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    阅读理解。
          A Battery's Nightmare
          Portable electronics that can be carried about easily are only as good as their batteries (电池) and, let's
    face it, batteries aren't very good, especially when compared with, say, petrol, which packs 100 times a
    battery's energy into an equal space. That's why a large group of mechanical engineers (centered at the
    Massachusetts Institute of Technology, but with partners at other universities and companies) are hard at
    work in an effort to replace batteries with a tiny engine that runs on fuel. Imagine a battery-free life! When
    the fuel runs out in your mobile phone, you just fill up and go.
         The engine-about the size of a ten-cent coin-starts with a combustion chamber (燃烧室) that burns
    hydrogen. Its tiny parts are etched (蚀刻) onto silicon wafers (硅片) in the same manner that computer
    parts are etched onto integrated circuits (集成电路). The first engine is made up of five wafers. And since
    these wafers could be produced in much the same way as computer chips, they could probably be produced
    quite cheaply.
          But the devil in all this nice detail is efficiency. Tiny engine parts don't always behave like the bigger parts
    of the first engine. Something between the parts can slow down the works, according to Columbia University
    Professor LucFrechette, one of the engine's designers. Extreme heat from the combustion chamber is also a
    problem, often leaking to other parts of the engine.
         The scientists' goal is to create an engine that will operate 10 times better than batteries operate. Frechette
    says that a complete system, with all parts in place and working, will be set up in the next couple of years,
    but commercial models aren't likely until at least the end of the next ten years.
    1. According to the passage, the title suggests that ______.
    [     ]
    A. batteries should be greatly improved
    B. petrol will be used instead of batteries
    C. the time of batteries will be gone forever
    D. pollution problems caused by batteries must be solved
    2. What's the meaning of the underlined word "devil" in paragraph 3?
    [     ]
    A. Problem
    B. Advantage
    C. Invention
    D. Technique
    3. What can we infer from the passage?
    [     ]
    A. The new invention doesn't need any fuel.
    B. The new engine has been produced in large quantities.
    C. The new invention is much cheaper than the battery.
    D. The new engine needs to be improved before it's on sale.
    1-3: CAD
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    A
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