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
国际英语资讯:Electricity restored in almost all Venezuela: minister
国际英语资讯:Chinese firm helps train Indonesian students in drilling machine operation
国际英语资讯:British business leaders call for taking no-deal option off table
国内英语资讯:Chinese FM talks about issues of mutual concern with French counterpart on phone
国际英语资讯:Interview: Chinese takeover brings no challenge but growth, says German company EEW
国际英语资讯:Iranian FM arrives in Iraqis capital to prepare for Presidents visit
体坛英语资讯:Chinas aces Wu, Fan won slivers at short track speed skating worlds
中国“两会”吸引世界目光 这些热词引发外国专家热议
国际英语资讯:Competition, cooperation needed in energy development, environment protection: U.S. energy s
国王与鞋匠
国际英语资讯:Russia says ready to resume parliamentary contacts with U.S.
日本研发出智能软件 不等下手就能识别小偷
国际英语资讯:China-themed books by British authors launched at London Book Fair
体坛英语资讯:Chen dashes Tais hat-trick hope at All England Open
体坛英语资讯:Solaris future still in the air despite Real Madrid win
超贴心!手术帽上写名字,医生的这个小创意关键时刻能救人
特斯拉的CEO马斯克要在火星上建公园
国际英语资讯:Boeing promises to offer technical assistance over Ethiopian Airlines plane crash
国际英语资讯:Nigerian president expresses sadness over Lagos school building collapse
国内英语资讯:Large indoor ski resort to open in southern China
国内英语资讯:China to invest more in emerging industries
维密式身材不再吃香,原来女生没有那么热衷暴瘦
体坛英语资讯:Beijing take Chinese Womens Volleyball Super League crown
体坛英语资讯:Preview: Europe a factor in Premier League weekend games
国际英语资讯:Sudan extends condolences to Ethiopia over plane crash
最高人民法院、最高人民检察院工作报告双语要点
国际英语资讯:Palestinians in Hamas-run Gaza protest for 2nd day against economic deterioration
国际英语资讯:British PMs Brexit deal rejected by parliament again
娱乐英语资讯:Warner Bros. Entertainment chief to step down amid sex scandal
体坛英语资讯:Atletico Paranaense, Penarol coast to victory in Copa Libertadores
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |