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LEARNING.SOHU.COM    2005年8月16日11:19    来源:[ 搜狐教育 ] 
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  Text 2

  Do you remember all those years when scientists argued that smoking would kill us but the doubters insisted that we didn't know for sure?That the evidence was inconclusive, the science uncertain?That the antismoking lobby was out to destroy our way of life and the government should stay out of the way?Lots of Americans bought that nonsense, and over three decades, some 10 million smokers went to early graves.

  There are upsetting parallels today, as scientists in one wave after another try to awaken us to the growing threat of global warming. The latest was a panel from the National Academy of Sciences, enlisted by the White House, to tell us that the Earth's atmosphere is definitely warming and that the problem is largely man-made. The clear message is that we should get moving to protect ourselves. The president of the National Academy, Bruce Alberts, added this keypoint in te preface to the panel's repor“Science never h all the answers But science does provide us with the best available guide to the future, and it is critical that out nation and the world base important policies on the best judgments that science can provide concerning the future consequences of present actions.”

  Just as on smoking voices now come from many quarters insisting that the science about global warming is incomplete, that it's Ok to keep pouring fumes into the air until we know for sure. this is a dangerous game:by the 100 percent of the evidence is in, it may be too late. With the risks obvious and growing, a prudent people would take out an insurance policy now.

  Fortunately, the White House is starting to pay attention. But it's obvious that a majority of the president's advisers still don't take global warming seriously. Instead of a plan of action, they continue to press for more research-a classic case of“paralysis by analysis”.

  To serve as responsible stewards of the planet, we must press forward on deeper atmospheric and oceanic research But research alone is inadequate. If the Administration won't take the legislative initiative, Congress should help to begin fashioning conservation measures A bill by Democratic Senator Robert Byrd of West Virginia, which would offer financial incentives for private industry is a promising start Many see that the country is getting ready to build lots of new power plants to meet our energy needs. If we are ever going to protect the atmosphere, it is crucial that those new plants be environmentally sound.

  26. An argument made by supporters of smoking was that

  A. there was no scientific evidence of the correlation between smoking and death.

  B. the number of early deaths of smokers in the past decades was insignificant.

  C. people had the freedom to choose their own way of life.

  D. antismoking people were usually talking nonsense.

  27. According to Bruce Alberts, science can serve as

  A. a protector.

  B. a judge.

  C. a critic.

  D. a guide.

  28. What does the author mean by“paralysis by analysis”(Last line, paragraph 4)

  A. Endless studies kill action.

  B. Careful investigation reveals truth.

  C. prudent planning hinders.

  D. Extensive research helps decision-making.

  29. According to the author, what should the Administration do about

  A. Offer aid to build cleaner power plants.

  B. Raise public awareness of conservation.

  C. Press for further scientific research.

  D. Take some legislative measures.

  30. The author associates the issue of global warming with that of smoking because

  A. they both suffered from the government's negligence.

  B. a lesson from the latter is applicable to the former.

  C. the outcome of the latter aggravates the former.

  D. both of them have turned from bad to worse.

  Text 3

  Of all the components of a good night's sleep, dreams seem to be least within our control. In dreams, a window opens into a world where logic is suspended and dead people speak. A century ago, Freud formulated his revolutionary theory that dreams were the disguised shadows of our unconscious desires and rears, by the late 1970s. neurologists had switched to thinking of them as just“mental noise”the random byproducts of the neural-repair work that goes on during sleep. Now researchers suspect that dreams are part of the mind's emotional thermostat, regulating moods while the brain is“off-line”And one leading authority says that these intensely powerful mental events can be not only harnessed but actually brought under conscious control, to help us sleep and feel better, “It's your dream”says Rosalind Cartwright, chair of psychology at Chicago's Medical Center.“If you don't like it, change it.”

  Evidence from brain imaging supports this view. The brain is as active during REM(rapid eye movement)sleep-when most vivid dreams occur-as it is when fully awake, says Dr, Eric Nofzinger at the University of Pittsburgh. But not all parts of the brain are equally involved, the limbic system(the“emotional brain”)is especially active, while the prefrontal cortex(the center of intellect and reasoning)is relatively quiet.“We wake up from dreams happy of depressed, and those feelings can stay with us all day”says Stanford sleep researcher Dr, William Dement.

  And this process need not be left to the unconscious. Cartwright believes one can exercise conscious control over recurring bad dreams As soon as you awaken, identify what is upsetting about the dream. Visualize how you would like it to end instead, the next time is occurs, try to wake up just enough to control its course. With much practice people can learn to, literally, do it in their sleep.

  At the end of the day, there's probably little reason to pay attention to our dreams at all unless they keep us from sleeping of“we wake u in a panic, ”Cartwright says Terrorism, economic uncertainties and general feelings of insecurity have increased people's anxiety. Those suffering from persistent nightmares should seek help from a therapist For the rest of us, the brain has its ways of working through bad feelings. Sleep-or rather dream-on it and you'll feel better in the morning.

  31. Researchers have come to believe that dreams

  A. can be modified in their courses.

  B. are susceptible to emotional changes.

  C. reflect our innermost desires and fears.

  D. are a random outcome of neural repairs.

  32. By referring to the limbic system, the author intends to show

  A. its function in our dreams.

  B. the mechanism of REM sleep.

  C. the relation of dreams to emotions.

  D. its difference from the prefrontal cortex.

  33. The negative feelings generated during the day tend to

  A. aggravate in our unconscious mind.

  B. develop into happy dreams.

  C. persist till the time we fall asleep.

  D. show up in dreams early at night.

  34.Cartwright seems to suggest that

  A. waking up in time is essential to the ridding of bad dreams.

  B. visualizing bad dreams helps bring them under con troll.

  C. dreams should be left to their natural progression.

  D. dreaming may not entirely belong to the unconscious.

  35. What advice might Cartwright give to those who sometimes have had dreams?

  A. lead your life as usual.

  B. Seek professional help.

  C. Exercise conscious control.

  D. Avoid anxiety in the daytime.

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