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托福真题(附答案)
托福真题(附答案)

Section Two: Structure and Written Expression

1. crumbles readily when exposed to a moist, acid atmosphere, but the stone is durable in adry atmosphere.

(A) The surface of marble is

(B) The surface of marble, which

(C) Although the surface of marble

(D) The surface of marble

2. By using their trunks, elephants can tell the shape of an object and is rough or smooth, orhot or cold.

(A) it

(B) whether it

(C) how

(D) since it

3. In 1989 Carret Hongo was chosen as for the Pulitzer Prize in poetry.

(A) his being one of the finalists

(B) to be one of the finalists

(C) one of the finalists

(D) the one finalist who

4. The Moon is much closer to Earthis the Sun, and thus it had greater influence on the tides.

(A) unlike

(B) than

(C) but

(D) where

5. The brain of an average adult is one of the largest organs of the body, about three pounds.

(A) weighs

(B) is weighed

(C) weighing

(D) to weigh it

6. Throughout history different representations for numbers and for the basic process ofcounting.

(A) have been many

(B) there have been many

(C) many

(D) when many

7. Democratic governments constantly face the problem of balancing the individual with theneeds of society.

(A) the rights of

(B) to the rights for

(C) for the rights to

(D) with the rights by

8. Connecticut was the fifth of the original thirteen states the Constitution of the UnitedStates.

(A) ratified

(B) ratify

(C) to ratify

(D) have ratified

9. The chemical composition of sandstone is the same as

(A) that of sand

(B) that sand is

(C) sand is that

(D) what of sand

10. Hydrofoils can exceed 75 miles per hour, as compared with conventional watercraft, whosemaximum speeds approach 50 miles per hour.

(A) are rarely

(B) rarely

(C) of rarely

(D) they rarely

11. It was novelist and poet in 1968 founded Jackson State University's Institute for theStudy of the History, Life, and Culture of Black People.

(A) Margaret Walker did

(B) Margaret Walker

(C) Margaret Walker who

(D) Margaret Walker and

12. Before the Europeans arrived, American Indians were using virgin copper into ornaments,knives, and other artifacts.

(A) Which was hammering

(B) which hammered

(C) was hammered

(D) hammered

13. In western North America, form the Great Divide, which separates the areas fromwhich waters flow either eastward to the Atlantic or westward to the Pacific.

(A) the Rocky Mountains

(B) where the Rocky Mountains

(C) the Rocky Mountains in which

1

(D) there are the Rocky Mountains

14. Some ecologists believe more than 50 percent of existing species will be lost in the next100 years.

(A) because

(B) that

(C) while there is

(D) that there are 15. Almost substances expand in volume when heated and contract when cooled.

(A) all

(B) they all

(C) all of

(D) all are

16. A children's librarian often conducts story hours and other activities to help children

A B

enjoy herself while developing an interest in reading and the library's resources.

C D

17. Titanium has the strength of steel but weighs half only as much, hence its advantage

A B C

for use in aircraft.

D

18. Protective behaviors of amphibians include hiding in the presence of danger and

A B

having coloration such closely matching the environment that the animal is not

C D

obvious.

19. As the highest-paid star of the silent screen, earning a reputedly income of $20, 000

AB C

a week, Gloria Swanson epitomized the glamour of Hollywood in the 1920's.

D

20. Candles may be made by repeatedly dipping wicks in tallow, by molding, nor by

A B

pouring melted wax over the wicks and rolling them into shape.

C D

21. While models of automobiles date back as far as the late 1600's, the 1880's

A B

seen the first commercial interest in the vehicle.

C D

22. The conceptual of musical harmony is generally traced to the ninth century because

A B C

it is first mentioned in treatises of that period.

D

23. Palcontologists have examined fossil embryos and hatchlings from three type of

A B C

2

duck-billed dinosaurs to figure out how they matured.

D

24. Lightning tends to strike the nearest good conductor, and hence often strikes

A B

in same place more than once.

C D

25. When study different cultures and societies, anthropologists often focus on marriage

A B

as a contractual agreement between different parties.

C D

26. The first piloted balloon flight across the Atlantic Ocean took place at 1978.

A B CD

27. The Arts and Crafts Movement of the late nineteenth century strove to revitalizing

A handicrafts and applied arts during an era of increasing mass production.

B C D

28. When cannedusing proper methods, food suffers no loss in vitamins or another

A B C D

nutritive elements.

29. Heat exhaustion is causing by excessive loss of body fluids and body salts.

A B C D

30. Primitive humans probably did not deliberately cook food until long after they had

A B

learned to use fire for light and warm.

C D

31. The poor condition of prisoners are what concerned Dorothea Dix, an American

A B C

social worker and director of a school in Boston.

D

32. Found in the shells of lobsters, shrimp, and crabs, glucosamine is also present

A B C

in human cartilage, which covering the bones in joints.

D

33. Between 1871 until 1891, the population of Toronto more than tripled, increasing

A B C

3

from 56,000 to 181,000.

D

34. In the nineteenth century, Montreal grew into an important transportation and

A B

industrial center, aided by its many natural resources and an abundant of

C D

hydroelectric power.

35. In the initial planning for theaters, auditoriums, but any room intended primarily

A B C

for listening, acoustics is a major consideration.

D

36. The pulse that may be felt wherever an artery passes over a solid structure, such as

A B C

a bone or cartilage.

D

37. Through his essays, poems, and lectures, Ralph Waldo Emersonestablished himself

A B

as a major thinker of his time and as a figure leadingof American literature.

C D

38. The "method", which is both a style of acting a system of training for the actor,

A B

stresses inner motivation and psychological truth.

C D

39. On September 6, 1996, civil rights activist Rosa Parks was awarded the Presidential

A B

Medal of Freedom, the highest honor the United States government gives to civilian.

C D

40. Basalt, which composes most of the ocean floor, is a dark-grey rock rich in iron

A B C D

and magnesium than most surface rocks.

Section Three: Reading Comprehension Question 1-10

By far the most important United States export product in the eighteenth and nineteenth centuries was cotton, favored by the European textile industry over flax or wool because it was easy to process and soft to tile touch. Mechanization of spinning

4

Line and weaving allowed significant centralization and expansion in the textile industry during 5this period, and at the same time the demand for cotton increased dramatically. American producers were able to meet this demand largely because of tile invention of the cotton gin by Eli Whitney in 1793. Cotton could be grown throughout the South, but separating the fiber---or lint--from the seed was a laborious process. Sea island cotton was relatively

easy to process by hand, because its fibers were long and seeds were concentrated at the 10base of the flower, but it demanded a long growing season, available only along the nation's eastern seacoast. Short-staple cotton required a much shorter growing season,

but the shortness of the fibers and their mixture with seeds meant that a worker could

hand-process only about one pound per day. Whitney's gin was a hand-powered machine with revolving drums and metal teeth to pull cotton fibers away from seeds. Using the gin, 15a worker could produce up to '50 pounds of lint a day. The later development of larger gins, powered by horses, water, or steam, multiplied productivity further.

The interaction of improved processing and high demand led to the rapid spread of the cultivation of cotton and to a surge in production. It became the main American

export, dwarfing all others. In 1802, cotton composed 14 percent of total American

20exports by value. Cotton had a 36 percent share by 1810 and over a 50 percent share in 1830. In 1860, 61 percent of the value of American exports was represented by cotton.

In contrast, wheat and wheat flour composed only 6 percent of the value of American

exports in that year. Clearly, cotton was king in the trade of the young republic. The

growing market for cotton and other American agricultural products led to an

25unprecedented expansion of agricultural settlement, mostly in the eastern half of the United States---west of the Appalachian Mountains and east of the Mississippi River.

1. The main point of the passage is that the eighteenth and nineteenth centuries were a time when

(A) the European textile industry increased its demand for American export products

(B) mechanization of spinning and weaving dramatically changed the textile industry (C) cotton became a profitable crop but was still time-consuming to process

(D) cotton became the most important American export product

2. The word "favored" in line 2 is closest in meaning to

(A) preferred

(B) recommended

(C) imported

(D) included

3. All of the following are mentioned in the passage as reasons for the increased demand for cotton EXCEPT

(A) cotton's softness

(B) cotton's ease of processing

(C) a shortage of flax and wool

(D) the growth that occurred in the textile industry.

4. The word "laborious" in line 8 is closest in meaning to

(A) unfamiliar

(B) primitive

(C) skilled

(D) difficult

5. According to the passage, one advantage of sea

island cotton was its

(A) abundance of seeds

(B) long fibers

(C) long growing season

(D) adaptability to different climates

6. Which of the following can be inferred from

the passage about cotton production in the United States after the introduction of Whitney's cotton gin?

(A) More cotton came from sea island cotton

plants than before.

(B) More cotton came from short-staple cotton

plants than before.

(C) Most cotton produced was sold domestically.

(D) Most cotton produced was exported to

England.

7. The word "surge" in line 18 is closest in

meaning to

(A) sharp increase

(B) sudden stop

(C) important change

5

(D) excess amount

8. The author mentions "wheat and wheat flour" in line 22 in order to

(A) show that Americans exported more agricultural products than they imported.

(B) show the increase in the amount of wheat products exported.

(C) demonstrate the importance of cotton among American export products.

(D) demonstrate that wheat farming was becoming more profitable.

9. The word "unprecedented" in line 25 is closest in meaning to (A) slow

(B) profitable

(C) not seen before

(D) never explained

10. According to the passage, the Mississippi River was

(A) one of the boundaries of a region where new agricultural settlement took place

(B) a major source of water for agricultural crops

(C) the primary route by which agricultural crops were transported

(D) a main source of power for most agricultural machinery

Question 11-19

The origins of nest-building remain obscure, but current observation of nest-building activities provide evidence of their evolution. Clues to this evolutionary process can be

found in the activities of play and in the behavior and movements of birds during mating, Line such as incessant pulling at strips of vegetation or scraping of the soil. During the early

5 days of the reproductive cycle, the birds seem only to play with the building materials. In

preparation for mating, they engage in activities that resemble nest-building, and continue

these activities throughout and even after the mating cycle. Effective attempts at construction occur only after mating.

Although nest-building is an instinctive ability, there is considerable adaptability in

10both site selection and use of materials, especially with those species which build quite elaborate constructions. Furthermore, some element of learning is often evident since

younger birds do not build as well as their practiced elders. Young ravens, for example,

first attempt to build with sticks of quite unsuitable size, while a jackdaw's first nest

includes virtually any movable object. The novelist John Steinbeck recorded the contents

15of a young osprey nest built in his garden, which included three shirts, a bath towel, and one arrow.

Birds also display remarkable behavior in collecting building materials. Crows have been seen to tear off stout green twigs, and sparrowhawks will dive purposefully onto a

branch until it snaps and then hang upside down to break it off. Golden eagles, over

20generations of work, construct enormous nests. One of these, examined after it had been dislodged by high winds, weighed almost two tons and included foundation branches

almost two meters long. The carrying capacity of the eagles, however, is only relative to

their size ant1 most birds are able to carry an extra load of just over twenty percent of their body weight.

11. The word "obscure" in line 1 is closest in meaning to

(A) interesting

(B) unclear

(C) imperfect

(D) complex

12. According to the passage, which of the following activities is characteristic of the early part of

the reproductive cycle of birds?

(A) Selecting a mate

(B) Collecting nest-building materials

(C) Playing with nest-building materials

(D) Building a nest

13. The word "display" in line 17 is closest in

meaning to

(A) communicate

(B) imitate

(C) initiate

(D) exhibit

6

14. The novelist John Steinbeck is mentioned in line 14 because he

(A) conducted a scientific study on the behavior of ospreys

(B) was the first to describe where ospreys built their nests

(C) described the materials ospreys can use to build their nests

(D) compared the size of osprey nests with the nests of other species

15. Which of the following birds are mentioned as those that build nests that include unusual objects?

(A) Ravens

(B) Ospreys

(C) Crows

(D) Sparrowhawks

16. According to the passage, when gathering materials to build their nests, sparrowhawks do which of the following?

(A) Hang upside down

(B) Select only green twigs

(C) Use objects blowing in the wind (D) Collect more branches than necessary

17. The word "these" in line 20 refers to

(A) golden eagles

(B) generations

(C) winds

(D) nests

18. The word "load" in line 23 is closest in meaning to

(A) weight

(B) number

(C) section

(D) level

19. The author mentions twenty percent in line 23 to indicate that

(A) eagles are twenty percent bigger than most birds

(B) twenty percent of all nests include foundation branches

(C) the nests of eagles are twenty percent of larger than those of other birds

(D) birds can carry twenty percent of their own weight

Question 20-30

A survey is a study, generally in the form of an interview or a questionnaire, that provides

information concerning how people think and act. In the United States, the best-known

surveys are the Gallup poll and the Harris poll. As anyone who watches the news duringLine presidential campaigns knows, these polls have become an important part of political life in

5the United States.

North Americans are familiar with the many "person on the street? interviews on local television news shows. While such interviews can be highly entertaining, they are not

necessarily an accurate indication of public opinion. First, they reflect the opinions of only

those people who appear at a certain location. Thus, such samples can be biased in favor

10of commuters, middle-class shoppers, or factory workers, depending On which area the newspeople select. Second, television interviews tend to attract outgoing people who are

willing to appear on the air, while they frighten away others who may feel intimidated by

a camera. A survey must be based on a precise, representative sampling if it is to genuinely

reflect a broad range of the population.

15In preparing to conduct a survey, sociologists must exercise great care in the wording of questions. An effective survey question must be simple and clear enough for people to

understand it. It must also be specific enough so that there are no problems in interpreting

the results. Even questions that are less structured must be carefully phrased in order to elicit the type of information desired. Surveys can be indispensable sources of information, but

20 only if the sampling is done properly and the questions are worded accurately.

There are two main forms of surveys: the interview and the questionnaire. Each of these forms of survey research has its advantages. An interviewer can obtain a high response rate

because people find it more difficult to turn down a personal request for an interview than

7

to throw away a written questionnaire. In addition, an interviewer can go beyond written 25 questions and probe for a subject's underlying feelings and reasons. However, questionnaires

have the advantage of being cheaper and more consistent.

20. What does the passage mainly discuss?

(A) The history of surveys in North America

(B) The principles of conducting surveys

(C) Problems associated with interpreting surveys

(D) The importance of polls in American political life

21. The word "they" in line 8 refers to

(A) North Americans

(B) news shows

(C) interviews

(D) opinions

22. According to the passage, the main disadvantage of person-on-the-street interviews is that

they

(A) are not based on a representative sampling

(B) are used only on television

(C) are not carefully worded

(D) reflect political opinions

23. The word "precise" in line 13 is closest in meaning to

(A) planned

(B) rational

(C) required

(D) accurate

24. According to paragraph 3, which of the following is most important for an effective survey?

(A) A high number of respondents

(B) Carefully worded questions

(C) An interviewer's ability to measure respondents' feelings

(D) A sociologist who is able to interpret the results

25. The word "exercise" in line 15 is closest in meaning to

(A) utilize

(B) consider (C) design

(D) defend

26. The word "elicit" in line 18 is closest in meaning to

(A) compose

(B) rule out

(C) predict

(D) bring out

27. It can be inferred from the passage that one reason that sociologists may become frustrated with questionnaires is that

(A) respondents often do not complete and return questionnaires

(B) questionnaires are often difficult to read

(C) questionnaires are expensive and difficult to distribute

(D) respondents are too eager to supplement questions with their own opinions

28. According to the passage, one advantage of live interviews over questionnaires is that live interviews

(A) cost less

(B) can produce more information

(C) are easier to interpret

(D) minimize the influence of the researcher

29. The word "probe" in line 25 is closest in meaning to

(A) explore

(B) influence

(C) analyze

(D) apply

30. Which of the following terms is defined in the passage?

(A) Survey (line 1)

(B) Public opinion (line 8)

(C) Representative sampling (line 13)

(D) Response rate (line 22)

Question 31-39

Perhaps one of the most dramatic and important changes that took place in the Mesozoic era occurred late in that era, among the small organisms that populate the uppermost, sunlit portion of the oceans--the plankton. The term "plankton" is a broad

8

Line one, designating all of the small plants and animals that float about or weakly propel

5themselves through the sea. In the late stages of the Mesozoic era. during the Cretaceous period, there was a great expansion of plankton that precipitated skeletons or shells

composed of two types of mineral: silica and calcium carbonate. This development

radically changed the types of sediments that accumulated on the seafloor, because,

while the organic parts of the plankton decayed after the organisms died, their mineralized 10skeletons often survived and sank to the bottom. For the first time in the Earth's long history, very large quantities of silica skeletons, which would eventually harden into rock, began to pile up in parts of the deep sea. Thick deposits of calcareous ooze made up of

the tiny remains of the calcium carbonate-secreting plankton also accumulated as never

before. The famous white chalk cliffs of Dover, in the southeast of England, are just one 15example of the huge quantities of such material that amassed during the Cretaceous period; there are many more. Just why the calcareous plankton were so prolific during

the latter part of the Cretaceous period is not fully understood. Such massive amounts

of chalky sediments have never since been deposited over a comparable period of time.

The high biological productivity of the Cretaceous oceans also led to ideal conditions

20for oil accumulation. Oil is formed when organic material trapped in sediments is slowly buried and subjected to increased temperatures and pressures, transforming it into

petroleum. Sediments rich in organic material accumulated along the margins of the

Tethys Seaway, the tropical east-west ocean that formed when Earth's single landmass

(known as Pangaea) split apart during the Mesozoic era. Many of today's important oil

25fields are found in those sediments--in Russia, the Middle East, the Gulf of Mexico, and in the states of Texas and Louisiana in the United States.

31. What does the passage mainly discuss?

(A) How sediments were built up in oceans during the Cretaceous period

(B) How petroleum was formed in the Mesozoic era

(C) The impact of changes in oceanic animal and plant life in the Mesozoic era

(D) The differences between plankton found in the present era and Cretaceous plankton

32. The passage indicates that the Creiaceous period occurred

(A) in the early part of the Mesozoic era

(B) in the middle part of the Mesozoic era

(C) in the later part of the Mesozoic era

(D) after the Mesozoic era

33. The passage mentions all of the following aspects of plankton EXCEPT

(A) the length of their lives

(B) the level of the ocean at which they are found

(C) their movement

(D) their size

34. The word "accumulated" in line 8 is closest in meaning to

(A) depended

(B) matured

(C) dissolved

(D) collected

35. According to the passage, the most dramatic

change to the oceans caused by plankton during the Cretaceous period concerned

(A) the depth of the water

(B) the makeup of the sediment on the ocean

floor

(C) the decrease in petroleum-producing

sediment

(D) a decline in the quantity of calcareous ooze

on the seafloor

36. The "white chalk cliffs of Dover" are

mentioned in line 14 of the passage to

(A) show where the plankton sediment first began

to build up

(B) provide an example of a plankton buildup

that scientists cannot explain

(C) provide an example of the buildup of

plankton sediment

(D) indicate the largest single plankton buildup

on Earth

37. The word "prolific" in line 16 is closest in

meaning to

(A) fruitful

(B) distinct

(C) determined

9

(D) energetic

38. The word "ideal" in line 19 is closest in meaning to

(A) common

(B) clear

(C) perfect

(D) immediate 39. The word "it" in line 21 refers to

(A) biological productivity

(B) oil

(C) organic material

(D) petroleum

Question 40-50

Of all modern instruments, the violin is apparently one of the simplest. It consists in essence of a hollow, varnished wooden sound box, or resonator, and a long neck, covered with a fingerboard, along which four strings are stretched at high tension. The beauty of Linedesign, shape, and decoration is no accident: the proportions of the instrument are

5determined almost entirely by acoustical considerations. Its simplicity of appearance is deceptive. About 70 parts are involved in the construction of a violin, Its tone and its

outstanding range of expressiveness make it an ideal solo instrument. No less important.

however, is its role as an orchestral and chamber instrument. In combination with the

larger and deeper-sounding members of the same family, the violins form the nucleus

10of the modern symphony orchestra.

The violin has been in existence since about 1550. Its importance as an instrument in its own right dates from the early 1600's, when it first became standard in Italian

opera orchestras. Its stature as an orchestral instrument was raised further when in 1626 Louis XIII of France established at his court the orchestra known as Les vingt-quatre

15violons du Roy (The King's 24 Violins), which was to become widely famous later in the century.

In its early history, the violin had a dull and rather quiet tone resulting from the fact that the strings were thick and were attached to the body of the instrument very loosely.

During the eighteenth and nineteenth century, exciting technical changes were inspired 20by such composer-violinists as Vivaldi and Tartini. Their instrumental compositions demanded a fuller, clearer, and more brilliant tone that was produced by using thinner

strings and a far higher string tension. Small changes had to be made to the violin's

internal structure and to the fingerboard so that they could withstand the extra strain.

Accordingly, ,a higher standard of performance was achieved, in terms of both facility 25and interpretation. Left-hand technique was considerably elaborated, and new fingering patterns on the fingerboard were developed for very high notes.

10

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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

历年托福考试阅读真题汇总含答案

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0308托福试题 阅读(55minutes) Question 1-11 If food is allowed to stand for some time, it putrefies .When the putrefied material is examined microscopically ,it is found to be teeming with bacteria. Where do these bacteria come from , since they are not seen in fresh food? Even until the mid-nineteenth century, many people believed that such microorganisms originated by spontaneous (5 ) generation ,a hypothetical process by which living organisms develop from nonliving matter. The most powerful opponent of the theory of spontaneous generation was the French chemist and microbiologist Louis Pasteur(1822-1895).Pasteur showed that structures present in air closely resemble the microorganisms seen in putrefying materials .He did (10) this by passing air through guncotton filters, the fibers of which stop solid particles. After the guncotton was dissolved in a mixture of alcohol and ether, the particles that it had trapped fell to the bottom of the liquid and were examined on a microscope slide .Pasteur found that in ordinary air these exists a variety of solid structures ranging in size from 0.01 mm to more than 1.0 mm .Many of these bodies resembled the reproductive (15)structures of common molds, single-celled animals, and various other microbial cells . As many as 20 to 30 of them were found in fifteen liters of ordinary air ,and they could not be distinguished from the organisms found in much larger numbers in putrefying materials .Pasteur concluded that the organisms found in putrefying materials originated from the organized bodies present in the air .He postulated that these bodies are constantly (20)being deposited on all objects. Pasteur showed that if a nutrient solution was sealed in a glass flask and heated to boiling to destroy all the living organisms contaminating it, it never putrefied .The proponents of spontaneous generation declared that fresh air was necessary for spontaneous generation and that the air inside the sealed flask was affected in some way (25)by heating so that it would no longer support spontaneous generation. Pasteur constructed a swan-necked flask in which putrefying materials could he heated to boiling, but air could reenter. The bends in the neck prevented microorganisms from getting in the flask.. Material sterilized in such a flask did not putrefy. 1,What does the passage mainly discuss? (a)Pasteur’s influence on the development of the microscope. (b)The origin of the theory of spontaneous generation . (c)The effects of pasteurization on food. (d)Pasteur’s argument agai nst the theory of spontaneous generation . 2,The phrase “teeming with ”in line 2 is closest in meaning to (a)full of (b)developing into (c)resistant to (d)hurt by 3,Which of the following questions did the theory of spontaneous generation attempt to answer? (a)What is the origin of the living organisms are seen on some food? (b)How many types of organisms can be found on food? (c)What is the most effective way to prepare living organisms for microscopic examination? (d)How long can food stand before it putrefies? 4,The word “resemble” in line 9 is closest in meaning to

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