職稱英語完型填空專項練習題

　　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 change 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 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 great"She conducted an experiment in 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 of 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 aid of a large grant from British Nuclear Fuels.

　　1. A) without    B)with    C)having    D)selling .

　　2. A) run by     B)changed by    C) decorated by   D)criticized by .

　　3. A) slow    B)deaf    C)blind    D)lame.

　　4. A) Alarms    B) Alarm    C) The alarm   D) The alarms.

　　5. A) noise   B) sound   C) music   D) bell .

　　6. A) watched   B) produced   C) learnt   D) heard .

　　7. A) where  B) what   C) that   D) how.

　　8. A) smoked   B) smoke-filled   C) filled with smoke   D) smoke-filling .

　　9. A) has taken   B) takes   C) took   D) will take.

　　10. A) on   B) near   C) without   D) from.

　　11. A) processes   B) produces   C) possesses   D) proceeds .

　　12. A) feature   B) quality   C)diagram   D) source .

　　13. A) basis on   B) base on   C) basing on   D) based on .

　　14. A) or   B) and   C) but   D) otherwise .

　　15. A) developed   B) determined   C) discovered   D) delivered .

　　答案：1~5 BACDB   6~10 DCBCC   11~15 ADDAA

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