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Questions 11 to 18 are based on the conversation you have just heard.
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A Small Event One afternoon in January 1989, Suzan Sharp, 43, and her 8-year-old son, David ,were walking hard across an icy parking lot, when Suzan’’s cane (手杖)slid on the ice . She 【51】 face fist into the mud . David 【52】 to her side . "Are you all right, Mom" 【53】 , Suzan put herself up. "I’’m okay, honey." she said. It had been nearly two years since Suzan had trouble walking. She was falling more 【54】 now. Every inch of ice was a 【55】 danger for her. " I could do something," the boy thought. David, too, was having 【56】 of his own. The boy had a speech defect. At school he 【57】 asked questions or read aloud. One day Davids teacher announced a 【58】 assignment. "Each of you is going to come up with an invention, "she said. This was for "INVENT AMERICA!", a national competition to encourage creativity in 【59】 . An idea hit David one evening. 【60】 only his mothers cane didn’t slip on ice ,he thought. "That’’s it!" David realized. "What if I fixed your cane to a nail stretched out of the bottom" he asked his mother. His mother told him," 【61】 it would scratch floors. " "It looks like a ball-point pen. You take your hand 【62】 the button and the nail returns back up." Hours later the cane was finished. David and his father, Jeff, 【63】 as Suzan used it to walk 50 feet across the 【64】 . "It works!" she said . In July 1989, David was declared national winner at the annual" INVENT AMERICA!" ceremony in Washington D.C.. As David began to make 【65】 appearances, he was forced to communicate more clearly. Today, David is nearly free of his cane which is waiting to be widely used. So the boy who once had trouble talking now hopes to start making canes for people who have trouble walking.
Ice Cream For Dogs1. Humans not only love eating ice cream, they enjoy feeding it to their pets(宠物). Market studies show that two-thirds of all dog owners give ice cream to their dogs. Unfortunately, says William Tyznik, an expert on animal nutrition(营养)at Ohio State University, ice cream is not good for dogs. "It has milk sugar in it," he says," which dogs cannot digest very well. "2. Bothered by that knowledge but aware of the desire of dog owners to please their companions, Tyznik invented a new frozen treat for dogs that, he says, is more nutritious than ice cream—and as much fun to eat. The product, called Frosty Paws, is made of a liquid by-product (副产品) of cheese and milk with the sugar removed. Frosty Paws also contains refined soy flour, water, vegetable oil, vitamins and minerals. It took Tyznik, who has also invented a horse feed (called Tizwhiz)and another dog food (named Tizbits), three years to perfect the Frosty Paws formulas, and two attempts to commercialize it. After losing B 25, 000 trying to market the invention himself, Tyznik sold the rights to Associated Ice Cream of Westervile, Ohio, which makes the product and packages it in cups.3. Tyznik claims that Frosty Paws has been tested extensively and that "dogs love it". Of 1,400 dogs that have been offered the product, he says, 89 percent took it on the first try. Three out of four preferred it to Milk-Bone or sausages. The product, which will be available in the ice-cream section of supermarkets, comes in packs of three or four cups, costing between 6 1. 79.4. What would happen if a human should mistake Frosty Paws for real ice cream Nothing, says Tyznik. Its harmless, but frankly, he says, it wont taste very good.A. The price of Frosty PawsB. No harm to humanC. The creation of a new kind of ice cream for dogsD. Harm to humanE. Feeding ice-creams to dogsF. Attraction to dogs
Comparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 16th centuries. Yet much had happened (67) . As was discussed before, it was not (68) the 19th century that the newspaper became the dominant pre-electronic (69) , following in the wake of the pamphlet and the book and in the (70) of the periodical. It was during the same time that the communications revolution (71) up, beginning with transport, the railway, and leading (72) through the telegraph, the telephone, radio, and motion pictures (73) the 20th-century world of the motor car and the airplane. Not everyone sees that process in (74) . It is important to do so. It is generally recognized, (75) , that the introduction of the computer in the early 20th century, (76) by the invention of the integrated circuit during the 1960s, radically changed the process, (77) its impact on the media was not immediately (78) . As time went by, computers became smaller and more powerful, and they became "personal" too, as well as (79) , with display becoming sharper and storage (80) increasing. They were thought of, like people, in (81) of generations, with the distance between generations much (82) . It was within the computer age that the term "information society" began to be widely used to describe the (83) within which we now live. The communications revolution has (84) both work and leisure and how we think and feel both about place and time, but there have been (85) views about its economic, political, social and cultural implications. "Benefits" have been weighed (86) "harmful" outcomes. And generalizations have proved difficult.
湖泊具有灌溉、航运、养殖、旅游、调节河川径流、调节湖滨地区气候等功能，是水体旅游资源的一个重要组成部分。( )
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