综合类职称英语B级考试完形填空强化练习(5)-查字典英语网
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综合类职称英语B级考试完形填空强化练习(5)

发布时间:2016-03-01  编辑:查字典英语网小编

  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

  

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