托福阅读真题TOEFL_托福阅读真题pdf百度云

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篇1:TOEFL托福阅读真题精选

PASSAGE 34

Matching the influx of foreign immigrants into the larger cities of the United States during the late nineteenth century was a domestic migration, from town and farm to city, within the United States. The country had been overwhelmingly rural at the beginning of the century, with less than 5 percent of Americans living in large towns or cities. The proportion of urban population began to grow remarkably after 1840, increasing from 11 percent that year to 28 percent by 1880 and to 46 percent by 1900. A country with only 6 cities boasting a population of more than 8,000 in 1800 had become one with 545 such cities in 1900. Of these, 26 had a population of more than 100,000 including 3 that held more than a million people. Much of the migration producing an urban society came from smaller towns within the United States, but the combination of new immigrants and old American settlers on America's urban frontier in the late nineteenth century proved extraordinary.

The growth of cities and the process of industrialization fed on each other. The agricultural revolution stimulated many in the countryside to seek a new life in the city and made it possible for fewer farmers to feed the large concentrations of people needed to provide a workforce for growing numbers of factories. Cities also provided ready and convenient markets for the products of industry, and huge contracts in transportation and construction — as well as the expanded market in consumer goods — allowed continued growth of the urban sector of the overall economy of the Untied States.

Technological developments further stimulated the process of urbanization. One example is the Bessemer converter (an industrial process for manufacturing steel), which provided steel girders for the construction of skyscrapers. The refining of crude oil into kerosene, and later the development of electric lighting as well as of the telephone, brought additional comforts to urban areas that were unavailable to rural Americans and helped attract many of them from the farms into the cities. In every era the lure of the city included a major psychological element for country people: the bustle and social interaction of urban life seemed particularly intriguing to those raised in rural isolation.

1. What aspects of the United States in the nineteenth century does the passage mainly discuss?

(A) Technological developments

(B) The impact of foreign immigrants on cities

(C) Standards of living

(D) The relationship between industrialization and urbanization

2. The word influx in line 1 is closest in meaning to

(A) working

(B) processing

(C) arrival

(D) attraction

3. The paragraph preceding the passage most probably discuss

(A) foreign immigration

(B) rural life

(C) the agricultural revolution

(D) famous cities of the twentieth century

4. What proportion of population of the United States was urban in 1900?

(A) Five percent

(B) Eleven percent

(C) Twenty-eight percent

(D) Forty-six percent

5. The word extraordinary in line 12 is closet in meaning to

(A) expensive

(B) exceptional

(C) supreme

(D) necessary

6. The phrase each other in line 13 refers to

(A) foreign immigrants and domestic migrants

(B) farms and small towns

(C) growth of cities and industrialization

(D) industry and transportation

7. The word stimulated in line 14 is closest in meaning to

(A) forced

(B) prepared

(C) limited

(D) motivated

8. Why does the author mention electric lighting and the telephone in line 23?

(A) They contributed to the agricultural revolution

(B) They are examples of the conveniences of city life

(C) They were developed by the same individual.

(D) They were products of the Bessemer converter.

9. The word them in line 25 refers to

(A) urban areas

(B) rural Americans

(C) farms

(D) cities

10. The word era in line 25 is closest in meaning to

(A) period of time

(B) location

(C) action

(D) unique situation

11. The word intriguing in line 27 is closest in meaning to

(A) profitable

(B) attractive

(C) comfortable

(D) challenging

PASSAGE 34 DCADB CDBBA B

篇2:托福阅读真题TOEFL

PASSAGE 25

The history of clinical nutrition, or the study of the relationship between health and how the body takes in and utilizes food substances, can be divided into four distinct eras: the first began in the nineteenth century and extended into the early twentieth century when it was recognized for the first time that food contained constituents that were essential for human function and that different foods provided different amounts of these essential agents. Near the end of this era, research studies demonstrated that rapid weight loss was associated with nitrogen imbalance and could only be rectified by providing adequate dietary protein associated with certain foods.

The second era was initiated in the early decades of the twentieth century and might be called the vitamin period. Vitamins came to be recognized in foods, and deficiency syndromes were described. As vitamins became recognized as essential food constituents necessary for health, it became tempting to suggest that every disease and condition for which there had been no previous effective treatment might be responsive to vitamin therapy. At that point in time, medical schools started to become more interested in having their curricula integrate nutritional concepts into the basic sciences. Much of the focus of this education was on the recognition of vitamin deficiency symptoms. Herein lay the beginning of what ultimately turned from ignorance to denial of the value of nutritional therapies in medicine. Reckless claims were made for effects of vitamins that went far beyond what could actually be achieved from the use of them.

In the third era of nutritional history in the early 1950's to mid-1960s, vitamin therapy began to fall into disrepute. Concomitant with this, nutrition education in medical schools also became less popular. It was just a decade before this that many drug companies had found their vitamin sales skyrocketing and were quick to supply practicing physicians with generous samples of vitamins and literature extolling the virtue of supplementation for a variety of health-related conditions. Expectations as to the success of vitamins in disease control were exaggerated. As is known in retrospect, vitamin and mineral therapies are much less effective when applied to health-crisis conditions than when applied to long-term problems of undernutrition that lead to chronic health problems.

1. What does the passage mainly discuss?

(A) The effects of vitamins on the human body

(B) The history of food preferences from the nineteenth century to the present

(C) The stages of development of clinical nutrition as a field of study

(D) Nutritional practices of the nineteenth century

2. It can be inferred from the passage that which of the following discoveries was made during the first era in the history of nutrition?

(A) Protein was recognized as an essential component of diet.

(B) Vitamins were synthesized from foods.

(C) Effective techniques of weight loss were determined.

(D) Certain foods were found to be harmful to good health.

3. The word tempting in line 12 is closest in meaning to

(A) necessary

(B) attractive

(C) realistic

(D) correct

4. It can be inferred from the passage that medical schools began to teach concepts of nutrition

in order to

(A) convince medical doctors to participate in research studies on nutrition

(B) encourage medical doctors to apply concepts of nutrition in the treatment of disease

(C) convince doctors to conduct experimental vitamin therapies on their patients

(D) support the creation of artificial vitamins

5. The word Reckless in line 18 is closest in meaning to

(A) recorded

(B) irresponsible

(C) informative

(D) urgent

6. The word 'them in line 19 refers to

(A) therapies

(B) claims

(C) effects

(D) vitamins

7. Why did vitamin therapy begin losing favor in the 1950's

(A) The public lost interest in vitamins.

(B) Medical schools stopped teaching nutritional concepts.

(C) Nutritional research was of poor quality

(D) Claims for the effectiveness of vitamin therapy were seen to be exaggerated.

8. The phrase concomitant with in line 21 is closest in meaning to

(A) in conjunction with

(B) prior to

(C) in dispute with

(D) in regard to

9. The word skyrocketing in line 23 is closest in meaning to

(A) internationally popular

(B) increasing rapidly

(C) acceptable

(D) surprising

10. The word extolling in line 24 is closest in meaning to

(A) analyzing

(B) questioning

(C) praising

(D) promising

11. The paragraph following the passage most probably discusses

(A) the fourth era of nutrition history

(B) problems associated with undernutrition

(C) how drug companies became successful

(D) why nutrition education lost its appeal

PASSAGE 25 CABBB DDABC A

篇3:TOEFL托福阅读真题

PASSAGE 22

Throughout the nineteenth century and into the twentieth, citizens of the United States maintained a bias against big cities. Most lived on farms and in small towns and believed cities to be centers of corruption, crime, poverty, and moral degradation. Their distrust was caused, in part, by a national ideology that proclaimed farming the greatest occupation and rural living superior to urban living. This attitude prevailed even as the number of urban dwellers increased and cities became an essential feature of the national landscape. Gradually, economic reality overcame ideology. Thousands abandoned the precarious life on the farm for more secure and better paying jobs in the city. But when these people migrated from the countryside, they carried their fears and suspicious with them. These new urbanities, already convinced that cities were overwhelmed with great problems, eagerly embraced the progressive reforms that promised to bring order out of the chaos of the city.

One of many reforms came in the area of public utilities. Water and sewerage systems were usually operated by municipal governments, but the gas and electric networks were privately owned. Reformers feared that the privately owned utility companies would charge exorbitant rates for these essential services and deliver them only to people who could afford them. Some city and state governments responded by regulating the utility companies, but a number of cities began to supply these services themselves. Proponents of these reforms argued that public ownership and regulation would insure widespread access to these utilities and guarantee a fair price.

While some reforms focused on government and public behavior, others looked at the cities as a whole. Civic leaders, convinced that physical environment influenced human behavior, argued that cities should develop master plans to guide their future growth and development. City planning was nothing new, but the rapid industrialization and urban growth of the late nineteenth century took place without any consideration for order. Urban renewal in the twentieth century followed several courses. Some cities introduced plans to completely rebuild the city core. Most other cities contented themselves with zoning plans for regulating future growth. Certain parts of town were restricted to residential use, while others were set aside for industrial or commercial development.

1. What does the passage mainly discuss?

(A) A comparison of urban and rural life in the early twentieth century

(B) The role of government in twentieth century urban renewal

(C) Efforts to improve urban life in the early twentieth century

(D) Methods of controlling urban growth in the twentieth century

2. The word bias in line 2 is closest in meaning to

(A) diagonal

(B) slope

(C) distortion

(D) prejudice

3. The first paragraph suggests that most people who lived in rural areas

(A) were suspicious of their neighbors

(B) were very proud of their lifestyle

(C) believed city government had too much power

(D) wanted to move to the cities

4. In the early twentieth century, many rural dwellers migrated to the city in order to

(A) participate in the urban reform movement

(B) seek financial security

(C) comply with a government ordinance

(D) avoid crime and corruption

5. The word embraced in line 11 is closest in meaning to

(A) suggested

(B) overestimated

(C) demanded

(D) welcomed

6. What concern did reformers have about privately owned utility companies?

(A) They feared the services would not be made available to all city dwellers.

(B) They believed private ownership would slow economic growth

(C) They did not trust the companies to obey the government regulations.

(D) They wanted to ensure that the services would be provided to rural areas.

7. The word exorbitant in line 16 is closest in meaning to

(A) additional

(B) expensive

(C) various

(D) modified

8. All of the following were the direct result of public utility reforms EXCEPT

(A) local governments determined the rates charged by private utility companies

(B) some utility companies were owned and operated by local governments

(C) the availability of services was regulated by local government

(D) private utility companies were required to pay a fee to local governments

9. The word Proponents in line 18 is closest in meaning to

(A) Experts

(B) Pioneers

(C) Reviewers

(D) Supporters

10. Why does the author mention industrialization (line 24)?

(A) To explain how fast urban growth led to poorly designed cities

(B) To emphasize the economic importance of urban areas

(C) To suggest that labor disputes had become an urban problem

(D) To illustrate the need for construction of new factories

答案:CDBBD ABDDA

篇4:托福阅读真题TOEFL

PASSAGE 19

The principal difference between urban growth in Europe and in the North American colonies was the slow evolution of cities in the former and their rapid growth in the latter. In Europe they grew over a period of centuries from town economies to their present urban structure. In North America, they started as wilderness communities and developed to mature urbanism in little more than a century.

In the early colonial days in North America, small cities sprang up along the Atlantic Coastline, mostly in what are now New England and Middle Atlantic states in the United States and in the lower Saint Lawrence valley in Canada. This was natural because these areas were nearest to England and France, particularly England, from which most capital goods (assets such as equipment) and many consumer goods were imported. Merchandising establishments were, accordingly, advantageously located in port cities from which goods could be readily distributed to interior settlements. Here, too, were the favored locations for processing raw materials prior to export. Boston, Philadelphia, New York, Montreal, and other cities flourished, and, as the colonies grew, these cities increased in importance.

This was less true in the colonial South, where life centered around large farms, known as plantations, rather than around towns, as was the case in the areas further north along the Atlantic coastline. The local isolation and the economic self-sufficiency of the plantations were antagonistic to the development of the towns. The plantations maintained their independence because they were located on navigable streams and each had a wharf accessible to the small shipping of that day. In fact, one of the strongest factors in the selection of plantation land was the desire to have its front on a water highway.

When the United States became an independent nation in 1776, it did not have a single city as large as 50,000 inhabitants, but by 1820 it had a city of more than 10,000 people, and by 1880 it had recorded a city of over one million. It was not until after 1823, after the mechanization of the spinning had weaving industries, that cities started drawing young people away from farms.

Such migration was particularly rapid following the Civil War (1861-1865).

1. What does the passage mainly discuss?

(A) Factors that slowed the growth of cities in Europe.

(B) The evolution of cities in North America

(C) Trade between North American and European cities

(D) The effects of the United Sates' independence on urban growth in New England.

2. The word they in line 4 refers to

(A) North American colonies

(B) cities

(C) centuries

(D) town economies

3. The passage compares early European and North American cities on the basis of which of the

following?

(A) Their economic success

(B) The type of merchandise they exported

(C) Their ability to distribute goods to interior settlements

(D) The pace of their development

4. The word accordingly in line 11 is closest in meaning to

(A) as usual

(B) in contrast

(C) to some degree

(D) for that reason

5. According to the passage , early colonial cities were established along the Atlantic coastline of

North America due to

(A) an abundance of natural resources

(B) financial support from colonial governments

(C) proximity to parts of Europe

(D) a favorable climate

6. The passage indicates that during colonial times, the Atlantic coastline cities prepared which of

the following for shipment to Europe?

(A) Manufacturing equipment

(B) Capital goods

(C) Consumer goods

(D) Raw materials

7. According to the passage , all of the following aspects of the plantation system influenced the

growth of southern cities EXCEPT the

(A) location of the plantations

(B) access of plantation owners to shipping

(C) relationships between plantation residents and city residents

(D) economic self-sufficiency of the plantations

8. It can be inferred from the passage that, in comparison with northern cities, most southern

cities were

(A) more prosperous

(B) smaller

(C) less economically self-sufficient

(D) tied less closely to England than to France

9. The word recorded in line 26 is closest in meaning to

(A) imagined

(B) discovered

(C) documented

(D) planned

10. The word drawing in line 28 is closest in meaning to

(A) attracting

(B) employing

(C) instructing

(D) representing

11. The passage mentions the period following the Civil War (line 29) because it was a time of

(A) significant obstacles to industrial growth

(B) decreased dependence on foreign trade

(C) increased numbers of people leaving employment on farms

(D) increased migration from northern states to southern states

答案:BBDDC DCBCA C

篇5:TOEFL托福阅读真题

PASSAGE 13

Any rock that has cooled and solidified from a molten state is an igneous rock. Therefore, if the Earth began as a superheated sphere in space, all the rocks making up its crust may well have been igneous and thus the ancestors of all other rocks. Even today, approximately 95 percent of the entire crust is igneous. Periodically, molten material wells out of the Earth's interior to invade the surface layers or to flow onto the surface itself. This material cools into a wide variety of igneous rocks. In the molten state, it is called magma as it pushes into the crust and lava when it runs out onto the surface.

All magma consists basically of a variety of silicate minerals (high in silicon-oxygen compounds), but the chemical composition of any given flow may differ radically from that of any other. The resulting igneous rocks will reflect these differences. Igneous rocks also vary in texture as well as chemistry. Granite, for instance, is a coarse-grained igneous rock whose individual mineral crystals have formed to a size easily seen by the naked eye. A slow rate of cooling has allowed the crystals to reach this size. Normally, slow cooling occurs when the crust is invaded by magma that remains buried well below the surface. Granite may be found on the surface of the contemporary landscape, but from its coarse texture we know that it must have formed through slow cooling at a great depth and later been laid bare by erosion. Igneous rocks with this coarse-grained texture that formed at depth are called plutonic.

On the other hand, if the same magma flows onto the surface and is quickly cooled by the atmosphere, the resulting rock will be fine-grained and appear quite different from granite, although the chemical composition will be identical. This kind of rock is called rhyolite. The most finely grained igneous rock is volcanic glass or obsidian, which has no crystals. Some researchers believe this is because of rapid cooling; others believe it is because of a lack of water vapor and other gases in the lava. The black obsidian cliffs of Yellowstone National Park are the result of a lava flow of basalt running head on into a glacier. Some of the glacier melted on contact, but suddenly there also appeared a huge black mass of glassy stone.

1. In the first paragraph, the author mentions that 95% of the Earth's crust is composed of

igneous rock to support the idea that

(A) the Earth began as a molten mass

(B) a thin layer of magma flows beneath the Earth's crust

(C) the minerals found in igneous rock are very common

(D) igneous rock is continually being formed

2. The word invade in line 5 is closest in meaning to

(A) move into

(B) neutralize

(C) cover

(D) deposit

3. The word contemporary in line 15 is closest in meaning to

A) vast

(B) natural

(C) existing

(D) uneven

4. The word it in line 16 refers to

(A) granite

(B) surface

(C) landscape

(D) texture

5. Granite that has been found above ground has been

(A) pushed up from below the crust by magma

(B) produced during a volcanic explosion

(C) gradually exposed due to erosion

(D) pushed up by the natural shifting of the Earth

6. Which of the following is produced when magma cools rapidly?

(A) granite

(B) plutonic rock

(C) rhyolite

(D) mineral crystals

7. The word finely in line 22 is closest in meaning to

(A) minutely

(B) loosely

(C) sensitively

(D) purely

8. Which of the following is another name for volcanic glass?

(A) Plutonic rock

(B) Crystal

(C) Lava

(D) Obsidian

篇6:TOEFL托福阅读真题精选

PASSAGE 35

The observation of the skies has played a special part in the lives and cultures of peoples since the earliest of times. Evidence obtained from a site known as the Hole in the Rock, in Papago Park in Phoenix, Arizona, indicates that it might have been used as an observatory by a prehistoric people known as the Hohokam.

The physical attributes of the site allow its use as a natural calendar/clock. The hole at Hole in the Rock is formed by two large overhanging rocks coming together at a point, creating a shelter with an opening large enough for several persons to pass through. The northeast-facing overhang has a smaller opening in its roof. It is this smaller hole that produces the attributes that may have been used as a calendar/clock.

Because of its location in the shelter's roof, a beam of sunlight can pass through this second hole and cast a spot onto the shelter's wall and floor. This spot of light travels from west to east as the sun moves across the sky. It also moves from north to south and back again as the Earth travels around the Sun, the west-to-east movement could have been used to establish a daily clock, much like a sundial, while the north-to-south movement could have been used to establish a seasonal calendar.

The spot first appears and starts down the surface of the wall of the shelter at different times of the morning depending on the time of the year. The spot grows in size from its first appearance until its maximum size is achieved roughly at midday. It then continues its downward movement until it reaches a point where it jumps to the floor of the shelter. As the Sun continues to move to the west, the spot continues to move across the shelter floor and down the butte, or hill, toward a group of small boulders. If a person is seated on a certain one of these rocks as the spot reaches it, the Sun can be viewed through the calendar hole. This occurs at different times in the afternoon depending on the time of year.

1. What does the passage mainly discuss?

(A) observations of the stars by ancient people

(B) rock formations of Arizona

(C) a site used by ancient people to measure time

(D) the movement of the earth around the Sun

2. The word obtained in line 2 is closest in meaning to

(A) acquired

(B) transported

(C) covered

(D) removed

3. The word attributes in line 5 is closest in meaning to

(A) changes

(B) characteristics

(C) locations

(D) dimensions

4. The word its in line 10 refers to

(A) roof

(B) beam

(C) hole

(D) spot

5. The word establish in line 15 is closest in meaning to

(A) create

(B) locate

(C) consult

(D) choose

6. Which of the following is NOT true of the spot of light?

(A) It is caused by sunlight passing through a hole.

(B) It travels across the roof of the shelter.

(C) Its movement is affected by the position of the Sun.

(D) It movement could have been used to estimate the time of day.

7. From which of the following can be the time of year be determined?

(A) The movement of the spot of light from west to east

(B) The speed with which the spot of light moves

(C) The movement of the spot of light from north to south

(D) The size of the sport of light at midday

8. The word roughly in line 18 is closest in meaning to

(A) finally

(B) harshly

(C) uneasily

(D) approximately

9. The passage mentions that the Hole in the Rock was used as all of the following EXCEPT

(A) a calendar

(B) a home

(C) a clock

(D) an observatory

10. Which of the following can be inferred from the fourth paragraph?

(A) The boulders are located below the rock shelter.

(B) The person seated on the rock cannot see the shelter.

(C) After it passes the boulders, the spot of light disappears.

(D) The spot of light is largest when it first appears.

PASSAGE 35 CABCA BCDBA

篇7:TOEFL托福阅读真题精选

PASSAGE 36

The year 1850 may be considered the beginning of a new epoch in America art, with respect to the development of watercolor painting. In December of that year, a group of thirty artists gathered in the studio of John Falconer in New York City and drafted both a constitution and bylaws, establishing The Society for the Promotion of Painting in Water Color. In addition to securing an exhibition space in the Library Society building in lower Manhattan, the society founded a small school for the instruction of watercolor painting. Periodic exhibitions of the members' paintings also included works by noted English artists of the day, borrowed from embryonic private collections in the city. The society's activities also included organized sketching excursions along the Hudson River. Its major public exposure came in 1853, when the society presented works by its members in the Industry of All Nations section of the Crystal Palace Exposition in New York.

The society did not prosper, however, and by the time of its annual meeting in 1854 membership had fallen to twenty-one. The group gave up its quarters in the Library Society building and returned to Falconer's studio, where it broke up amid dissension. No further attempt to formally organize the growing numbers of watercolor painters in New York City was made for more than a decade. During that decade, though, Henry Warren's Painting in Water Color was published in New York City in 1856 — the book was a considerable improvement over the only other manual of instruction existing at the time, Elements of Graphic Art, by Archibald Roberson, published in 1802 and by the 1850's long out of print.

In 1866 the National Academy of Design was host to an exhibition of watercolor painting in its elaborate neo-Venetian Gothic building on Twenty-Third Street in New York City. The exhibit was sponsored by an independent group called The Artists Fund Society. Within a few months of this event, forty-two prominent artists living in and near New York City founded The American Society of Painters in Water Colors.

1. This passage is mainly about

(A) the most influential watercolor painters in the mid-1800's

(B) efforts to organize watercolor painters in New York City during the mid-1800's

(C) a famous exhibition of watercolor paintings in New York City in the mid-1800's

(D) styles of watercolor painting in New York City during the mid-1800's

2. The year 1850 was significant in the history of watercolor painting mainly because

(A) a group of artists established a watercolor painting society

(B) watercolor painting was first introduced to New York City

(C) John Falconer established his studio for watercolor painters

(D) The first book on watercolor painting was published

3. The word securing in line 5 is closest in meaning to

(A) locking

(B) creating

(C) constructing

(D) acquiring

4. All of the following can be inferred about the Society for the promotion of Painting in

Watercolor EXCEPT:

(A) The society exhibited paintings in lower Manhattan.

(B) Instruction in watercolor painting was offered by members of the society

(C) The society exhibited only the paintings of its members.

(D) Scenes of the Hudson River appeared often in the work of society members.

5. The exhibition at the Crystal Palace of the works of the Society for the Promotion of Painting in

Watercolor was significant for which of the following reasons?

(A) It resulted in a dramatic increase in the popularity of painting with watercolor.

(B) It was the first time an exhibition was funded by a private source.

(C) It was the first important exhibition of the society's work.

(D) It resulted in a large increase in the membership of the society.

6. The word it in line 15 refers to

(A) time

(B) group

(C) building

(D) studio

7. Which of the following is true of watercolor painters in New York City in the late 1850's?

(A) They increased in number despite a lack of formal organization.

(B) They were unable to exhibit their paintings because of the lack of exhibition space.

(C) The Artists Fund Society helped them to form The American Society of Painters in Water

Colors.

(D) They formed a new society because they were not allowed to join groups run by other kinds

of artists.

8. Henry Warren's Painting in Water Color was important to artists because it

(A) received an important reward

(B) was the only textbook published that taught painting

(C) was much better than an earlier published fundamental of instruction

(D) attracted the interest of art collectors

9. The word considerable in line 19 is closest in meaning to

(A) sensitive

(B) great

(C) thoughtful

(D) planned

10. The year 1866 was significant for watercolor painting for which of the following reasons?

(A) Elements of Graphic Art was republished.

(B) Private collections of watercolors were first publicly exhibited.

(C) The neo-Venetian Gothic building on Twenty-Third Street in New York City was built.

(D) The National Academy of Design held an exhibition of watercolor paintings.

11. The word prominent in line 25 is closest in meaning to

(A) wealthy

(B) local

(C) famous

(D) organized

PASSAGE 36 BADCC BACBD C

篇8:托福阅读真题TOEFL

PASSAGE 27

The mineral particles found in soil range in size from microscopic clay particles to large boulders. The most abundant particles — sand, silt, and clay — are the focus of examination in studies of soil texture. Texture is the term used to describe the composite sizes of particles in a soil sample, typically several representative handfuls.

To measure soil texture, the sand, silt, and clay particles are sorted out by size and weight. The weights of each size are then expressed as a percentage of the sample weight. In the field, soil texture can be estimated by extracting a handful of soil and squeezing the damp soil into three basic shapes; (1) cast, a lump formed by squeezing a sample in a clenched fist; (2) thread, a pencil shape formed by rolling soil between the palms; and (3) ribbon, a flatfish shape formed by squeezing a small sample between the thumb and index finger. The behavioral characteristics of the soil when molded into each of these shapes, if they can be formed at all, provide the basis for a general textural classification. The behavior of the soil in the hand test is determined by the amount of clay in the sample. Clay particles are highly cohesive, and when dampened, behave as a plastic. Therefore the higher the clay content in a sample, the more refined and durable the shapes into which it can be molded.

Another method of determining soil texture involves the use of devices called sediment sieves, screens built with a specified mesh size. When the soil is filtered through a group of sieves, each with a different mesh size, the particles become grouped in corresponding size categories. Each category can be weighed to make a textural determination. Although sieves work well for silt, sand, and larger particles, they are not appropriate for clay particles. Clay is far too small to sieve accurately; therefore, in soils with a high proportion of clay, the fine particles are measured on the basis of their settling velocity when suspended in water. Since clays settle so slowly, they are easily segregated from sand and silt. The water can be drawn off and evaporated, leaving a residue of clay, which can be weighed.?

1. What does the passage mainly discuss?

(A) Characteristics of high quality soil

(B) Particles typically found in most soils

(C) How a high clay content affects the texture of soil

(D) Ways to determine the texture of soil

2. The author mentions several representative handfuls in line 4 in order to show

(A) the range of soil samples

(B) the process by which soil is weighed

(C) the requirements for an adequate soil sample

(D) how small soil particles are weighted

3. The phrase sorted out in line 5 is closest in meaning to

(A) mixed

(B) replaced

(C) carried

(D) separated

4. It can be inferred that the names of the three basic shapes mentioned in paragraph 2 reflect

(A) the way the soil is extracted

(B) the results of squeezing the soil

(C) the need to check more than one handful

(D) the difficulty of forming different shapes

5. The word dampened in line 14 is closest in meaning to

(A) damaged

(B) stretched

(C) moistened

(D) examined

6. Which of the following can be inferred from the passage about a soil sample with little or no

clay in it?

(A) It is not very heavy.

(B) It may not hold its shape when molded.

(C) Its shape is durable

(D) Its texture cannot be classified

7. The word they in line 21 refers to

(A) categories

(B) sieves

(C) larger particles

(D) clay particles

8. It can be inferred from the passage that the sediment sieve has an advantage over the hand

test in determining soil texture because

(A) using the sieve takes less time

(B) the sieve can measure clay

(C) less training is required to use the sieve

(D) the sieve allows for a more exact measure

9. During the procedure described in paragraph 3, when clay particles are placed into water they

(A) stick to the sides of the water container

(B) take some time to sink to the bottom

(C) separate into different sizes

(D) dissolve quickly

10. The word fine in line 24 is closest in meaning to

(A) tiny

(B) many

(C) excellent

(D) various

11. All of the following words are defined in the passage EXCEPT

(A) texture (line 3)

(B) ribbon (line 10)

(C) sediment sieves (line 18)

(D) evaporated (line 25)

PASSAGE 27 DADBC BBDBA D

篇9:TOEFL托福阅读真题

PASSAGE 14

Television has transformed politics in the United States by changing the way in which information is disseminated, by altering political campaigns, and by changing citizen's patterns of response to politics. By giving citizens independent access to the candidates, television diminished the role of the political party in the selection of the major party candidates. By centering politics on the person of the candidate, television accelerated the citizen's focus on character rather than issues.

Television has altered the forms of political communication as well. The messages on which most of us rely are briefer than they once were. The stump speech, a political speech given by traveling politicians and lasting 11/2 to 2 hours, which characterized nineteenth-century political discourse, has given way to the 30-second advertisement and the 10 second sound bite in broadcast news. Increasingly the audience for speeches is not that standing in front of the politician but rather the viewing audience who will hear and see a snippet of the speech on the news.

In these abbreviated forms, much of what constituted the traditional political discourse of earlier ages has been lost. In 15 or 30 seconds, a speaker cannot establish the historical context that shaped the issue in question, cannot detail the probable causes of the problem, and cannot examine alternative proposals to argue that one is preferable to others. In snippets, politicians assert but do not argue.

Because television is an intimate medium, speaking through it require a changed political style that was more conversational, personal, and visual than that of the old-style stump speech. Reliance on television means that increasingly our political world contains memorable pictures rather than memorable words. Schools teach us to analyze words and print. However, in a word in which politics is increasingly visual, informed citizenship requires a new set of skills.

Recognizing the power of television's pictures, politicians craft televisual, staged events, called pseudo-event, designed to attract media coverage. Much of the political activity we see on television news has been crafted by politicians, their speechwriters, and their public relations advisers for televised consumption. Sound bites in news and answers to questions in debates increasingly sound like advertisements.

1. What is the main point of the passage ?

(A) Citizens in the United States are now more informed about political issues because of

television coverage.

(B) Citizens in the United States prefer to see politicians on television instead of in person.

(C) Politics in the United States has become substantially more controversial since the

introduction of television.

(D) Politics in the United States has been significantly changed by television

.2. The word disseminated in line 2 is closest in meaning to

(B) discussed

(A) analyzed (C) spread

(D) stored

3. It can be inferred that before the introduction of television, political parties

(A) had more influence over the selection of political candidates

(B) spent more money to promote their political candidates

(C) attracted more members

(D) received more money

4. The word accelerated in line 5 is closest in meaning to

(A) allowed

(B) increased

(C) required

(D) started

5. The author mentions the stump speech in line 7 as an example of

(A) an event created by politicians to attract media attention

(B) an interactive discussion between two politicians

(C) a kind of political presentation typical of the nineteenth century

(D) a style of speech common to televised political events

6. The phrase given way to in line 10 is closest in meaning to

(A) added interest to

(B) modified

(C) imitated

(D) been replaced by

7. The word that in line 12 refers to

(A) audience

(B) broadcast news

(C) politician

(D) advertisement

8. According to the passage , as compared with televised speeches, traditional political discourse

was more successful at

(A) allowing news coverage of political candidates

(B) placing political issues within a historical context

(C) making politics seem more intimate to citizens

(D) providing detailed information about a candidates private behavior

9. The author states that politicians assert but do not argue (line 18) in order to suggest that

politicians

(A) make claims without providing reasons for the claims

(B) take stronger positions on issues than in the past

(C) enjoy explaining the issue to broadcasters

(D) dislike having to explain their own positions on issues to citizens

10. The word Reliance in line 21 is closest in meaning to

(A) abundance

(B) clarification

(C) dependence

(D) information

11. The purpose of paragraph 4 is to suggest that

(A) politicians will need to learn to become more personal when meeting citizens

(B) politicians who are considered very attractive are favored by citizens over politicians who are

less attractive

(C) citizens tend to favor a politician who analyzed the issue over one who does not

(D) citizens will need to learn how to evaluate visual political images in order to become better

informed

12. According to paragraph 5, staged political events are created so that politicians can

(A) create more time to discuss political issues

(B) obtain more television coverage for themselves

(C) spend more time talking to citizens in person

(D) engages in debates with their opponents

13. Which of the following statements is supported by the passage ?

(A) Political presentations today are more like advertisements than in the past.

(B) Politicians today tend to be more familiar with the views of citizens than in the past.

(C) Citizens today are less informed about a politician's character than in the past.

(D) Political speeches today focus more on details about issues than in the past.

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