2. 考研
  3. Unless we spend money to spot and prevent asteroids (小行星) now, one might crash into Earth and destroy life as we know it, say so

Unless we spend money to spot and prevent asteroids (小行星) now, one might crash into Earth and destroy life as we know it, say so

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问题     Unless we spend money to spot and prevent asteroids (小行星) now, one might crash into Earth and destroy life as we know it, say some scientists.
    Asteroids are bigger versions of the meteoroids (流星) that race across the night sky. Most orbit the sun far from Earth and don’t threaten us. But there are also thousands of asteroids whose orbits put them on a collision course with Earth.
    Buy $ 50 million worth of new telescopes right now. Then spend $ 10 million a year for the next 25 years to locate most of the space rocks. By the time we spot a fatal one, the scientists say, we’ll have a way to change its course.
    Some scientists favor pushing asteroids off course with nuclear weapons. But the cost wouldn’t be cheap.
    Is it worth it? Two things experts consider when judging any risk are: 1) How likely the event is; and 2) How bad the consequences are if the event occurs. Experts think an asteroid big enough to destroy lots of life might strike Earth once every 500, 000 years. Sounds pretty rare—but if one did fall, it would be the end of the world. "If we don’t take care of these big asteroids, they’ll take care of us," says one scientist. "It’s that simple. "
    The cure, though, might be worse than the disease. Do we really want fleets of nuclear weapons sitting around on Earth? "The world has less to fear from doomsday (毁灭 性的) rocks than from a great nuclear fleet set against them," said a New York Times article. (272 words)
What do people think of the suggestion of using nuclear weapons to alter the courses of asteroids?
选项 A、It sounds practical but it may not solve the problem.
B、It may create more problems than it might solve.
C、It is a waste of money because a collision of asteroids with Earth is very unlikely.
D、Further research should be done before it is proved applicable.
答案B
解析 本题属于推理题。依据是文中的最后一段的内容：“The cure，though，might be worse than the disease．”(治疗方法可能比疾病本身还糟糕。)“the cure”暗指用核武器来改变小行星轨道的办法，“the disease”则指的是小行星可能会与地球相撞的危机。后文进一步指出全世界更害怕的是大量的核武器舰队，而不是毁灭性的星体。所以B是对的。
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