2021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、2021年职称英语理工类B级完型填空及答案3职称英语BDeborah 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 pany in Leeds could change all that_1_directional sound alarms capable of guiding you to the e_it.Sound Alert, a pany_2_the Universi

2、ty 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 ing from.Deborah Withington of Sound Alert says that the alarms use most of the fre

3、quencies 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 e_periment in which people were filmed by thermal-imaging cameras trying to find their way out of a large_8_room.It_9_them nearly ou

4、r 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 in

5、stalled 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)selling2.A) run by B)changed by C) decorated by D)criti

6、cized 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) heard7.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) wi

7、ll 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 4 页 共 4 页