首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Singing Alarms Could Save the Blind If you cannot see, you may not be able to find your way out of a burning building -- and tha
Singing Alarms Could Save the Blind If you cannot see, you may not be able to find your way out of a burning building -- and tha
admin
2009-06-15
72
问题
Singing Alarms Could Save the Blind
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(51)directional sound alarms capable of guiding you to the exit.
Sound Alert, a company(52)the University of Leeds, is installing the alarms in a residential home for(53)people in Sommerset and a resource centre for the blind in Cumbria.(54) produce a wide range of frequencies that enable the brain to determine where the(55)is coming from.
Deborah Withington of Sound Alert says that the alarms use most of the frequencies that can be(56) by humans. "It is a burst of white noise(57)people say sounds like static on the radio," she 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(58)room. It(59)them nearly four minutes to find the door(60)a sound alarm, but only 15 seconds with one.
Withington studies how the brain(61)sounds at the university. She says that the(62) of a wide band of frequencies can be pinpointed more easily than the source of a narrow band. Alarms(63)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(64)down stairs. They were(65)with the aid of a large grant from British Nuclear Fuels.
选项
A、where
B、what
C、that
D、how
答案
C
解析
选择A、B、D均不能构成语义连贯的句子,而且语法上也有问题。选项C能使句子结构成为“It is... that”的强调句型。
转载请注明原文地址:https://kaotiyun.com/show/qJhd777K
本试题收录于:
职称英语理工类基础题库职称英语分类
0
职称英语理工类基础
职称英语
相关试题推荐
Themakingofweathervanesdevicesfixedonthetopofbuildingstoshowdirectionsofthewindisanancientskill,goingback
Themakingofweathervanesdevicesfixedonthetopofbuildingstoshowdirectionsofthewindisanancientskill,goingback
Themakingofweathervanesdevicesfixedonthetopofbuildingstoshowdirectionsofthewindisanancientskill,goingback
Themakingofweathervanesdevicesfixedonthetopofbuildingstoshowdirectionsofthewindisanancientskill,goingback
CementwasseldomusedinbuildingduringtheMiddleAges.
WilliamWrigleyfirststartedtoexperimentwithchewinggum.BuildingWrigleyempiretooknotonlytimeandmoney,butcreativ
Thecityhasdecidedtodoawaywithalltheoldbuildingsinitscenter.
Thecityhasdecidedtodoawaywithalltheoldbuildingsinitscenter.
随机试题
驱动防滑转系统在驱动过程中,一般将驱动车轮的滑动率控制在_______。
A.痈B.疽C.疔D.疖E.疹(1993年第79,80题)起于浅表,形小而圆,红肿热痛,容易化脓者为()
患儿,男,1岁。以面色苍白、纳差、乏力1个月人院。查体:心率138次/分,心尖区闻及Ⅲ级收缩期杂音,血象:Hb50g/L,RBC2.54×1012/L,血涂片红细胞以小细胞为主,中心浅染区扩大。应诊断为
试算价格调整是估价程序的重要一环,对估价师的专业知识、经验与判断要求很高。估价师必须衡量各试算价格的(),进而确定最后的估价额。
某公司进口货物一批,经海关审查未能确定其成交价格,决定采用进口货物的类似货物在国内市场的批发价格来计算,类似货物在国内市场的批发价格为40000人民币,关税税率为20%,增值税税率为17%,这样该货物的关税额和增值税额分别为()。
以下系创业板上市公司需暂停上市的情形的有()。[2012年真题]Ⅰ.连续3年亏损Ⅱ.2010年被CPA出具否定意见的审计报告,2011年被CPA出具无法表示意见的审计报告Ⅲ.最近36个月内累计受到交易所3次公开谴责Ⅳ.6月30日
最近,某省的就业办公室就目前该省的就业问题展开研讨,请你也加入到他们的讨论当中,根据你所学的知识,对下列问题加以分析。该省为了促进就业、降低失业率,决定扩大省政府的支出、加大投资规模,这是一种()。
某民营企业是一个由几十名员丁的小作坊式机电企业发展起来的,目前已拥有3000多名员工,年销售额达几千万元,其组织结构属于比较典型的职能制形式。随着技术更新和竞争的加剧,高层领导者开始意识到,企业必须向产品多元化方向发展。其中一个重要的决策是转产与原生产工艺
下列指令中,对软件设计者完全透明的指令是()。
若要在报表最后输出某些信息,需要设置的是()。
最新回复
(
0
)