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1996年5月托福全真試題

作者:   發(fā)布時(shí)間:2007-05-14 16:48:53  來源:
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96年5月 托福聽力文字

1. Would you like some milk in your coffee?
Please.
What does the woman mean?

2. Could you help bother me plan a surprise party for Meg?
Sure. What can I do?
What does the woman mean?

3. Let's jog for another mile.
I'll try. But I'm running out of steam.
What does the man mean?

4. Should we call Marsha and tell her about the meeting?
I'm not sure. It's up to you.
What does the man imply?

5. I can't seem to solve this problem.
Neither can I.
What does the woman say about the problem?

6. Hello. I'm calling to see of the summer position you advertised in the paper. Is it still available?
Uh, yes. Certainly. When could you come to the office for an interview?
What will the man probably do?

7. It took me five days to drive down to Florida.
Five days? I could've walked there in less time.
What does the woman mean?

8. Excuse me, did anybody find a black umbrella after the last show? I left it under my chair.
As a matter of fact, we did. Check it at the ticket counter. That's where we turn it the lost-and-found items.
What does the man suggest the woman do?

9. I spent the whole weekend totally absorbed in this biography.
And you still haven't finished reading it?
What can be inferred about the biography?

10. You haven't phoned Harry yet, have you?
As a matter of fact, I have.
What does the man mean?

11. I can't seem to find my photo album.
I think Mary is looking at it in the living room.
What does the man mean?

12. Did you hear that Mitchell turned down that job?
Yeah. The hours were convenient, but she wouldn't have been able to make ends meet.
What does the man say about Mitchell?

13. Is there a bus I can get to the station?
There is. But you can't rely on it. I can give you a ride if you can wait while I put these things away.
What is the woman going to do?

14. I hate memorizing vocabulary.
Well, it's part of learning a second language so there not whole at all you can do about it.
What does the woman tell the man?

15. Have you had a chance to wear your new shirt yet?
That reminds me. I've been meaning to exchange it to a larger size.
What does the man imply about the shirt?

16. Did you tell Carl that the concert starts at eight?
I've tried several times, but the line's been busy.
What does the man mean?

17. I had the brown paper and the string. Could you hand me the tape and the scissors please?
Sure. Here they are. But remember all this has to be weighted before it goes to.
What is the man probably doing?

18. Andrew likes his new place. But he is not too happy about all the noise.
What did he expect? He is right next to the airport.
What does the woman mean?

19. I don't remember exactly what the lab hours are. But they are posted on the door.
I just checked that schedule and it says that the lab opens at ten. But it's all locked up.
What can be inferred about the lab?

20. The subway is running behind schedule, and traffic is backed up for blocks. I don't know if we'll make the 7:15 show.
It's a beautiful night. Let's try to get there on foot. And if we don't make it. Let's just have dinner near the theater.
What does the woman suggest they do?

21. We've been working on this proposal for so long that my eyes are starting to blur.
Why don't we get out of here? We can wrap it up later.
What does the woman mean?.

22. That was really an interesting piece of music. How did you find out about it?
They played it in the classical station last week.
What does the man say about the music?

23. I spent the whole weekend working on that chemistry assignment.
Don't tell me. I have to do the whole thing tonight.
What does the woman imply?

24. Come to the movies with us. Everyone needs to take a break once in a while.
I guess I might as well. I've been studying so long I can hardly concentrate.
What does the man mean?

25. Pete's really out of it these days.
Yeah. I know. Ever since he met Ann, he's been in another world.
What does the woman imply about Pete?

26. Look at all those cars lined up for the ferry. There must be forty ahead of us.
Yeah. I think it's going to be a while.
What does the woman imply?

27. I thought Pam said the math test wasn't until Monday.
Ellen, you should know better than to take Pam's words for anything.
What does the man imply about Pam?

28. So far the clubs are about three hundred dollars in the red, and we still have four months to to before membership renewal.
Well, we may have to raise our dues.
What does the man suggest they do?

29. I hear they hire two more students to work in the mall room.
They are just a little short of a full staff man.
What does the woman mean?

30. Fred is off to the golf course again.
You would think he was practicing for the championship.
What does the woman imply about Fred?

PART B
31-34  Two friends discussing weekend plans.
*Susan, I could really use your help this weekend.
*What is it, John? Another term paper?
*No, no. This is easy compared to that. My cousin is coming on Thursday. She has an interview at the college and I promised my aunt I look after her. We are going to the game on Friday, but Saturday I'm on duty at the library all day and can't get out of it. Uh, I was wondering if you could show her around during the day and maybe we can all meet for dinner later.
*Sure. I don't have any plans. What kind of things does she like to do?
*Actually I haven't seen her for three years. She lives so far away. But this will be her first time on a college campus, she is still in high school. So she probably enjoy anything on campus.
*Well, there is a music festival in the auditorium. That's a possibility. Only I hope it doesn't show. They are predicting 68 inches for the weekend. Everything will be closed down then.
*Well, how about for the time being. I'll plan on dropping her off at your place on the way to work, around eleven. But if there is a blizzard, I'll give you a call and see if we can figure something else out.
*Sounds good. Meantime I'll keep Saturday open. We can touch base Friday night when we have a better idea of the forecast.
*I hope this works out. I feel kind of responsible. She won't know a way around. And I want her to have a good time. Anyway I really appreciate your help. I owe you one.
*No problem I'll talk to you tomorrow.

31. What does John ask Susan to do?

32. What will John do on Saturday?

33. What does John say about his cousin's interests?

34. What can be inferred about John's cousin?

35-37  A conversation in a university cafeteria.
*I see you are having the fish for lunch.
*That's right. Fish sticks and tomato soup, my favorites.
*I bet they were frozen.
*What?
*The fish sticks.
*Of course they were frozen. We are hundreds of miles from the ocean. The cafeteria can't afford to fly in fresh fish.
*I just mentioned it because an anecdote Professor Chambers told in class this morning.
*Which class?
*My American social history. It's a lot of fun.
*He talked about fish sticks?
*Not exactly. Bur he did talk about frozen fish. OK, this is back in 1920, right? It's 20 degrees below zero. And this guy Clarence Birdseye's out ice-fishing.
*Where is this, Antarctica?
*No. Massachusetts I think. Anyway he catches a fish and drops it beside him on the ice and it freezes solid.
*So?
*So, later at home he thaws out the fish in a bucket of water and it's alive. Of course Birdseye is amazed. But he eventually figures it out that the fish froze so fast that no large ice crystals fomed.
*What do you mean?
*Look, usually when a plant or animal cell freezes, large ice crystals form inside and eventually tear the cell walls. That's what kills the frozen plant or animal. And also what changes the taste of something that's been frozen. But if you freeze something quickly, only very small ice crystals form. So Birdseye invented the process of quick freezing food.
*And that was the beginning of the frozen foods?
*Right.

35. Why does the woman tell the man the story?

36. Why is it important to quick freeze fresh food?

37. What was Clarence Birdseye surprised to learn?

PART C
38 to 41 A lecture about the railroad industry.
At the beginning of the century the railroads were used to haul everything. Powerful railroad barons made fortunes without laving to be accountable to the public or considerable to the customers. But cars and trucks changed all of that. And by 1970, the rail industry was beset with problems. Trucks were taking all the new business. And even so the rail industry remained indifferent to customers. Also many regulations kept the rail industry from adjusting to shifting market. But in 1980, the rail industry entered the modern era when a deregulation bill was passed that allowed railroad companies to make quick adjustments to fees and practices. Companies reduced their lines by 1/3 and used fewer employees. They also took steps to minimize damage to product. And to increase their shipping capacity by stacking freight containers on railroad cars. To accommodate these taller loads, underpasses and tunnels were enlarged. The image of the rail industry has changed dramatically. Today companies are very responsive to customers and are gaining increasing market shares in the shipping industry. The railroad safety record is also strong. Freight trains have an accident rate that is only 1/3 that of the truck industry. Trains also come out ahead of the trucks on environmental grounds because they give off only 1/10 to 1/3 the pollution that is emitted by trucks. And railroading does not were out highways as trucks do.
38. What does the speaker mainly discuss? 

39. What development caused a decline in the use of railroads?

40. What is one reason why the railroad industry is gaining public support?

41. According to the speaker, what expense does trucking public support?

42 to 45 Talk in an introductory biology class.
This coffee can contains soil from my garden. And I prepared slide samples to show you that it is alive. This ordinary backyard dirt is crawling with microbes. Microbes is not a very specific term. There are hundreds of thousands of different species called microbes. What they have to common is that we can't see them with a naked eye. They are microspopic. Look at this slide. You should see some round cells. Those are yeasts. Yeasts are fermenters. And they are necessary for making bread, beer, yogurt and so forth. Now look for an irregular shape with hairs coming out of it. That's a mold. Molds are decomposers, and they are responsible for the decomposition of my compile teeth. You should also see some protozoa. Some protozoa, like the one causes malaria are harmful to people. A microbic causes disease is called a pathogen. Finally you should see a lot of squiggly lines. They are bacteria. The oldest form of life on earth. Like the other microbes, bacteria are single-cells do not have a nuclear. So I've got about a teaspoon of soil in my hand here. In that teaspoon are about ten thousand protozoa, 200 thousand mold cells, a million yeast, probably a billion bacteria.
42. What is the main purpose of the talk?

43. Why did the speaker take a soil sample from his garden?

44. What does the speaker imply about yeasts?

45. What does the speaker ask the class to look at during the talk?

1996年5月托福閱讀全真試題

Question 1-12

Orchids are unique in having the most highly developed
of all blossoms, in which the usual male and female reproductive
organs are fused in a single structure called the column.
The column is designed so that a single pollination will fertilize
hundreds of thousands, and in some cases millions, of seeds,
so microscopic and light they are easily carried by the breeze.
Surrounding the column are three sepals and three petals,
sometimes easily recognizable as such, often distorted into gorgeous,
weird, but always functional shapes. The most noticeable
of the petals is called the labellum, or lip. It is often dramatically
marked as an unmistakable landing strip to attract
the specific insect the orchid has chosen as its pollinator.

To lure their pollinators from afar, orchids use appropriately
intriguing shapes, colors, and scents. At least 50 different
aromatic compounds have been analyzed in the orchid family,
each blended to attract one, or at most a few, species of
insects or birds. Some orchids even change their scents to interest
different insects at different times.

Once the right insect has been attracted, some orchids
present all sorts of one-way obstacle courses to make sure it
does not leave until pollen has been accurately placed or removed.
By such ingenious adaptations to specific pollinators,
orchids have avoided the hazards of rampant crossbreeding in
the wild, assuring the survival of species as discrete identities.
At the same time they have made themselves irresistible to collectors.

1.What does the passage mainly discuss?

(A) Birds
(B) Insects
(C) Flowers
(D) Perfume

2.The orchid is unique because of

(A) the habitat in which it lives
(B) the structure of its blossom
(C) the variety of products than can be made from it
(D) the length of its life

3.The word "fused" in line 3 is closet in meaning to

(A) combined
(B) hidden
(C) fertilized
(D) produced

4.How many orchid seeds are typically pollinated at one time?

(A) 200
(B) 2,000
(C) 20,000
(D) 200,000

5.Which of the following is a kind of petal?

(A) The column
(B) The sepal
(C) The stem
(D) The labellum

6.The labellum(line10) is most comparable to

(A) a microscope
(B) an obstacle course
(C) an airport runway
(D) a racetrack

7.The word "lure" in line 13 is closet in meaning to

(A) attract
(B) recognize
(C) follow
(D) help

8.Which of following is NOT mentioned as a means by which an orchid attracts insects?

(A) Size
(B) Shape
(C) Color
(D) Perfume

9.The word "their" in line 17 refers to

(A) orchids
(B) birds
(C) insects
(D) species

10.Which of the following statements about orchids' scents does the passage support?

(A) They are effective only when an insect is near the blossom.
(B) Harmful insects are repelled by them.
(C) They are difficult to tell apart.
(D) They may change at different times.

11.The word "placed" in line 21 is closet in meaning to

(A) estimated
(B) measured
(C) deposited
(D) identified

12.The word "discrete" in line 24 is closet in meaning to

(A) complicated
(B) separate
(C) inoffensive
(D) functional


Question 13-22

One of the most important social developments that
helped to make possible a shift in thinking about the role of
public education was the effect of the baby boom of the 1950's
and 1960's on the schools. In the 1920's, but especially in
the Depression conditions of the 1930's, the United States
experienced a declining birth rate -every thousand women aged
fifteen to forty-four gave birth to about 118 live children in
1920, 89.2 in 1930, 75.8 in 1936, and 80 in 1940. With the
growing prosperity brought on by the Second World War and
the economic boom that followed it, young people married and
established households earlier and began to raise larger families
than had their predecessors during the Depression. Birth rates
rose to 102 per thousand in 1946, 106.2 in 1950, and 118 in
1955. Although economics was probably the most important
determinant, it is not the only explanation for the baby boom.
The increased value placed on the idea of the family also helps
to explain this rise in birth rates. The baby boomers began
streaming into the first grade by the mid-1940's and became a
flood by 1950. The public school system suddenly found itself
overtaxed. While the number of schoolchildren rose because of
wartime and postwar conditions, these same conditions made
the schools even less prepared to cope with the flood. The
wartime economy meant that few new schools were built between
1940 and 1945. Moreover, during the war and in the boom
times that followed, large numbers of teachers left their
profession for better-paying jobs elsewhere in the economy.

Therefore, in the 1950's and 1960's, The baby boom
hit an antiquated and inadequate school system. Consequently,
the "custodial rhetoric" of the 1930's and early 1940's no
longer made sense; that is, keeping youths aged sixteen and
older out of the labor market by keeping them in school could
no longer be a high priority for an institution unable to find
space and staff to teach younger children aged five to sixteen.
With the baby boom, the focus of educators and of laymen
interested in education inevitably turned toward the lower grades
and back to basic academic skills and discipline. The system no
longer had much interest in offering nontraditional, new, and
extra services to older youths.

13.What does the passage mainly discuss?

(A) The teaching profession during the baby boom
(B) Birth rates in the United States in the 1930's and 1940's
(C) The impact of the baby boom on public education
(D) The role of the family in the 1950's and 1960's

14.The word "it" in line 15 refers to

(A) 1955
(B) economics
(C) the baby boom
(D) value

15.The word "overtaxed" in line 20 is closest in meaning to

(A) well prepared
(B) plentifully supplied
(C) heavily burdened
(D) charged too much

16.The public schools of the 1950's and 1960' faced all of the following problems EXCEPT

(A) a declining number of students
(B) old-fashioned facilities
(C) a shortage of teachers
(D) an inadequate number of school buildings

17.According to the passage, why did teachers leave the teaching profession after the outbreak of the war?

(A) The needed to be retained
(B) They were dissatisfied with the curriculum
(C) Other jobs provided higher salaries
(D) Teaching positions were scarce

18.The word "inadequate" in line 28 is closest in meaning to

(A) deficient
(B) expanded
(C) innovative
(D) specialized

19.The "custodial rhetoric" mentioned in line 29 refers to

(A) raising a family
(B) keeping older individuals in school
(C) running an orderly house hold
(D) maintaining discipline in the classroom

20.The word "inevitably" in line 35 is closest in meaning to

(A) unwillingly
(B) impartially
(C) irrationally
(D) unavoidably

21.Where in the passage does the author refer to the attitude of Americans toward raising a family in the 1950's and 1960's?

(A) Lines 1-4
(B) Lines 16-17
(C) Lines 27-28
(D) Lines 34-36

22.Which of the following best characterizes the organization of the passage?

(A) The second paragraph presents the effect of circumstances described in the first paragraph.
(B) The second paragraph provides a fictional account to illustrate a problem presented in the first paragraph.
(C) The second paragraph argues against a point made in the first paragraph.
(D) The second paragraph introduces a problem not mentioned in the first paragraph.

Questions 23-32

Nineteenth-century writers in the United States,
whether they wrote novels, short stories, poems, or plays,
were powerfully drawn to the railroad in its golden year. In
fact, writes responded to the railroads as soon as the first
were built in the 1830's. By the 1850's, the railroad was a
major presence in the life of the nation. Writers such as Ralph
Waldo Emerson and Henry David Thoreau saw the railroad
both as a boon to democracy and as an object of suspicion. The
railroad could be and was a despoiler of nature; furthermore,
in its manifestation of speed and noise, it might be a despoiler
of human nature as well. By the 1850's and 1860's, there
was a great distrust among writer and intellectuals of the rapid
industrialization of which the railroad was a leading force.
Deeply philosophical historians such as Henry Adams lamented
the role that the new frenzy for business was playing in eroding
traditional values. A distrust of industry and business continued
among writers throughout the rest of the nineteenth century
and into the twentieth.

For the most part, the literature in which the railroad
plays an important role belong to popular culture rather than to
the realm of serious art. One thinks of melodramas, boys'
books, thrillers, romances, and the like rather than novels of
the first rank. In the railroads' prime years, between 1890
and 1920, there were a few individuals in the United States,
most of them with solid railroading experience behind them,
who made a profession of writing about railroading-works
offering the ambience of stations, yards, and locomotive cabs.
These writers, who can genuinely be said to have created a
genre, the "railroad novel." are now mostly forgotten, their
names having faded from memory. But anyone who takes the
time to consult their fertile writings will still find a treasure
trove of information about the place of the railroad in the lift
of the United States.

23.With which of the following topics is the passage mainly concerned?

(A) The role of the railroad in the economy of the United States.
(B) Major nineteenth-century writers.
(C) The conflict between expanding industry and preserving nature.
(D) The railroad as a subject for literature.

24.The word "it" in line 10 refers to

(A) railroad
(B) manifestation
(C) speed
(D) nature

25.In the first paragraph, the author implies that writers' reactions to the development of railroads were

(A) highly enthusiastic
(B) both positive and negative
(C) unchanging
(D) disinterested

26.The word "lamented" in line 14 is closest in meaning to

(A) complained about
(B) analyzed
(C) explained
(D) reflected on

27.According to the passage, the railroad played a significant role in literature in all of the following kinds of books EXCEPT

(A) thrillers
(B) boys' books
(C) important novels
(D) romances

28.The phrase "first rank" in line 23 is closest in meaning to

(A) largest category
(B) highest quality
(C) earliest writers
(D) most difficult language

29.The word "them" in line 25 refers to

(A) novels
(B) years
(C) individuals
(D) works

30.The author mentions all of the following as being true about the literature of railroad EXCEPT that

(A) many of its writers had experience working on railroads.
(B) many of the books were set in railroad stations and yards
(C) the books were well known during the railroads' prime years.
(D) quite a few of the books are still popular today.

31.The words "faded form" in line 30 are closest in meaning to

(A) grew in
(B) disappeared from
(C) remained in
(D) developed from

32.What is the author's attitude toward the "railroad novels" and other books about railroads written between 1890 and 1920?

(A) They have as much literary importance as the books written by Emerson, Thoreau, and Adams.
(B) They are good examples of the effects industry and business had on the literature of the United States.
(C) They contributed to the weakening of traditional values.
(D) They are worth reading as sources of knowledge about the impact of railroad on life in the United States.


Questions 33-44

By the 1820's in the United States, when steamboats
were common on western waters, these boats were mostly
powered by engines built in the West (Pittsburgh, Cincinnati,
or Louisville), and of a distinctive western design specially
suited to western needs. The first steam engines in practical
use in England and the United States were of low pressure
design. This was the type first developed by James Watt, then
manufactured by the firm of Boulton and Watt, and long the
standard industrial engine. Steam was accumulated in a large,
double-acting vertical cylinder, but the steam reached only a
few pounds of pressure per square inch. It was low-pressure
engines of this type that were first introduced into the United
States by Robert Fulton. He imported such a Boulton and
Watt engine from England to run the Clermont. But this type
of engine was expensive and complicated, requiring many
precision-fitted moving parts.

The engine that became standard on western steamboats
was of a different and novel design. It was the work primarily
of an unsung hero of American industrial progress, Oliver
Evans(1755-1819). The self-educated son of a Delaware
farmer. Evans early became obsessed by the possibilities of
mechanized production and steam power. As early as 1802 he
was using a stationary steam engine of high-pressure design in
his mill. Engines of this type were not unknown, but before
Evans they were generally considered impractical and
dangerous.
Within a decade the high-pressure engine, the new type,
had become standard on western waters. Critics ignorant of
western conditions often attacked it as wasteful and dangerous.
But people who really knew the Ohio, the Missouri, and
the Mississippi insisted, with good reasons, that it was the only
engine for them. In shallow western rivers the weight of
vessel and engine was important; a heavy engine added to the
problem of navigation. The high-pressure engine was far
lighter in proportion to horsepower, and, with less than half
as many moving parts, was much easier and cheaper to repair.
The main advantages of low-pressure engines were safe operation
and economy of fuel consumption, neither of which meant
much in the West.

33.What is the passage mainly about?

(A) Streamboat engines in the western United States
(B) River travel in the western United States
(C) A famous United States inventor
(D) The world's first practical streamboat

34.What was the Clermont (line14)?

(A) A river
(B) A factory
(C) A boat
(D) an engine

35.Who developed the kind of stream engine used on western streamboats?

(A) Watt
(B) Boulton
(C) Fulton
(D) Evans

36.The word "novel" in line 18 is closest in meaning to

(A) fictional
(B) intricate
(C) innovative
(D) powerful

37.What option of Evans is suggested by the use of the term "unsung hero" in line 18?

(A) More people should recognize the importance of his work.
(B) More of his inventions should be used today.
(C) He should be credited with inventing the stream engine.
(D) More should be learned about his early life.

38.What does the author imply about Evans?
(A) He went to England to learn about stream power.
(B) He worked for Fulton.
(C) He traveled extensively in the West.
(D) He taught himself about stream engines.

39.The word "stationary" in line 23 is closest in meaning to

(A) single
(B) fixed
(C) locomotoiv
(D) modified

40.The word "they" in line 25 refers to

(A) engines
(B) mechanized production and steam power
(C) possibilities
(D) steamboats

41.What does the author imply about the western rivers?

(A) It was difficult to find fuel near them.
(B) They flooded frequently.
(C) They were difficult to navigate.
(D) They were rarely used for transportation.

42.The word "it" in line 31 refers to

(A) decade
(B) high-pressure engine
(C) weight
(D) problem

43.The word "vessel" in line 33 is closest in meaning to

(A) fuel
(B) crew
(C) cargo
(D) craft

44.Which of the following points was made by the critics of high-pressure engines?

(A) They are expensive to import.
(B) They are not powerful enough for western waters.
(C) They are dangerous.
(D) They weigh too much.

Questions 45-50

Volcanic fire and glacial ice are natural enemies. Eruptions
at glaciated volcanoes typically destroy ice fields, as they
did in 1980 when 70 percent of Mount Saint Helens ice cover
was demolished. During long dormant intervals, glaciers gain
the upper hand cutting deeply into volcanic cones and eventually
reducing them to rubble. Only rarely do these competing
forces of heat and cold operate in perfect balance to create a
phenomenon such as the steam caves at Mount Rainier
National Park.

Located inside Rainier's two ice-filled summit craters,
these caves form a labyrinth of tunnels and vaulted chambers
about one and one-half miles in total length. Their creation
depends on an unusual combination of factors that nature
almost never brings together in one place. The cave-making
recipe calls for a steady emission of volcanic gas and heat, a
heavy annual snowfall at an elevation high enough to keep it
from melting during the summer, and a bowl-shaped crater to
hold the snow.

Snow accumulating yearly in Rainier's summit craters is
compacted and compressed into a dense form of ice called firn,
a substance midway between ordinary ice and the denser crystalline
ice that makes up glaciers. Heat rising from numerous
openings (called fumaroles) along the inner crater walls melts
out chambers between the rocky walls and the overlying ice
pack. Circulating currents of warm air then melt additional
opening in the firn ice, eventually connecting the individual
chambers and, in the larger of Rainier's two craters, forming
a continuous passageway that extends two- thirds of the way
around the crater's interior.

To maintain the cave system, the elements of fire under
ice must remain in equilibrium. Enough snow must fill the
crater each year to replace that melted from below. If too
much volcanic heat is discharged, the crater's ice pack will
melt away entirely and the caves will vanish along with the
snow of yesteryear. If too little heat is produced, the ice,
replenished annually by winter snowstorms, will expand, pushing
against the enclosing crater walls and smothering the present
caverns in solid firn ice.

45.With what topic is the passage primarily concerned?

(A) The importance of snowfall for Mount Rainier.
(B) The steam caves of Mount Rainier.
(C) how ice covers are destroyed.
(D) The eruption of Mount Saint Helens in 1980.

46.The word "they" in line 2 refers to

(A) fields
(B) intervals
(C) eruptions
(D) enemies

47.According to the passage long periods of volcanic inactivity can lead to a volcanic cone's

(A) strongest eruption
(B) sudden growth
(C) destruction
(D) unpredictability

48.The second paragraph mentions all of the following as necessary elements in the creation of steam caves EXCEPT

(A) a glacier
(B) a crater
(C) heat
(D) snow

49.According to the passage, heat from Mount Rainier's summit craters rises from

(A) crystalline ice
(B) firns
(C) chambers
(D) fumaroles

50.In line 37 "smothering" the caverns means that they would be

(A) eliminated
(B) enlarged
(C) prevented
(D) hollowed

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