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
key: BACDB DCBCC ADDAA
下一篇: 职称英语理工类完形填空练习(2)
体坛英语资讯:Late penalty gives Barca cup lifeline after Valverde rests key players
体坛英语资讯:S. African striker Ndlovu vows to help Zhejiang Greentown promote to Chinese Super League
娱乐英语资讯:Suzhou Orchestra brings Chinese folk music to Poland
国内英语资讯:Direct flight launched between Chinas Macao, Philippines Cebu
国际英语资讯:Pakistan to form new agency to build tourist-friendly country
国内英语资讯:More than 100 million Chinese register to volunteer
体坛英语资讯:Feature: Dortmund ahead of spectacular transfer as Hummels is likely to return
国内英语资讯:Ethiopia to commission Chinese built industrial park by end of February
体坛英语资讯:Winter training of Chinas national swimming team underway in SW China
国际英语资讯:Yemen Houthis claim launch of fresh bomb-laden drone attack on Saudi Jizan airport
国际英语资讯:No delays in Russian S-400 missiles delivery to Turkey: Erdogan
体坛英语资讯:Messi scores 400th league goal to help Barca reach halfway point
体坛英语资讯:(Feature) How Dortmund preparing to face Bayerns attacks
国际英语资讯:Greek president voices support for Croatias entry into Schengen area
体坛英语资讯:Iraq cruise into knockout stage of AFC Asian Cup
细数外国文学作品中的猪 哪一只最让你难忘?
体坛英语资讯:PSG to face Nimes in 2019-20 Ligue 1 opening round
体坛英语资讯:Iran beat Canada 3-0 in FIVB competition
情绪一点就炸:被拒绝之前,我先拒绝你
国际英语资讯:4 Chinese tourists injured after bus overturns in Chiang Mai, Thailand
每日阅读的6大好处
国际英语资讯:Yemeni govt, Houthis decide to continue meetings over swap prisoners
国际英语资讯:Chinese Lunar New Year serves bond between Chinese and Thais: Chinese ambassador
国内英语资讯:(Spring Festival) Across China: 2 minutes loving on the platform
体坛英语资讯:Almoez Ali scores 4 goals to help Qatar hammer DPR Korea 6-0
国际英语资讯:Chinese New Year reception held at U.S. Missouri governor mansion
体坛英语资讯:Sui/Han have good chance of Olympic gold, says choreographer Lori Nichol
体坛英语资讯:AFC Asian Cup: Jordan book first seat in knockouts, UAE get close by taming India
体坛英语资讯:AFC UAE 2019: China, S.Korea enter round of 16, Australia rebound
国际英语资讯:Britain witnesses hottest day of this year on Saturday