职称英语考试理工类AB完形填空推荐练习题(5)

　　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 ___1__ directional sound alarms capable if 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 where 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. Its a burst of white noise __7___ 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 thermalimaging cameras trying to find their way out of a large __8___ room. It __9___ them nearly four 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____ 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

　　警报器救盲人

　　如果看不见，那你可能会因找不到路而逃不出一幢失火楼房，那将是致命的。英国利兹市的一家公司发明的一种可指方向的警报器可能会把你引向出口。

　　声音警报是一家由利兹大学设立的公司。该公司现在正在为位于萨莫塞特的一家盲人收容所和位于卡姆布雷亚的一家盲人资源中心安装此种装置。这种警报器发出的频率范围广，使人脑可以判断出声音的来源。

　　该公司的戴博拉威星顿称此种警报器使用人类可以听到的大部分音频。她说：它们是一种突出的频谱连续而均匀的噪音。人们感觉它们听上去就像是收音机发出的静电噪声，其在救人方面潜力巨大。

　　她进行了一次试验。她让人们在一所充满浓烟的大屋子里设法找到出路，同时她用热效应成像摄像机进行拍摄。在没有警报器时，这些人用了近4分钟才找到门，而在警报器的指引下，只用了15秒。

　　她在大学里对人脑如何处理声音进行研究，并提出与波段窄的频率相比，人们更容易发现波段宽的音响源。基于此理论的警报器已被应用于急救车上。

　　这种警报器也容纳了音频的升降，以指示人们上、下楼。这种设备是得到英国核燃料组织的大笔资助才开发成功的。[

　　解析标题：

　　Singing AlarmsCould Save the Blind

　　文章精读：

　　1. If you cannot see, you may not be able to find your way out of a burning building ---- and that could be fatal.

　　2. A company in Leeds could change all that ___1__ directional sound alarms capable of guiding you to the exit.

　　A. without B. with C. having D. selling

　　分析：通过阅读我们可以看出，空格后是一种装置，用它来改变当火灾发生时找不到出口的危险境况，所以要表达用。。。。装置意思的只能用介词with，带着、带有。本句的意思是：利兹市一家公司发明的一种可指方向的声音警报器能引导你到出口。

　　3. 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.

　　A. run by B. changed by

　　C. decorated by D. criticized by

　　分析：我们知道Sound Alert是一家公司的名字，从语意上判断应该是由某人经营，因此选择答案A较为合适。

　　3. A. slow慢的 B. deaf聋的 C. blind瞎的 D. lame瘸的

　　分析：这篇文章的核心内容就是有关盲人警报器的，而且后半句也提到a resource centre for the blind ，所以顺理成章地得出结论应是C。

　　4. ___4___ produce a wide range of frequencies that enable the brain to determine where the ___5__ is coming from.

　　4. A. Alarms B. Alarm C. The alarm D. The alarms

　　分析：我们知道该空的名词应出现在前文，上一句就提到Sound Alert, is installing the alarms in a residential home。。。，所以这里所要填的词也应该是the alarms,选择答案D。

　　5. A. noise噪音 B. sound声音 C. music音乐 D. bell铃

　　分析：句子前半句是说a wide range of frequencies，所以发出的应是sound,因此答案选B。

　　5. Deborah Withington of Sound Alert says that the alarms use most of the frequencies that can be ___6___by humans.

　　6. A. watched观看 B. produced 产生 C. learnt学习 D. heard听到

　　分析：文章一直在讨论警报器、声音，因此很容易推断应该是被人听到。

　　6. Its a burst of white noise __7___ people say sounds like static on the radio, she says. Its life-saving potential is great.

　　7. A. where B. what C. that D. how

　　分析：A、B、D都不能构成语意上的连贯，而只有C，构成一个句型，强调句，its .that .这句话强调的是主语。去掉itsthat，剩下的完整句子就是：A burst of white noise，people say，sounds like static on the radio。

　　7. She conducted an experiment in which people were filmed by thermalimaging cameras trying to find their way out of a large __8___ room.

　　A. smoked烟熏的 B. smoke-filled

　　C. filled with smoke D. smoke-filling使。。。烟火弥漫的

　　分析：从上下文可以看出，是一个定语修饰room，表示充满了烟火的房间

　　答案A，D意思不吻合，C作为定语，位置不应放在room前，应放后面。只有B才符合句子。

　　8. It __9___ them nearly four minutes to find the door __10____ a sound alarm, but only 15 seconds with one.

　　9. A. has taken B. takes C. took D. will take

　　分析：显然，这个空是考察常用句型：it takes / took sb some time to do sth.关键是确定动词时态，从前面看都是过去时态，所以选择C。

　　10. A. on B. near C. without D. from

　　分析：逗号后面的one应该是指a sound alarm，从连词but可以推断，前后应是意思相反，后面已有了with, 那么前句应是without, 所以选择C。读读意思很通顺。

　　9. Withington studies how the brain __11____sounds at the university.

　　A processes B. produces

　　C. possesses D. proceeds

　　分析：句子主语是the brain应和处理构成主谓关系，而其它动词均不合适，所以选择A。

　　10. She says that the __12___ of a wide band of frequencies can be pinpointed more easily than the source of a narrow band.

　　12. A. feature特征 B. quality质量、素质

　　C. diagram图解 D. source来源

　　分析：解题关键是要看出句子中主要结构是morethan, 后面出现核心词the source, 所以可以推断得出结论，前面的名词也应是source.这样符合比较级用法，用来进行比较的事物必须具有可比性。所以选D。

　　11. Alarms ___13____ the same concept have already been installed on emergency vehicles.

　　A. basis on B. base on C. basing on D. based on

　　分析：Alarms是主语，have already been installed是谓语，所以要填的动词应该是分词形式，做定语，所以四个答案只有D可能, be based on以。。。为基础。

　　12. The alarms will also include rising or falling frequencies to indicate whether people should go up __14___ down stairs.

　　A. or B. and C. but D. otherwise

　　分析：根据前半句的rising or falling frequencies，可以看出这句话也应该填连接词or, 表示或者。

　　13. They were __15__ with the aid of a large grant from British Nuclear Fuels.

　　A. developed B. determined C. discovered D. delivered

　　分析：主语they 代指the alarms, 后半句是说这种设备得到大笔资助。根据上下文，资助的目的是为了开发，所以应该选A。

　　14.A 根据上半句中的rising or falling frequencies,这里应填入or, 与上半句表达的意思相一致。音频升高表示上楼，音频降低表示下楼。

　　15. A. 首先确定主语They指的是第一句中的主语The alarms,后半句说这种设备得到大笔资助，根据上文内容，我们知道资助的目的是开发这种alarms,所以应该选择developed。