更多"{{B}}TEXT D{{/B}} If pollution co"的相关试题:
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{{B}}TEXT D{{/B}}
If pollution continues to
increase at the present rate, formation of aerosols in the atmosphere will cause
the onset of an ice age in about fifty years’ time. This conclusion, reached by
Dr. S. I. Rasool and Dr. S. H. Schneider, of the United States Goddard Space
Flight Center, answers the apparently conflicting question of whether an
increase in the carbon di- oxide content of the atmosphere will cause the earth
to warm up or increasing the aerosol content will cause it to cool down. The
Americans have shown conclusively that the aerosol question is
dominant.
Two specters haunting conservationists have been the
prospect that meddling with the environment might lead to the planet’s becoming
unbearably hot or cold. One of these ghosts has now been laid, because it seems
that even an increase in the amount of carbon dioxide in the atmosphere to eight
times its present value will produce an increase in temperatu
A. Nuclear power.
B. Fossil fuels.
C. Carbon dioxide.
D. Atom bombs.
[单项选择]If pollution continues to increase at the present rate, formation of aerosols in the atmosphere will cause the onset of an ice age in about fifty years’ time. This conclusion, reached by Dr. S. I. Rasool and Dr. S.H. Schneider of the United States Goddard Space Flight Centre, answers the apparently conflicting questions of whether an increase in the carbon dioxide content of the atmosphere will cause the Earth to warm up or increasing the aerosol content will cause it to cool down. The Americans have shown conclusively that the aerosol question is dominant.
Two specters haunting conservationists have been the prospect that environmental pollution might lead to the planet’s becoming unbearably hot or cold. One of these ghosts has now been laid, because it seems that even an increase in the amount of carbon dioxide in the atmosphere to eight times its present value will produce an increase in temperature of only 2 ℃, which would take place over several thousand years. But the other
A. fire
B. pollution
C. ice age
D. high temperature
[填空题]
A.study
B.pollution
C.hut
D.jump
[填空题]
A.nation
B.pollution
C.motion
D.question
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Text 2
The history of modem pollution problems
shows that most have resulted from negligence and ignorance. We have an
appalling tendency to interfere with nature before all of the possible
consequences of our actions have been studied in depth. We produce and
distribute radioactive substances, synthetic chemicals and many other potent
compounds before fully comprehending their effects on living organisms. Our
education is dangerously incomplete. It will be argued that the
purpose of science is to move into unknown territory, to explore, and to
discover. It can be said that similar risks have been taken before, and that
these risks are necessary to technological progress. These
arguments overlook an important element. In the past, risks taken in the name of
scientific progress were restricted to a small place and brief period of time.
A. the indifference to the condition of the environment. B. the lack of the ability to control the progress of science. C. the inability of science to deal with certain human endeavors. D. the ignorance of the disposal of pollutants.
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