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推荐文章：大学英语四级模拟试题（七）
推荐文章简介：
Directions: There are four reading passages in this part. Each passage is followed by some questions. For each question there are four suggested answers marked A, B, C and
?á??¨′??¨¨?¨o¨|). Now those __51__ 51. A) items B) toys <
br>seem hopelessly old-fashioned: this C) sets D) series
Christmas, there were a lot of __52__ 52. A) private B) children
C) school D) personal
computers under the tree. __53__ that 53. A) given B) Provided
computers are their key to success, C) Convinced D) Believed
parents are also frantically insisting
that children __54__ taught to use them 54. A) are B) be
in school--as early as possible. C) are being D) were
The problem for schools is that
when it __55__ computers, parents do 55. A) talks about B) comes to
not always know best. C) turns to D) mentions
Many schools are __56__ parental 56. A) ignorant of B) blaming
impatience and are purchasing hardware C) yielding to
D) turnin a deaf ear to
(¨?2?t) __57__ sound educational plan- 57. A) without B) with
ning so they can say,"Ok, we've moved C) through D) for
into the computer age."Teachers __58__ 58. A) relied on B) relaxed
themselves caught in the middle of the C) freed D) found
problem -- between parent pressure and
__59__ educational decisions. 59. A) wise B) clever
C) slow D) enough
Educators do not even agree __60__ 60. A) on B) with
how computers should be used. A lot of C) to D) about
money is going for computerized educa-
tional materials __61__ research has 61. A) however B) where
C) what D) that
shown can be taught __62__ with pencil 62. A) equally
and paper. Even those who believe that B) in the same way
C) just as well D) not as well
all children should __63__ to computer, 63. A) be open B) have access
C) look D) turn
warn of potential __64__ to the very 64. A) approaches B) exposures
young.
C) dangers D) laziness
The temptation(¨???¨?) remains strong
largely because young children __65__ 65. A) adopt B) keep
so well to computers. First graders have C) adapt D) devote
been__66__ willing to work for two hours 66. A) watched B) seen
on math skills. Some have an attention C) told D) taught
span of 20 minutes. __67__ school can 67. A) High B) Not every
afford to go into computing, and that C) No D) Any
creates __68__ another problem: a divi- 68. A) already B) of course
sion between the haves and have-nots. C) in addition D) yet
Very few parents ask __69__ computer 69. A) for B) against
instruction in poor school districts, C) to buy D) to use
__70__ there may be barely enough money 70. A) due that B) in any case
to pay the reading teacher. C) although D) where
READING COMPREHENSION
Questions 71 to 75 are based on the following passage:
The failed Skylab will come screaming home to earth in disappointmentsometime next month, but it will fall we know not where.
That precise information is beyond even the calculations of scientistsand their computers.
The best they can tell us is that the space station, weighing 77 tons andas high as a 12-story building, will break into hundreds of pieces that willbe scattered across a track 100 miles wide and 4,000 miles long.
We are again exposed to one of those unexpected adventures, or misadven-tures, of science that attracts our attention from the boring routines ofdaily existence and encourages us to think a lot about man's future.
What worries Richard Smith, the Skylab's director, is the'big pieces'that will come through the atmosphere. Two lumps, weighing 2 tons each, andten, weighing at least 1,000 pounds each, will come in at speeds of hundredsof miles an hour, and if they crash on land they will dig holes up to 100feet deep
.
What worries us, with our lack of scientific knowledge and our quickimagination, is both the big and little pieces, although project officialssay there is a very small chance that anyone will be injured by them.
That's good to know , but it doesn't remove the doubts of the millionswho still remember the nuclear accident at Three Mile Island. That accidenttook place in 1979 in spite of what scientists had assured us as to thesafety of the nuclear reactor.
71. Where the Skylab will fall _______.
A) is kept secret
B) will be announced soon
C) is predicted by scientists
D) can't be predicted
72. The broken Skylab will be _______.
A) in two lumps--one weighing 2 tons and the other weighing 10 tons
B) falling with the force of a 12-story building
C) composed of 12 big pieces and hundreds of smaller pieces
D) an attractive scene to millions of people
73. The author suggests that _______.
A) the danger of the Skylab's fall has been overestimated
B) it's useless to worry over things you can't do anything about
C) computers can solve the problem caused by the broken Skylab
D) the danger of the Skylab's fall has been underestimated
74. The author refers to Three Mile Island _______.
A) because he fears that a piece of the Skylab may strike a nuclear power
plant
B) as a doubtful comment on the officials' words
C) because he is afraid of nuclear power
D) because the nuclear reactor there and the Skylab were built by the same
company
75. The author expresses his _______.
A) interest in the failure of the Skylab
B) willingness to give his advice
C) doubtful attitude toward scientists
D) eagerness to see more new scientific discoveries
Questions 76 to 80 are based on the following passage:
Any talk of the energy needs of the United States should include
adiscussion of the Tennessee Valley Authority, a successful but sometimesquiet federal agency. The Tennessee valley Authority began life in 1933 asone of the public works agencies designed to help fight the Great Depression.The TVA was first meant to employ thousands of men to build a chain of damsdown the Tennessee River. These dams were to include electric plants forgenerating electricity to provide cheap power for the rural land in thevalley area.
Within ten years, most of the homes in the TVA area had electricity. Intwenty years, there were four times as many homes in the area with power.At first , TVA electrcity cost a penny per kilowatt. Many homes in the arearelied on electricity for heating. This results in criticism now that elec-tricity is more than three pennies per kilowatt. Other criticism has beenaimed at the TVA's other methods of generating power in 1975. The Authoritywas sued(?e??) for polluting the air with its coal-generating plants. Anti-nuclear groups point out that the TVA would soon have a total of seventeenatomic reactor plants supplying power for its service area. But the TennesseeValley Authority has adjusted to the new times. It quickly became a modelfor pollution control at its coal plants. Just as quickly the TVA founditself an energy conserver as well as a producer. The TVA conducts freehome energy consultations and offers cheap loans to consumers who want toinstall insulation storm windows, solar energy equipment or woodburningstoves. The resulting decrease in demand has allowed the TVA to postponeor delay construction of two nuclear reactors. Instead, the Authority isbuilding a plant to extract coal gas from low-grade coal. Their first stepwill be to use the coal gas to make an ammonia(???à) fertilizer for farmersin the TVA service area. Their ultimate g上一页 [1] [2] [3] 下一页 |
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