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    精英家教网 > 高中英语 > 题目详情
      
              Ask Dr. Jeffers This month Dr. Jeffers is answering questions
    about the human brain and how it works.
    Dear Dr. Jeffers,  
         One of my colleagues, Felix Moeller, told me that scientists are learning to use computer to
    'read minds'. Is there any truth to this story? -Jane Leon, New York, USA Dear Ms. Leon, Well,
    a lot of research is being conducted in this area, but so far, the brain scanning equipment and
    corresponding computer programs haven't been able to actually read thoughts. In one ex  periment,
    test subjects(受试者)were connected to scanning equipment and shown two numbers on a screen.
    They were then asked to choose between adding or subtracting(减)the two numbers. Using this
    method, researchers were able to follow brain processes and make the correct assumptions(假设)
    70 percent of the time. It's not quite mind reading, but it's certainly a first step. 
    -Dr. J.
    Dear Dr. Jeffers,  
         My three-year-old son loves it when I dig my fingers into his sides and tickle(胳肢)him until he
    laughs uncontrollably. The other day I noticed him trying to tickle himself but he couldn't do it.
    Why not?
    -Glenn Lewis, Vancouver, Canada
    Dear Mr. Lewis,
         It's because of how the brain works. The brain is trained to know what to pay attention to and
    what to ignore. It causes us to ignore physical feelings we expect to happen, but it causes a mild panic
    reaction when there is an unexpected feeling. For example, you don't notice how your shoulder feels
    while you're walking down the street. But if someone comes up behind you and touches you lightly on
    the shoulder, you may jump in fear. It's that unexpected part that causes the tickle reaction.
    -Dr. J.
                                           
    1. What can we learn from the answer to the first question?    
    A. Some equipment is able to read human minds.
    B. Test subjects have been used to make decisions.
    C. Some progress has been made in mind reading.
    D. Computer programs can copy brain processes.
    2. People laugh when tickled by others because the feeling is _____.    
    A. expected          
    B. unexpected        
    C. comfortable        
    D. uncomfortable
    3. According to the text, Jeffers is probably _____.   
    A. a computer programmer                
    B. a medical doctor
    C. a test subject                          
    D. a human brain expert
    1-3: CBD    
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