填空题. A．stride B．valuable C．considers D．printed E．individual F．visual G．thereby H．estimates I．modes J．keyboard K．breakthrough L．sense M．models N．occasion O．thereof Although there are many skillful Braille readers, thousands of other blind people find it difficult to learn that system. They are 1 shut off from the world of books and newspapers, having to rely on friends to read aloud to them. A young scientist named Raymond Kurzweil has now designed a computer, which is a major 2 in providing aid to the sightless. His machine, Cyclops, has a camera that scans any page, interprets the print into sounds, and then delivers them orally in a robot-like voice through a speaker. By pressing the appropriate buttons on Cyclops's 3 , a blind person can "read" any 4 document in the English language. This remarkable invention represents a tremendous 5 forward in the education of the handicapped. At present, Cyclops costs $50,000. However, Mr. Kurzweil and his associates are preparing a smaller but improved version that will sell for less than half that price. Within a few years, Kurzweil 6 the price range will be low enough for every school and library to own one. Michael Hingson, Director of the National Federation for the Blind, hopes that families will be able to buy home 7 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 assisting in those tests, making lots of 8 suggestions to the engineers who helped to produce Cyclops. "This is the first time that blind people have ever done 9 studies before 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 10 , the manufacturers have been the blind ones."