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    Signal that may prove E．T．is phoning home

    By David Harding

    　　It is the sort of out-of-this-world phenomenon that might have got E．T．himself jumping for ioy (if only his legs had been long enough)．

    　　Astronomers bare received three mysterious radio signals from outer space．

    　　They picked them up while using a radio telascopc stationed in Puerto Rico to probe deep into the universe．

    　　Each signal lasted about one minute and was recorded on the frequency which scientists believe aliens would be most likely to use, namely SHGb02＋I4a (since you ask, this is the frequency at wbich hydrogen readily takes in and gives out energy．) According to New．Scientist magazine, the signal originates from a point her ween the Pi-es and Aries constellations (双鱼座和白羊座) where there is no obvious star or planetary system within 1,000 light years．

    　　What is sending tbe signals is unknown, hut scientists working on the Search for Exlraterrestrial Intelligence project believe it could finally prove there is life “out there”．

    　　”We are looking for something that screams out ‘artificial'“ said Eric Korpela, a researcher from the University of California, Berkeley．

    　　”This just doesn't do that bot it could be because it is distant．”

    　　Other scientists are not so sure it will point the way to alien life but they have ruled out a scientific joke．They believe it may be an unknown astronomical phenomenon or even a strange thing of the telescope itself．

    　　”If they can see the signal four, five or six times it really begins to get exciting,” said Jocelyn Bell Burnell, from the University of Bath．

    (1)

    In the pessage E．T．refers to ________．

    [　　]

    A．

    an astronomer

    B．

    an unknown person

    C．

    an alien

    D．

    an extraterrestrial intelligence project．

    (2)

    In the 8th paragraph, “ruled out” means ________．

    [　　]

    A．

    included

    B．

    excluded

    C．

    considered

    D．

    controlled

    (3)

    By writing this article the author means to

    [　　]

    A．

    make people know popular science

    B．

    tell us E．T．is phoning home

    C．

    tell us something about people from outer space

    D．

    tell us astronomers have received signals from outer space

    (4)

    Jocelyn Bell Burnell tends to believe

    [　　]

    A．

    in the existence of aliens

    B．

    in the nonexistence of aliens

    C．

    David Harding

    D．

    other scientists．

    答案：1．C;2．B;3．D;4．A;
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    　　Although there are no state controlled survival courses in Britain or the United States,there are various independent organizations offering similar activities．

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    [　　]

    A．

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