There are  blanks in the following passage． For each blank there are four choices marked A，B，Cand D on the right side of the paper． You should choose the ONE that best fits into the passage． Then mark the corresponding letter on the Answer Sheet with a single line through the centre．　　Although there are many skillful Braille readers，thousands of other blind people find it difficult to learn that system． They are thereby shut  61　from the world of books and newspapers，having to　62　on friends to read aloud to them．
　　A young scientist named Raymond Kurzweil has now designed a computer which is a major  63　in providing aid to the  64　． His machine，Cyclops，has a camera that  65　any page，interprets the print into sounds，and then delivers them orally in a robot-like  66　through a speaker． By pressing the appropriate buttons  67　Cyclops’s keyboard，a blind person can “read”any  68　document in the English language．
　　This remarkable invention represents a tremendous  69　forward in the education of the handicapped． At present，Cyclops costs $50,000．  70　，Mr． Kurzweil and his associates are preparing a smaller  71　improved version that will sell  72　less than half that price． Within a few years，Kurzweil  73　the price range will be low enough for every school and library to  74　one． Michael Hingson，Director of the National Federation for the Blind，hopes that  75　will be able to buy home  76　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  77　in those tests，making lots of  78　suggestions to the engineers who helped to produce Cyclops．
　　“This is the first time that blind people have ever done individual studies  79　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  80　，the manufacturers have been the blind ones．”