There was one thought that air pollution affected only the area immediately around large cities with factories and heavy traffic．At present, we realize that although these are the areas with the worst air pollution, the problem is really worldwide．On several occasions over the past decade，a heavy cloud of air pollution has covered the east of the United States and brought health warnings in distant areas away from any industrial cities．In fact，the very climate of the entire earth may be infected by air pollution．Some scientists consider that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels(coal and oil)is creating a “greenhouse effect”—— keeping heat reflected from the earth and raising the world’s average temperature．If this view is correct and the world's temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York，Boston，Miami，and New Orleans will be in water．
Another view, less widely held, is that increasing particular matter in the atmosphere is blocking sunlight and lowering the earth’s temperature—a result that would be equally disastrous．A drop of just a few degrees could create something close to a new ice age，and would make agriculture difficult or impossible in many of our top farming areas．Today we do not know for sure that either of these conditions will happen．Perhaps，if we are lucky enough，the two tendencies will offset each other and the world's temperature will stay about the same as it is now．Driven by economic profits, people ignore the damage on our environment caused by the “advanced civilization”．Maybe the air pollution is the price the human beings have to pay for their development．But is it really worth-while?
小題1:People used to think that air pollution_________ .
A．caused widespread damage in the countryside
B．a(chǎn)ffected the entire eastern half of the United States
C．had a very bad effect on health
D．existed merely in urban and industrial areas
小題2:As to the greenhouse effect, the author_________.
A．shares the same view with the scientists．
B．is uncertain of its occurrence
C．rejects it as being ungrounded
D．thinks that it will destroy the world soon
小題3:The underlined word “offset” in the second paragraph could be replaced by_______.
A．counter-actB．break fromC．get alongD．communicate
小題4:This passage is primarily about________ .
A．the greenhouse effect
B．the burning of fossil fuels
C．the potential effect of air pollution
D．the possibility of a new ice age

小題1:D
小題2:B
小題3:A
小題4:C

試題分析：
小題1:根據(jù)There was one thought that air pollution affected only the area immediately around large cities with factories and heavy traffic，故選D。
小題2:根據(jù)Today we do not know for sure that either of these conditions will happen.以及全文內(nèi)容故選B。
小題3:根據(jù)and the world's temperature will stay about the same as it is now．可知offset意思是抵消，故選A
小題4:結合全文內(nèi)容，可知這篇短文主要講了空氣污染的潛在影響，故選C
點評：本文說明了這篇短文主要講了空氣污染的潛在影響。并且提出了這樣一個問題：人類文明的進步要以空氣被污染為代價，這是否值得？答題前先閱讀問題，然后帶著問題，讀全文，找出答題所需要的依據(jù)，完成閱讀。
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科目：高中英語 來源：不詳 題型：閱讀理解

The Iceberg Was Only Part ofIt
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小題2:
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小題3:
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小題4:
A．a(chǎn)s long asB．a(chǎn)s far back asC．a(chǎn)s well asD．a(chǎn)s much as
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A．basisB．plotC．causeD．meaning
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A．meansB．toolsC．facilitiesD．hammers
小題9:
A．thereforeB．somehowC．insteadD．however
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A．Hardworking students.B．Very successful students.
C．Students failing to finish their school education.D．Students from poor families.
小題2:Which of the following is right according to Paragraph One?
A．People graduating from famous universities are more likely to get jobs.
B．Many successful people had the experience of giving up their school education.
C．If one has a lot of gold, he will become very rich one day.
D．We should stop our college education to follow in those successful people’s steps.
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A．is richer than any other man in the world
B．is well-known in Harvard University
C．finally finished his study at Harvard and got a doctorate degree
D．is the only founder of Microsoft
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B．Jobs thought his six-month college education gave him no help.
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A．flied away
B．changed into a fairy
C．still died
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Ten healthy volunteers were given theobromine, codeine or placebo, a pill that contains no medicine, during the experiment. Neither the volunteers nor the researchers knew who received which pill. The researchers then measured levels of capsaicin, which is used in research to cause coughing and as a sign of how well the medicines are stopping coughs.
The team found that, when the volunteers were given theobromine, the capsaicin needed to produce a cough was around a third higher than in the placebo group. When they were given codeine they needed only slightly higher levers of capsaicin to cause a cough compared with the placebo.
The researchers said that theobromine worked by keeping down a nerve activity(神經(jīng)活動), which cause coughing. They also found that unlike some standard cough treatments, theobromine caused no side effects such as sleepiness.
小題1:According to Professor Barnes, theobromine ______.
A．cannot be as effective as codeine
B．can be harmful to people’s health
C．cannot be separated from chocolate
D．can be a more effective cure for coughs
小題2:What was used in the experiment to cause coughing?
A．Theobromine. B．Codeine.C．Capsaicin.D．Placebo.
小題3:We learn from the text that volunteers in the experiment _____.
A．were patients with bad coughs
B．were divided into the three groups
C．received standard treatments
D．suffered little side effects
小題4:Which of the following would be the best title for the text?
A．Codeine: A New Medicine
B．Chocolate May Cure Coughs
C．Cough Treatment: A Hard Case
D．Theobromine Can Cause Coughs

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