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In 1985， Route 66 was officially removed from 查看材料

A.the
B.the
C.the
D.movement
E.the
F.dust

【参考答案】

A
本题考查的是对阐述文章的主旨事实与细节的了解。依据是文章第七段中“Final．1y，inl985，Route......

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根据材料，回答题。Singing Alarms Could Save the BlindIf you cannot see， you may not be able to find your way out of a burning building——and that could be fatal. A company in Leeds could change all that_________ （51 ） directional sound alarms capable of guiding you to the exit.Sound Alert， a company ' _________ （52） the University of Leeds， is installing the alarms in a residential home for_________ （ 53 ） people in Sommerset and a resource centre， for the blind in Cumbria. _________ （52 ） produce a wide range of frequencies that enable the brain to determine where the_________ （ 55 ） is coming from.Deborah Withington of Sound Alert says that the alarms use most of the frequencies that can be _________ （56） by humans. 'It is a burst Of white noise _________ （57） people say sounds hkestatic on the radio，' she says. 'Its life-saving potential is great. 'She conducted an experiment in which people were filmed by thermal-imaging cameras trying to find their way out of a large_________ （58） room. It _________ （59） them nearly four minutes to find the door_________ （60） a sound alarm， but only 15 seconds with one.Withington studies how the brain _________ （61） sounds at the university. She says that the_________ （62） of a wide band of frequencies can be pinpointed mote easily than the source of anarrow band. Alarms_________ （63）the same concept have already been installed on emergency vehicles.The alarms will also include rising or failing frequencies to indicate whether people should goup_________ （64） down stairs. They were _________ （ 65 ） with the aid of a large grant from BritishNuclear Fuels.回答（51）题查看材料

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