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: BACDB DCBCC ADDAA
实用口语情景轻松学:我怀疑我是否能及格
2011年实用口语练习:“挑刺儿”
如何用英语表达“你得减肥了”
9句狠话教你怎么用英语让人“滚开”
英语口语主题:交际英语热门话题47个(3--邀请)
英语口语-安慰
英语口语主题:交际英语热门话题47个(6--闲聊)
2011年实用口语练习:今天我做东
2011年实用口语练习:英语客套话
口语情景对话:走遍美国精选 当仁不让 ACT 3 - 2
2011年实用口语练习:我是无辜的
如何用英文表达“你活该”
如何用英文表达“我不太想做某事”
实用口语:关于衣服的必备短语
如何用英文表达“欣赏,感激”
2011年实用口语练习:Join a club 社团活动
实用口语情景轻松学:秋天是北京最好的季节
2011年实用口语练习:昙花一现式的一夜成名
2011年实用口语练习:出恭的各种表达
英语口语:怎样放“狠话”让对方离你远点
2011年实用口语练习:当猪飞起来的时候
男生女生:我们可以只当朋友吗?
如何用英文表达“满意”
英文结婚短信祝福语
如何用英语表达“原来啊…”
2011年实用口语练习:口语当中的ball
英语口语-商业信函用语引言
实用口语情景轻松学:有假钞的时候要送到银行去
2011年实用口语练习:高铁开通了
2011年实用口语练习:At the post office 在邮局
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |