2. 外语
  3. Although there are many skillful Braille readers, thousands of other blind people find it difficult to learn that system. They a

Although there are many skillful Braille readers, thousands of other blind people find it difficult to learn that system. They a

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问题     Although there are many skillful Braille readers, thousands of other blind people find it difficult to learn that system. They are thereby shut(1)_____ from the world of books and newspapers, having to(2)_____ on friends to read aloud to them.
    A young scientist named Raymond Kurzweil has now designed a computer which is a major (3)_____ in providing aid to the(4)______. His machine, Cyclops, has a camera that(5)_____ any page, interprets the print into sounds, and then delivers them orally in a robot-like(6)_____ through a speaker. By pressing the appropriate buttons (7)_____ Cyclops’s keyboard, a blind person can "read" any(8)_____ document in the English language.
    This remarkable invention represents a tremendous(9)_____ forward in the education of the handicapped. At present, Cyclops costs $50,000. (10)______, Mr. Kurzweil and his associates are preparing a smaller(11)_____ improved version that will sell(12)_____ less than half that price. Within a few years, Kurzweil(13)_____ the price range will be low enough for every school and library to (14)_____ one. Michael Hingson, Director of the National Federation for the Blind, hopes that (15)_____ will be able to buy home(16)_____ of Cyclops for the price of a good television set.
    Mr. Hingson’s organization purchased five machines and is now testing them in Maryland, Colorado, Iowa, California, and New York. Blind people have been(17)_____ in those tests, making lots of(18)_____ suggestions to the engineers who helped to produce Cyclops.
    "This is the first time that blind people have ever done individual studies(19)_____ a product was put on the market, Hingson said." Most manufacturers believed that having the blind help the blind was like telling disabled people to teach other disabled people. In that(20)______, the manufacturers have been the blind ones.
(7)
选项 A、on
B、at
C、in
D、from
答案A
解析 根据搭配，应该是键盘“上”的按钮，所以应选介词on。
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