题目内容
Passage ThreeQuestions 33 to 35 are based on the passage you have just heard.
查看答案
搜索结果不匹配？点我反馈
更多问题
Questions 19 to 21 are based on the conversation you have just heard.
细菌RNA聚合酶的6亚基是
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.
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.
微信支付 
支付宝支付