2021[2017年职称英语理工类B级完型填空及答案3]职称英语B.doc

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1、20212017年职称英语理工类B级完型填空及答案3职称英语B2017年职称英语理工类B级完型填空及答案3职称英语B职称英语网权威发布2017年职称英语理工类B级完型填空及答案3，更多2017年职称英语理工类B级完型填空及答案3相关信息请访问职称英语考试网。Deborah Withington of Sound AlertIf 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

2、 all that_1_ directional sound alarms capable of guiding you to the exit.Sound Alert, a company_2_ the University of Leeds, is installing the alarms in a residential home for_3_ people in Sommerset and a resource centre for the blind in Cumbria._4_produce a wide range of frequencies that enable the

3、brain to determine the _5_ is coming from.Deborah Withington of Sound Alert says that the alarms use most of the frequencies that can be _6_ by humans. It is a burst of white noise_7_ people say sounds like static on the radio, he says. Its life-saving potential is greatShe conducted an experiment i

4、n which people were filmed by thermal-imaging cameras trying to find their way out of a large_8_ room. It_9_ them nearly our minutes to find the door_10_ a sound alarm, but only 15 seconds with one.Withington studies how the brain_11_ sounds at the university. She says that the _12_ of a wide band o

5、f frequencies can be pinpointed more easily than the source of a narrow band. Alarms_13_ on the same concept have already been installed on emergency vehicles.The alarms will also include rising or falling frequencies to indicate whether people should go up_14_ down stairs. They were_15_ with the ai

6、d of a large grant from British Nuclear Fuels.1. A) without B)with C)having D)selling2. A) run by B)changed by C) decorated by D)criticized by3. A) slow B)deaf C)blind D)lame4. A) Alarms B) Alarm C) The alarm D) The alarms5. A) noise B) sound C) music D) bell6. A) watched B) produced C) learnt D) he

7、ard7. A) where B) what C) that D) how8. A) smoked B) smoke-filled C) filled with smoke D) smoke-filling9. A) has taken B) takes C) took D) will take10. A) on B) near C) without D) from11. A) processes B) produces C) possesses D) proceeds12. A) feature B) quality C)diagram D) source13. A) basis on B) base on C) basing on D) based on14. A) or B) and C) but D) otherwise15. A) developed B) determined C) discovered D) deliveredkey: BACDB DCBCC ADDAA第 3 页 共 3 页