A)which ended (B)who ended (C)that ended (D)ended it Bernstein made numerous recordings and undertook several international tours.

Questions 23-30refer to the following article

23.An apprenticeship is 【】in which an apprentice learns a craft (A)trains for a period (B)a training period (C)a training is periodical (D)training periodically

24.or art from a master craftsman.【】was a common activity (A)An apprentice was been (B)By being an apprentice (C)An apprentice (D)Being an apprentice For young men during the Middle ages .A master craftsman usually operated a shop

25.【】several apprentices worked as his assistants.In most cases , (A)what (B)When (C)where (D)which

26.【】for seven years,often sleeping and eating in the shop. (A)apprentices worked (B)worked as apprentices (C)working as apprentices (D)work of apprentices

27.The【】between master craftsmen and apprentices was very strong,(A)stock(B)bond (C)band

(D)glue like father and son. When the apprentice finished his apprenticeship ,he sometimes

28.worked for 【】craftsman as a paid journeyman .Eventually, the journeyman (A)another (B)other

(C)the (D)every would open his own shop as a master craftsman and have apprentices of his own.

29.【】the rise of factories and mass production during the Industrial (A)Consequently (M)Moreover

(C)Therefore (D)However

30.Revolution opened the way for unskilled laborers .This【】in a decline (A)to result (B)resulting

(C)resulted (D)was resulted in the need for apprenticeships.

Directions In this section of the test,you will answer 30 questions found in five different texts. Within each text are boxes that contain four possible ways to complete a sentence. Choose the word or words in each box that correctly complete each sentence.Mark the letter of the correct answer on your answer sheet. Here are two sample questions: 1.The idea that rocks last forever and that rocks 【】change (A)very (B)ever (C)quite (D)never is not completely true.lf you have ever stood next to a rushing river,you【】the water hammering away at the rocks . (A)saw (B)seen (C)are seeing (D)may have seen The correct answer to sample l is (D)”never”.The correct answer to sample 2 is (D)“may have seen”.

Questions 1-4 refer to the following e- mail

Dear Mike, 1.This year grandma_____________ for my birthday . (a)gave a bicycle me (b)gave me a bicycle (c)a bicycle to give me (d)gave to me a bicycle 2.lt was generous of her _____________to me . (a)that sent it (B)sending it (c)to send it (d)it was sent 3.__________great exercise and I have been riding my bicycle (a)Cycling is (b)My cycling (c)Since cycling is (d)For cycling 4.to soccer practice every day.___________on the bicycle ,so it makes (a)Many gears (b)Many gears there (c)There is many gears (d)There are many gears riding fun and easy. I am excited to show it to you when you visit next week. Love, Your little brother James Questions 5-8 refer to the following announcement 5.Starting next Friday ,Marshall High School swimming pool __________for the next (a)been closed (b)has been closed (c)is closed (d)will be closed 6.two months due to maintenance work. During that time ,all students ___________ (a)are allowed (b)have allowed (c)will be allowed (d)will allow 7.to use the pool at the YMCA.If you________ to the office to register (a)will not yet be (b)have not yet been (c)are not yet (d)not yet to be for your temporary identification card ,please stop by before 3 p.m. tomorrow .

8.If you need_______ to someone ,please visit room 102 during office hours

(a)speaking (b)will speak (c)to speak (d)spoke Questions 9-14 refer to the following part of a short story Dr.Dorinhad been ten days in the jungle,and now the heat was starting to make him 9.________his decision to search for the rare begonia flower.When he first arrived , (a)question (b)questioning (c)to question (d)will

question he’d listened to the natives’stories and felt certain he could find it. But now he wasn’t so sure. 10.__________looked similar to begonia but none of them were the rare (a)Planting many (b)Many plants (c)There are many plants (d)With many plants 11.Begonia tessaricarpa.To make matters worse,Dr.Dorin was getting tired and _________ (a)his supplies (b)with his supplies (c)supplied him (d)his supplies were 12.low.__________when even the most adventurous scientist must give up (a)There comes a time (b)To come a time (c)A time to come (d)A time comes there and go home, he thought to himself .But as soon as he thought it ,a beautiful pink flower

13._________on the path before him .He bent in for a closer look . (a)appearing

(b)appeared (c)was appeared (d)to appear 14._________the plant he was looking for?

(a)Could this is (b)This could be (c)Could be this (d)Could this be Questions 15-22 refer to the following biography 15.Frank Gehry is_______ who is best known for the modernistic (a)modernizes architecture (b)a modern architect (c)an architect is modern (d)architecture of modernism 16.Bilbao Guggenheim Museum built in 1997. From the beginning ,__________ (a)Gehry’s passion was (b)With Gehry’s passio n (c)Gehry’s passion (d)Gehry was passionate 17.for drawing influenced his architectural style .Today ,___________to build (a)he continues (b)when he continues ?to continue (d)his continuing 18.structures that have similar design elements to his early style. Although he _________ (a)recognized (b)was recognized (c)recognizes (d)is recognized As an important architect,Gehry has his share of critics,many of whom find his buildings 19.to be formless .______________be called ordinary.Gehry has also had his share (a)Can his designs hardly (b)His designs hardly can (c)Hardly can his designs (d)Hardly his design can of controversy .In 2003,his budget for the Disney Concert Hall project went over by $174 https://www.wendangku.net/doc/bd10877945.html,lion and caused______________ between him and the movie giant .Despite (a)a legal dispute (b)a legal dispute was (c)a legal dispute ,which (d)of a legal dispute21.this,he ___________numerous awards and academic recognition.Thus,there (a)receiving (b)to receive (c)has received (d)has been received 22.can be no doubt that the architectural field __________by Gehry’s artistic contributions. (A)to be influenced (B)Influenced (C)has influenced (D)has been influenced Questions 23-30 refer to

the following article. 23.The Brooklyn Bridge_____________ to connect Manhattan and Brooklyn. The project (a)built (b)was built (c)has built (d)building 24.___________by New York State and completed in 1883 .Designed by john A. Roebling, (a)was funded (b)funded (c)to fund (d)has funded 25 it took thirteen years to construct .From the beginning ,___________ (a) there was construction (b) construction was (c)under construction (d)construction26.on the bridge was plagued by difficulties .And when john A.Roebling ________ (a)dying (b)to be died (c)was died (d)died 27.before completing the project ,his son Washington Roebling decided_____ over (a)took (B)taking (c)to take (d)take28.the project his father was unable to finish .The Bridge is ____________ (a)one of the oldest suspension bridges (b)to one of the oldest suspension bridges (c)the suspension bridge was the oldest one (d)it is the oldest suspension bridges29.in America ._____________the longest bridge at the time(a)Not the Brooklyn Bridge was only (b)The Brooklyn Bridge was only not (c)Not only was the Brooklyn Bridge (d)Not only the Brooklyn Bridge was of its completion ,it was ,and remains, a beloved landmark for new Yorkers. 30 ____________between Brooklyn and Manhattan on the upper level, (a)Pedestrians’travel (b)pedestrians travel (c)For pedestrians’travel (d)Travel ing pedestrians while automobiles use the six lanes on the lower level .

你要找的小托福考试阅读模拟题在这里!

你要找的小托福考试阅读模拟题在这里! 小托福的词汇量和语法难度相当于大学英语四级的水平,如果考生想要考一个好成绩,一定要多多练习,下文分享的就是小托福考试阅读模拟题,一起阅读下吧~ 在阅读部分,文章会涉及到人文学科、科学、社会科学等内容,学生要注意掌握文章主要内容,抓住关键点,了解作者意图并进行推理。同时,阅读部分的文章形式也十分多样,如电子邮件、信件、新闻、学生写作、广告、日程表等,学生需要在平时积累一些关于习惯用语的表达。 小托福考试阅读模拟题: 模拟题1: Outflow channels are probably relics of catastrophic flooding on Mars long ago. They appear only in equatorial regions and generally do not form extensive interconnected networks. Instead, they are probably the paths taken by huge volumes of water draining from the southern highlands into the northern plains. The onrushing water arising from these flash floods likely also formed the odd teardrop-shaped “islands” (resembling the miniature versions seen in the wet sand of our beaches at low tide) that have been found on the plains close to the ends of the outflow channels. Judging from the width and depth of the channels, the flow rates must have been truly enormous-perhaps as much as a hundred times greater than the 105 tons per second carried by the great Amazon river. Flooding shaped the outflow channels approximately 3 billion years ago, about the same times as the northern volcanic plains formed. Question: According to paragraph 2, all of the following are true of the outflow channels on Mars EXCEPT: A. They formed at around the same time that volcanic activity was occurring on the northern plains. B. They are found only on certain parts of the Martian surface. C. They sometimes empty onto what appear to have once been the wet sands of tidal beaches. D. They are thought to have carried water northward from the equatorial regions. 答案:C 解析:题干问的是原文关于“outflow channels”的描述。在真正考试中,把原文阅读完毕再去和选项比较会花费较多时间。因此,比较合理的做题顺序是,先读选项,然后拿选项和原文信息去比对。 A选项说的是outflow channel的形成时间和火山活动在北部平原的发生时间是相同的。快速浏览原文,只有在最后一句提到了它们的形成时间,说大概在30亿年前,about引导的时间状语很重要,补充说明了这一时间和北部火山平原形成的时间相同。A正确。 B选项说的是火山形成的地点,只在火星表面的特定区域。看原文,第二句,说的是它们只在赤道区域出现。B 也正确。

老托福阅读真题及答案解析

老托福阅读真题及答案解析 托福从听、说、读、写四方面进行英语能力全面考核。托福频道为大家提供了这四个方面的资料,希望对大家有所帮助。 Aviculturists, people who raise birds for commercial sale, have not yet learned how to simulate the natural incubation of parrot eggs in the wild. They continue to look for better ways to increase egg production and to improve chick survival rates. When parrots incubate their eggs in the wild, the temperature and humidity of the nest are controlled naturally. Heat is transferred from the bird's skin to the top portion of the eggshell, leaving the sides and bottom of the egg at a cooler temperature. This temperature gradient may be vital to successful hatching. Nest construction can contribute to this temperature gradient. Nests of loosely arranged sticks, rocks, or dirt are cooler in temperature at the bottom where the egg contacts the nesting material. Such nests also act as humidity regulators by allowing rain to drain into the bottom sections of the nest so that the eggs are not in direct contact with the water. As the water that collects in the bottom of the nest evaporates, the water vapor rises and is heated by the incubating bird, which adds significant humidity to the incubation environment. In artificial incubation programs, aviculturists remove eggs from the nests of parrots and incubate them under laboratory conditions. Most commercial incubators heat the eggs fairly evenly from top to bottom, thus ignoring the bird's method of natural incubation, and perhaps reducing the viability and survivability of the hatching chicks. When incubators are not used, aviculturists sometimes suspend wooden boxes outdoors to use as nests in which to place eggs. In areas where weather can become cold after eggs are laid, it is very important to maintain a deep foundation of nesting material to act as insulator against the cold bottom of the box. If eggs rest against the wooden bottom in extremely cold weather conditions, they can become chilled to a point where the embryo can no longer survive. Similarly, these boxes should be protected from direct sunlight to avoid high temperatures that are also fatal to the growing embryo. Nesting material should be added in sufficient amounts to avoid both extreme temperature situations mentioned above and assure that the eggs have a soft, secure place to rest. 1. What is the main idea of the passage ? (A) Nesting material varies according to the parrots' environment. (B) Humidity is an important factor in incubating parrots' eggs. (C) Aviculturists have constructed the ideal nest box for parrots. (D) Wild parrots' nests provide information useful for artificial incubation. 2. The word "They" in line 2 refers to

2020年托福阅读模拟试题及答案(卷九)

2020年托福阅读模拟试题及答案(卷九) 托福阅读文本: The Native American peoples of the north Pacific Coast created a highly complex maritime culture as they invented modes of production unique to their special environment. In addition to their sophisticated technical culture, they also attained one of the most complex social organizations of any nonagricultural people in the world. In a division of labor similar to that of the hunting peoples in the interior and among foraging peoples throughout the world, the men did most of the fishing, and the women processed the catch. Women also specialized in the gathering of the abundant shellfish that lived closer to shore. They collected oysters, crabs, sea urchins, mussels, abalone, and clams, which they could gather while remaining close to their children. The maritime life harvested by the women not only provided food, but also supplied more of the raw materials for making tools than did fish gathered by the men. Of particular importance for the native tool kit before the introduction of metal was the wide knife made from the larger mussel shells, and a variety of cutting edges that could be made from other marine shells. The women used their tools to process all of the fish and marine mammals brought in by the men. They cleaned the fish, and dried vast quantities of them for the winter. They sun-dried fish when practical, but

托福(TOEFL)考试阅读模拟试题(4)

托福(TOEFL)考试阅读模拟试题(4) Questions 11-20 Philosophy in the second half of the 19th century was based more on biology and history than on mathematics and physics. Revolutionary thought drifted away from metaphysics and epistemology and shifted more towards ideologies in science, politics, and sociology. Pragmatism became the most vigorous school of thought in American philosophy during this time, and it continued the empiricist tradition of grounding knowledge on experience and stressing the inductive procedures of experimental science. The three most important pragmatists of this period were the American philosophers Charles Peirce (1839-1914), considered to be the first of the American pragmatists, William James (1842-1910), the first great American psychologist, and John Dewey (1859-1952), who further developed the pragmatic principles of Peirce and James into a comprehensive system of thought that he called “experimental naturalism”, or “instrumentalism”. Pragmatism was generally critical of traditional western philosophy, especially the notion that there are absolute truths and absolute values. In contrast, Josiah Royce (1855-1916), was a leading American exponent of idealism at this time, who believed in an absolute truth and held that human thought and the external world were unified. Pragmatism called for ideas and theories to be tested in practice, assessing whether they produced desirable or undesirable results. Although pragmatism was popular for a time in Europe, most agree that it epitomized the American faith in know-how and practicality, and the equally American distrust of abstract theories and ideologies. Pragmatism is best understood in its historical and cultural context. It arose during a period of rapid scientific advancement, industrialization, and material progress; a time when the theory of evolution suggested to many thinkers that humanity and society are in a perpetual state of progress. This period also saw a decline in traditional religious beliefs and values. As a result, it became necessary to rethink fundamental ideas about values, religion, science, community, and individuality. Pragmatists regarded all theories and institutions as tentative hypotheses and solutions.

托福阅读真题100篇原文+题目(一)

托福阅读真题100篇原文+题目(一) 托福阅读在备考的过程中,大家可以多找一些真题来进行练习 PASSAGE 1 By the mid-nineteenth century, the term icebox had entered the American language, but icewas still only beginning to affect the diet of ordinary citizens in the United States. The ice tradegrew with the growth of cities. Ice was used in hotels, taverns, and hospitals, and by someforward-looking city dealers in fresh meat, fresh fish, and butter. After the Civil War (1861-1865),as ice was used to refrigerate freight cars, it also came into household use. Even before 1880, halfthe ice sold in New York, Philadelphia, and Baltimore, and one-third of that sold in Boston andChicago, went to families for their own use. This had become possible because a new householdconvenience, the icebox, a precursor of the modern refrigerator, had been invented. Making an efficient icebox was not as easy as we might now suppose. In the early nineteenthcentury, the knowledge of the physics of heat, which was essential to a science of refrigeration,was rudimentary. The commonsense notion that the best icebox was one that prevented the icefrom melting was of course mistaken, for it was the melting of the ice that performed the cooling.Nevertheless, early efforts to economize ice included wrapping the ice in blankets, which kept theice from doing its job. Not until near the end of the nineteenth century did inventors achieve thedelicate balance of insulation and circulation needed for an efficient icebox. But as early as 1803, an ingenious Maryland farmer, Thomas Moore, had been on the righttrack. He owned a farm about twenty miles outside the city of Washington, for which the villageof Georgetown was the market center. When he used an icebox of his own design to transport hisbutter to market, he found that customers would pass up the rapidly melting stuff

2019托福阅读考试真题(3)

2019托福阅读:模拟试题及答案解析(6) 【托福】 Although only 1 person in 20 in the Colonial period lived in a city, the cities had a disproportionate influence on the development of North America. They were at the cutting edge of social change. It was in the cities that the elements that can be associated with modern capitalism first appeared — the use of money and commercial paper in place of barter, open competition in place of social deference and hierarchy, with an attendant rise in social disorder, and the appearance of factories using coat or water power in place of independent craftspeople working with hand tools. "The cities predicted the future," wrote historian Gary. B. Nash, "even though they were but overgrown villages compared to the great urban centers of Europe, the Middle East and China." Except for Boston, whose population stabilized at about 16,000 in 1760, cities grew by exponential leaps through the eighteenth century. In the fifteen years prior to the outbreak of the War for independence in 1775, more than 200,000 immigrants arrived on North American shores. This meant that a population the size of Boston was arriving every year, and most of it flowed into the port cities in the Northeast. Philadelphia's population nearly doubted in those years, reaching about 30,000 in 1774, New York grew at almost the same rate, reaching about 25,000 by 1775. The quality of the hinterland dictated the pace of growth of the cities. The land surrounding Boston had always been poor farm country, and by the mid-eighteenth century it

小托福阅读理解解题技巧及练习题

小托福阅读理解解题技巧及练习题 在考试题中,阅读理解是考生头疼之一。为此,可乐留学频道为考生朋友们提供了小托福阅读理解解题技巧,赶紧往下查阅吧~ >>>小托福阅读理解解题技巧<<< ?阅读理解之主旨题 此类题型考查的是考生对文章的主要观点以及重要信息的归纳和理解能力.这类考题主要包括两种问法:总结main topic(或main idea)和归纳headline(或title)。 典型问法 What is the main topic of the article? What is the passage mainlu about/mostly about? Which would be the most sutitable/appropriate headline for the article? Which title best summarizes the main idea of the passage? 答题要旨 a)考生在做题时,首先应排除那些包含文中提及的信息和细节的选项,选出最能够概括文章主题观点的选项。 b)正确的选项会综合整篇文章的主要观点,所以任何涉及及细节的选项都不能选。同时,由于正确答案概括了文章每个部分的意义,所以不会与文中的任何一句话完全相同。 c)考生在做此类试题时,首先要理清整篇文章的结构和框架,了解作者是如何循序渐进的叙述故事并传达信息的。 d)抓住每段的中心句或相对重要的信息,这对解答此类问题至关重要。 ?阅读理解之目的题 此类考题需要考生理解作者写这篇文章或文中某一个部分的目的。这类考题主要包括两种问法:一时作者写整篇文章的目的;二是作者在文中提到某句话或某个观点的目的或作用。 典型问法 What is the purpose of the...? Why did he write the letter?

18年托福阅读真题附答案

The Extinction of the Dinosaurs million years ago) and the Paleocene period (65..C55 million years ago) in part by the types and amounts of rocks and fossils they contain or lack. Before the limit of 65 million years ago,marine 2.strata are rich in calcium carbonate due to accumulations of fossils of microscopic algae deposited on the sea floor. Above the 65-million-year limit,sea-floor sediments contain much less calcium carbonate ,and fossils of several families of mollusks are no longer found. In continental sediments ,dinosaur fossils ,though frequent before 65 million years ago ,are totally absent. By 3.contrast,new families of mammals appear,including large mammals for the first time. Scientists wondered for many years about what could have caused the dinosaurs' rapid disappearance at the end of the Cretaceous period,coming up with a great variety of theories and scenarios. For some, it could have been due to unfavorable genetic changes triggered by a dramatic increaseby a factor of 10,100,1,000 in cosmic-ray particles reaching the Earth after a supernova explosion somewhere in the neighborhood of the solar system. For these high-energy particles to affect life,they would have to get through the protective barrier of the Earth's magnetosphere ,the region of the upper atmosphere controlled by Earth's magnetic field. That could have happened if the cloud of particles from the supernova explosion reached the Earth during a period when the magnetosphere was weakened , something that may happen when the Earth's magnetic field changes direction. And we know that the magnetic north and south poles of the Earth switch on the average twice every million years. However,this is not the only possible explanation for dinosaur destruction . 4.Other theories have raised the possibility of strong climate changes in the tropics (but they then must be explained) . Certainly,if climate changes,the changed distributions of temperature and rainfall modify the conditions that favor one ecosystem over another. The extinction of a particular family,genus,or species may result from a complicated chain of indirect causes and effects. Over thirty years ago ,scientist Carl Sagan quoted one suggestion that the demise of the dinosaurs resulted from the disappearance of a species of fern plant that was important for dinosaur digestion. Other theories involved a worldwide cold wave following the spread of a layer of cold but not very salty water in the world's oceans ,which floated on the surface because,with its low salinity,the water was less dense. 5.Proponents of another theory that remains under consideration today postulate that the extinction of the dinosaurs corresponds to a period of intense volcanic activity. It's not a question of just one or even of a thousand eruptions comparable to the explosion of Krakatoa in 1883,one of the largest volcanic events in modern times ,but rather of a prolonged period of activity. On the Deccan plateau in India,basalt (volcanic) rocks cover more than 500,000 square kilometers (nearly 200,000 square miles),and correspond to massive lava outflows occurring precisely at the end of the Cretaceous. This sort of outflow could correspond to volcanic activity similar to the activity that drives sea-floor spreading ,with lava emerging from elongated fractures in the crust rather than from craters. 6.The volcanic convulsion that buried the Deccan plateau in lava must also have changed the composition of the atmosphere and severely affected climate. Initially,there must have been strong sudden cooling resulting from the blocking of sunlight by sulfate aerosol veils in the

2020年托福阅读模拟试题及答案(卷七)

2020年托福阅读模拟试题及答案(卷七) 托福阅读文本: Aviculturists, people who raise birds for commercial sale, have not yet learned how to simulate the natural incubation of parrot eggs in the wild. They continue to look for better ways to increase egg production and to improve chick survival rates. When parrots incubate their eggs in the wild, the temperature and humidity of the nest are controlled naturally. Heat is transferred from the bird's skin to the top portion of the eggshell, leaving the sides and bottom of the egg at a cooler temperature. This temperature gradient may be vital to successful hatching. Nest construction can contribute to this temperature gradient. Nests of loosely arranged sticks, rocks, or dirt are cooler in temperature at the bottom where the egg contacts the nesting material. Such nests also act as humidity regulators by allowing rain to drain into the bottom sections of the nest so that the eggs are not in direct contact with the water. As the water that collects in the bottom of the nest evaporates, the water vapor rises and is heated by the incubating bird, which adds significant humidity to the incubation environment. In artificial incubation programs, aviculturists remove eggs from the nests of parrots and incubate them under laboratory conditions. Most commercial incubators heat the eggs fairly evenly from top to bottom,

托福阅读超详细剖析讲解

托福阅读超详细剖析讲解,有题有真相(一) 备考托福的同学有福啦!!小编非常难得的请到了托福名师就托福阅读的备考进行超详细讲解。现在网上到处都可以搜到各式各样的备考资料,但是像今天小编与大家分享的如此详尽、如此系统的讲解,真的是凤毛菱角。希望各位同学认真学习消化。由于篇幅太长,今天先与大家分享一半的内容,另一半明天奉上。 ----------------------------------------- 在新托福考试当中,阅读是第一个部分,一共会考到3篇或者4篇文章,每篇文章700-800字左右,每篇文章之后会有13-14个题目。很多同学面对这样托福阅读文章,感觉无从下手,甚至有时即使看懂了文章,题目也无法选对,那么应该如何应对这种情况呢?在这个系列中,老师分别给大家就托福阅读的具体解题技巧进行剖析讲解,作为考前冲刺,给大家考试助力,点睛指导! 考试中一共十种题型,他们分别是: 词汇题,指代题,句子简化题,句子插入题,细节题,否定信息题,推理题,作者目的题,小结题和图表填空题。 1. 词汇题 Vocabulary questions 在托福考试当中,词汇题的主要目的是考察考生能否识别词汇在陌生语境中的含义。既然强调语境,那么通过识别生词附近的语境含义,

往往可以推测出生词的含义。我们来看一道新托福考试官方指南上的题目: Several skeletons ofanother early whale, Basilosaurus, were found in sediments left by theTethys Sea and now exposed in theSahara desert. The word exposed in the passage is closest inmeaning to A. Explained B. Visible C. Identified D. Located 这道题目很多同学会选择第四个选项(locate:坐落于…),将这个含义带入到语句当中,意思也通顺,指Basilosaurus坐落于撒哈拉沙漠。但是这里需要注意的是,托福的词汇题并不是选项带入搭配合适就一定能找到正确答案,而是应该从语境入手来选择。正确的做法是,首先查看生词附近有无并列,转折等语境上的含义暗示。本句当中,生词的前方有“and”来暗示并列,而从句子结构来看,前半句中的动词“found”,意思是“找到,发现”,那么后半句的exposed对应语境也应该强调发现某物,即找到,或者看见某物。因此这道题目的正确答案选择B(visible:可看见的)。 2. 指代题 Reference questions 指代题在托福考试中题量大约为0-2个,主要考察学生能否找到原文中代词的指代对象。解决指代题最基本的原则为:单复数与人称一致,前指且符合句意。 It has been suggested that Pakicetus fed on fishin shallow water and was not yet adapted for life in the open ocean. Itprobably bred and gave birth on land.

相关文档
相关文档 最新文档