1998年5月托福考试阅读理解全真试题

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来源 100Test.Com百考试题网

Questions 1-11

Before the 1500 s, the western plains of North America
were dominated by farmers. One group, the Mandans, lived
in the upper Missouri River country, primarily in present-day
North Dakota. They had large villages of houses built close
together. The tight arrangement enabled the Mandans to protect
themselves more easily from the attacks of others who might
seek to obtain some of the food these highly capable farmers
stored from one year to the next.

The women had primary responsibility for the fields.
They had to exercise considerable skill to produce the desired
results, for their northern location meant fleeting growing
seasons. Winter often lingered. autumn could be ushered in by
severe frost. For good measure, during the spring and summer,
drought, heat, hail, grasshoppers, and other frustrations
might await the wary grower.

Under such conditions, Mandan women had to grow
maize capable of weathering adversity. They began as early as
it appeared feasible to do so in the spring. clearing the land,
using fire to clear stubble from the fields and then planting.
From this point until the first green corn could be harvested,
the crop required labor and vigilance.

Harvesting proceeded in two stages. In August the Mandans
picked a smaller amount of the crop before it had matured
fully. This green corn was boiled, dried, and shelled, with
some of the maize slated for immediate consumption and the
rest stored in animal-skin bags. Later in the fall, the people
picked the rest of the corn. They saved the best of the harvest
for seeds or for trade, with the remainder eaten right away or
stored for later use in underground reserves. With appropriate
banking of the extra food, the Mandans protected themselves
against the disaster of crop failure and accompanying hunger.

The women planted another staple, squash, about the
first of June, and harvested it near the time of the green corn
harvest. After they picked it, they sliced it, dried it, and
strung the slices before they stored them. Once again, they
saved the seed from the best of the year s crop. The Mandans
also grew sunflowers and tobacco. the latter was the particular
task of the old men.

1. The Mandans built their houses close together in order to

(A) guard their supplies of food
(B) protect themselves against the weather
(C) allow more room for growing corn
(D) share farming implements

2.The word "enabled" in line 5 is closest in meaning to

(A)covered
(B) reminded
(C)helped
(D)isolated

3.The word "considerable" in line 10 is closest in meaning to

(A) planning
(B) much
(C) physical
(D) flew

4.Why does the author believe that the Mandans were skilled farmers?

(A) They developed effective fertilizers.
(B) They developed new varieties of corn.
(C) They could grow crops in most types of soil.
(D) They could grow crops despite adverse weather.

5. Tile word "consumption" in line 25 is closest in meaning to

(A) decay
(B) planting
(C) eating
(D) conversion

6.Which of the following processes does the author imply was done by both men and women?

(A) Clearing fields
(B) Planting corn
(C) Harvesting corn
(D) harvesting squash.

7.The word "disaster" in line 31 is closest in meaning to

(A)control
(B)catastrophe
(C)avoidance
(D)history

8. According to the passage, the Mandans preserved their food by

(A)smoking
(B)drying
(C)freezing.
(D)salting

9.The word "it" in line 34 refers to

(A)June
(B)corn
(C)time
(D)squash

10.Which of the following crops was cultivated primarily by men

(A) Corn
(B)Squash
(C)Sunflower
(D)Tobacco

11.Throughout the passage, the author implies that the Mandans

(A)planned for the future
(B) valued individuality
(C)were open to strangers
(D)were very adventurous

Questions 12-20

The elements other than hydrogen and helium exist in
such small quantities that it is accurate to say that the universe
somewhat more than 25 percent helium by weight and
somewhat less than 25 percent hydrogen.
Astronomers have measured the abundance of helium
throughout our galaxy and in other galaxies as well. Helium
has been found In old stars, in relatively young ones, in interstellar
gas, and in the distant objects known as quasars. Helium
nuclei have also been found to be constituents of cosmic
rays that fall on the earth (cosmic "rays" are not really a form
of radiation. they consist of rapidly moving particles of numerous
different kinds). It doesn t seem to make very much difference
where the helium is found. Its relative abundance never
seems to vary much. In some places, there may be slightly
more of it. In others, slightly less, but the ratio of helium to
hydrogen nuclei always remains about the same.

Helium is created in stars. In fact, nuclear reactions that
convert hydrogen to helium are responsible for most of the
energy that stars produce. However, the amount of helium that
could have been produced in this manner can be calculated,
and it turns out to be no more than a few percent. The
universe has not existed long enough for this figure to be
significantly greater. Consequently, if the universe is somewhat
more than 25 percent helium now, then it must have been
about 25 percent helium at a time near the beginning..
However, when the universe was less than one minute
old, no helium could have existed. Calculations indicate that
before this time temperatures were too high and particles of
matter were moving around much too rapidly. It was only
after the one-minute point that helium could exist.

By this time,
the universe had cooled sufficiently that neutrons and protons
could stick together. But the nuclear reactions that led to the
formation of helium went on for only a relatively short time.
By the time the universe was a few minutes old, helium
production had effectively ceased.

12.What does the passage mainly explain?

(A)How stars produce energy
(B)The difference between helium and hydrogen
(C)When most of the helium in the universe was formed
(D)Why hydrogen is abundant

13.According to the passage, helium is

(A) the second-most abundant element in the universe
(B) difficult to detect
(C) the oldest element in the universe
(D) the most prevalent element in quasars

14.The word "constituents" in line 9 is closest in meaning to

(A) relatives
(B) causes
(C)components
(D) targets

15.Why does the author mention "cosmic rays t in line 10?

(A)As part of a list of things containing helium
(B)As an example of an unsolved astronomical puzzle
(C) To explain how the universe began
(D) To explain the abundance of hydrogen in the universe

16.The word "vary" in line 14 is closest ill meaning to

(A) mean
(B) stretch
(C) change
(D) include

17.The creation of helium within stars

(A) cannot be measured
(B) produces energy
(C) produces hydrogen as a by-product
(D) causes helium to be much more abundant In old stars than In young star:

18. The word "calculated" in line 20 is closest in meaning to

(A) ignored
(B) converted
(C) increased
(D) determined

19.Most of the helium in the universe was formed

(A) in interstellar space
(B) in a very short time
(C)during the first minute of the universe s existence
(D) before most of the hydrogen

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

(A)extended
(B)performed
(C)taken hold
(D)stopped

Questions 21-30

In colonial America, people generally covered their beds
with decorative quilts resembling those of the lands from which
the quitters had come. Wealthy and socially prominent settlers
made quilts of the English type, cut from large lengths of cloth
of the same color and texture rather than stitched together
from smaller pieces. They mad these until the advent of the
Revolutionary War in I 775, when everything English came to
be frowned upon.

Among the whole-cloth quilts made by these wealthy settlers
during the early period are those now called linsey-
woolseys. This term was usually applied to a fabric of wool
and linen used In heavy clothing and quilted petticoats worn in
the wintertime. Despite the name, linsey-woolsey bedcovers
did not often contain linen. Rather, they were made of a top
layer of woolen or glazed worsted wool fabric, consisting of
smooth, compact yarn from long wool fiber dyed dark blue,
green, or brown with a bottom layer of a coarser woolen material,
either natural or a shade of yellow. The filling was a soft
layer of wool which had been cleaned and separated and the
three layers were held together with decorative stitching done
with homespun linen thread. Later, cotton thread was used
for this purpose. The design of the stitching was often a simple
one composed of interlocking circles or crossed diagonal
lines giving a diamond pattern.

This type of heavy, warm, quilted bedcover was so large
that it hung to the floor. The corners are cut out at the foot of
the cover so that the quilt fit snugly around the tall four-poster,
beds of the 1700 s, which differed from those of today in that
they were shorter and wider. they were short because people
slept in a semi-sitting position with many bolsters or pillows,
and wide, because each bed often slept three or more. The
linsey-woolsey covering was found in the colder regions of the
country because of the warmth it afforded. There was no
central heating and most bedrooms did not have fireplaces.

21. What does this passage mainly discuss?

(A) The processing of wool
(B) Linsey-woolsey bedcovers
(C) Sleeping habits of colonial Americans
(D) Quilts made in England

22. The word "prominent" in line 3 is closest in meaning to

(A) isolated
(B) concerned
(C) generous
(D) distinguished

23.The author mention the Revolutionary War as a time period when

(A) quills were supplied to the army
(B) more immigrants arrived from England
(C) quills imported from England became harder to find
(D) people s attitudes toward England changed.

24.The phrase "applied to" in line 11 is closest in meaning to

(A) sewn onto
(B) compared to
(C) used for
(D) written down on

25.The term "linsey-woolsey" originally meant fabric used primarily in

(A)quilts
(B)sheets
(C)clothing
(D) pillows

26.The word "coarser" in line 17 is closest in meaning to

(A)older
(B) less heavy
(C)more attractive
(D) rougher

27.The quilts described in the second and third paragraphs were made primarily of

(A) wool
(B) linen
(C) cotton
(D) a mixture of fabrics

28.It can be inferred from the third paragraph that the sleeping habits
of most Americans have changed since the 1700 s in all the following ways EXCEPT

(A) the position in which people sleep
(B) the numbers of bolsters or pillows people sleep on
(C) the length of time people sleep
(D) the number of people who sleep in one bed

29.The word "afforded" in line 33 is closest in meaning to
(A) provided
(B) spent
(C) avoided
(D) absorbed

30.Which of the following was most likely to be found in a bedroom in the colder areas of the American colonies?

(A)A linsey-woolsey
(B)A vent from a central healing system
(C)A fireplace
(D)A wood stove

Questions 31-40

Growing tightly packed together and collectively weaving
a dense canopy of branches, a stand of red alder trees can
totally dominate a site to the exclusion of almost everything else.
Certain species such as salmonberry and sword ferns have
Line adapted to the limited sunlight dappling through the canopy,
but few evergreen trees (S) will survive there. still fewer can compete
with the early prodigious growth of alders. A Douglas fir
tree reaches its maximum rate of growth ten years later than
an alder, and if the two of them begin life at the same time,
the alder quickly outgrows and dominates the Douglas fir.
After an alder canopy has closed, the Douglas fir suffers a
marked decrease in growth, often dying within seven years.
Even more shade-tolerant species of trees such as hemlock may
remain badly suppressed beneath aggressive young alders.

Companies engaged in intensive timber cropping naturally
take a dim view of alders suppressing more valuable evergreen
trees. But times are changing. a new generation of foresters
seems better prepared to Include in their management plans
consideration of the vital ecological role alders, play.
Among the alder s valuable ecological contributions is its
capacity to fix nitrogen in nitrogen-deficient soils. Alder roots
contain clusters of nitrogen-fixing nodules like those found on
legumes such as beans. in addition, newly developing soils
exposed by recent glacier retreat and planted with alders show
that these trees are applying the equivalent of ten bags of high-
nitrogen fertilizer to each hectare per year. Other chemical
changes to soil in which they are growing Include a lowering of
the base content and rise In soil acidity, as well as a substantial
addition of carbon and calcium. to the soil.

Another important role many alders play in the wild, particularly
in mountainous areas, is to check the rush of water
during spring melt. In Japan and elsewhere, the trees are
planted to stabilize soil on steep mountain slopes. Similarly,
alders have been planted to stabilize and rehabilitate waste
material left over from old mines, flood deposits, and landslide
areas in both Europe and Asia.

31.What does the passage mainly discuss?

(A)Differences between alder trees and Douglas fir trees
(B)Alder trees as a source of timber
(C)Management plans for using alder trees to improve soil
(D)The relation of alder trees to their forest environments

32.The word "dense" in line I is closest in meaning to

(A) dark
(B) tall
(C) thick
(D) broad

33.Alder trees can suppress the growth of nearby trees by depriving them of

(A) nitrogen
(B) sunlight
(C) soil nutrients
(D) water

34.Thc passage suggests that Douglas fir trees are

(A)a type of alder
(B)a type of evergreen
(C)similar to sword ferns
(D)fast-growing trees

35.It can be inferred from paragraph I that hemlock trees

(A) are similar in size to alder trees.
(B) interfere with the growth of Douglas fir trees
(C) reduce the number of alder trees In the forest
(D) need less sunlight than do Douglas fir trees

36.It can be inferred from paragraph 2 that previous generations of foresters

(A) did not study the effects of alders on forests
(B) did not want alders In forests
(C) harvested alders for lumber
(D) used alders to control the growth of evergreens

37.The word "they" in line 27 refers to

(A) newly developing soils
(B) alders
(C) bags
(D) chemical changes

38.According to the passage that alders are used in mountainous areas to

(A) nitrogen
(B) calcium
(C) carbon
(D) oxygen

39.It can be Inferred from the passage that alders are used in mountainous areas to

(A) prevent water from carrying away soil
(B) hold the snow
(C) protect mines
(D) provide material for housing

40.What is the author s main purpose in the passage?

(A) To argue that alder trees are useful in forest management
(B) To explain the life cycle of alder trees
(C) To criticize the way alders take over and eliminate forests
(D) To illustrate how alder trees control soil erosion

Questions 41-50

In taking ups new life across the Atlantic, the early European
settlers of the United States did not abandon the diversions
with which their ancestors had traditionally relieved the
tedium of life. Neither the harshness of existence on the new
continent nor Line the scattered population nor the disapproval of
the clergy discouraged the majority from the pursuit of
pleasure.

City and country dwellers. of course. conducted this pursuit
in different ways. Farm dwellers in their isolation not only
found it harder to locate companions in play but also thanks
to the unending demands and pressures of their work, felt it
necessary to combine fun with purpose. No other set of
colonists too so seriously one expression of the period.
"Leisure Is time for doing something useful." in the country-
side farmers therefore relieved the burden of the daily routine
with such double-purpose relaxation as hunting. fishing, and
trapping. When a neighbor needed help, families rallied from
miles around to assist In building a house or barn, husking
corn, shearing sheep. or chopping wood. Food, drink, and
celebration after the group work provided relaxation and
soothed weary muscles.

The most eagerly anticipated social events were the rural
fairs, Hundreds of men, women, and children attended from
far and near. The men bought or traded farm animals and
acquired needed merchandise while the women displayed food
prepared in their kitchens, and everyone, Including the
youngsters, watched or participated in a variety of competitive
sports, with prizes awarded to the winners. These events typically
included horse races, wrestling matches, and foot
races, as well as some nonathletic events such as whistling
competitions. No other occasions did so much to relieve the
isolation of farm existence.

With the open countryside everywhere at hand, city
dwellers naturally shared in some of the rural diversions.
Favored recreations included fishing, hunting1 skating, and
swimming. But city dwellers also developed other pleasures.
which only compact communities made possible.

41.What is the passage mainly about?

(A) Methods of farming used by early settlers of the United States
(B) Hardships faced by the early settlers of the United States
(C) Methods of buying, selling, and trading used by early settlers of the United States
(D) Ways in which early settlers of the United States relaxed

42.What can be inferred about the diversions of the early settlers of the United States?

(A) They followed a pattern begun in Europe.
(B) They were enjoyed more frequently than in Europe.
(C) The clergy organized them.
(D) Only the wealthy participated in them.

43.Which of he following can be said about the country dwellers attitude toward "the pursuit of pleasure"?

(A) They felt that it should help keep their minds on their work.
(B) They felt that it was not necessary.
(C) They felt that it should be. productive.
(D) They felt that it should not involve eating and drinking.

44.The phrase "thanks to" in line 10-11 is closest in meaning to

(A)grateful for
(B) help with
(C) because of
(D) machines for

45.The word "their" in line 11 refers to

(A) ways
(B) farm dwellers
(C) demands
(D) pressures

46.What is meant by the phrase "double-purpose" in line 19 ?

(A) Very frequent
(B) Useful and enjoyable
(C) Extremely necessary
(D) Positive and negative

47.The phrase "eagerly anticipated" in line 22 is closest in meaning to

(A) well organized
(B) old-fashioned
(C) strongly opposed
(D) looked forward to

48.Which of the following can be said about the rural diversions mentioned in the last paragraph in which city dwellers also participated?

(A) They were useful to the rural community.
(B) They involved the purchase items useful in the home.
(C) They were activities that could be done equally easily in the towns
(D) They were all outdoor activities.

49.What will the author probably discuss in the paragraph following this passage?

(A) The rural diversions enjoyed by both urban and rural people
(B) Leisure activities of city dwellers
(C) Building methods of the early settlers in rural areas
(D)Changes in the lifestyles of settlers as they moved to the cities

50. Where in the passage does the author mention factors that might prevent people from enjoying themselves?

(A)Line4-7
(B) Lines 12-14
(C) Lines 17-20
(D)Lines 25-27