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
新概念英语第一册 Lesson 95:Tickets,please
新概念英语第一册 Lesson 107:It’s too small
新概念英语第一册 Lesson 133:Sensational news
新概念英语第一册 Lesson 89:For sale
新概念英语第一册 Lesson 69:The car race 汽车比赛
新概念英语第一册 Lesson 117: Tommy’s breakfast
新概念英语第一册 Lesson 103:The French test
新概念英语第一册 Lesson 109:A good idea
新概念英语第一册 Lesson 131:Don’t be so sure
新概念英语第一册 Lesson 129:Seventy miles an hour
新概念英语第一册 Lesson 105:Full of mistakes
新概念英语第一册 Lesson 125:Tea for two
新概念英语第一册 Lesson 127:A famous actress
新概念英语第一册 Lesson 61:A bad cold
新概念英语第一册 Lesson 97:A small blue case
新概念英语第一册 Lesson 71:He’s awful
新概念英语第三册必背词汇(1)
新概念英语词汇随身听手册一D开头
新概念英语第一册 Lesson 81:Roast beef and potatoes
新概念英语第一册 Lesson 135: The latest report
新概念英语第一册 Lesson 91:Poor Ian
新概念英语第一册 Lesson 121:The man in the hat
新概念英语第一册 Lesson 93:Our new neighbour
新概念英语第一册 Lesson 87:A car crash
新概念英语第一册 Lesson 111:The most expensive model
新概念英语第一册 Lesson 65:Not a baby
裕兴新概念英语名师精讲第二册第1-96课
新概念英语第一册 Lesson 113:Small change
裕兴新概念英语名师精讲第一册第1-144课
新概念英语第一册 Lesson 63:Thank you,doctor
| 不限 | 
| 英语教案 | 
| 英语课件 | 
| 英语试题 | 
| 不限 | 
| 不限 | 
| 上册 | 
| 下册 | 
| 不限 |