2015综合类职称英语完形填空精选练习题(4)

　　Singing Alarms Could Save the Blind

　　If 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 ___________ all that with directional sound alarms capable of guiding you to the exit.

　　Sound Alert, a company run _________ the University of Leeds, is installing the alarms in a residential home for _________ people in Sommerset and a resource centre for the blind in Cumbria. The alarms produce a _________ range of frequencies that enable the brain to_________ where the sound is coming from.

　　Deborah Withington of Sound Alert says that the alarms use most of the frequencies that can be_________ by humans. It is a burst of white noise that people say sounds like static on the radio, she says. Its life-saving potential is_________ .

　　She conducted an experiment in which people were filmed by thermal-imaging cameras trying to find their _________ out of a large smoke-filled room. It_________ them nearly four minutes to find the door without a sound alarm,_________ only 15 seconds with one.

　　Withington studies how the brain _________ sounds at the university. She says that the _________ of a wide band of frequencies can be pinpointed more easily than the source of a narrow band. Alarms _________ on the same concept have already been installed on emergency vehicles.

　　The alarms will also include rising or falling frequencies to_________ whether people should go up or down stairs. They were_________ with the aid of a large grant from British Nuclear Fuels.

　　第 51 题

　　A.change

　　B.cure

　　C.demand

　　D.set

　　【正确答案】： A

　　第 52 题

　　A.to

　　B.along

　　C.by

　　D.with

　　【正确答案】： C

　　第 53 题

　　A.slow

　　B.deaf

　　C.blind

　　D.lame

　　【正确答案】： C

　　第 54 题

　　A.close

　　B.wide

　　C.small

　　D.high

　　【正确答案】： B

　　第 55 题

　　A.form

　　B.affect

　　C.create

　　D.determine

　　【正确答案】： D

　　第 56 题

　　A.watched

　　B.made

　　C.learnt

　　D.heard

　　【正确答案】： D

　　第 57 题

　　A.unlikely

　　B.uncertain

　　C.great

　　D.little

　　【正确答案】： C

　　第 58 题

　　A.life

　　B.way

　　C.method

　　D.skill

　　【正确答案】： B

　　第 59 题

　　A.took

　　B.spent

　　C.used

　　D.had

　　【正确答案】： A

　　第 60 题

　　A.but

　　B.even

　　C.so

　　D.if

　　【正确答案】： A

　　第 61 题

　　A.processes

　　B.produces

　　C.takes

　　D.refuses

　　【正确答案】： A

　　第 62 题

　　A.feature

　　B.quality

　　C.diagram

　　D.source

　　【正确答案】： D

　　第 63 题

　　A.accepted

　　B.based

　　C.kept

　　D.focused

　　【正确答案】： B

　　第 64 题

　　A.describe

　　B.demand

　　C.consider

　　D.indicate

　　【正确答案】： D

　　第 65 题

　　A.developed

　　B.bought

　　C.discovered

　　D.sent

　　【正确答案】： A