题目内容
14.‘Iris scan (虹膜扫描),please,'the bank's computer voice tells you.You step up and the computer reads your eye,comparing it to the stored file it has of your iris.The images had better match-otherwise you won't be able to get your money.Iris scanning and other technologies,such as fingerprint and voice scanning,have appeared in many science fiction movies in the past.Today,these advanced technologies are part of the real world.They are common at work,the bank,the airport,and your local prison.The iris scan,fingerprint scan,and voice scan are all examples of biometrics( 生物测定学) a fast developing area of automatic personal identification technology.Basically,biometrics uses various ways to verify a person's identity,based on the individual's unique characteristics,including fingerprints,voices,irises,body heat patterns,facial images,handprints,signatures and so on.
Biometrics identification systems have a number of advantages over password systems.The primary advantage is that an individual has to be physically present in order to be identified.Another important advantage is that there are no passwords to remember,forget,lose or steal.
The voice scan is the simplest and most affordable form of biometrics.It only requires a computer,a microphone and the correct software.The software records a subject's voice and then compares it to a stored voice sample for identification purposes.
For additional safety,fingerprint and handprint scans can also be employed.Fingerprint scans take the image of a fingerprint and compare it to a stored file of prints.Handprint scans identify the unique features of a hand.
Iris scans currently give the highest level of accuracy among all the available biometrics systems.Another technology,full facial scans,is currently in use at border crossings and airports.Facial scanning equipment can actually track and identify moving faces within a crowd.
The potential of biometrics is exciting and encouraging.With continued development,testing,and application,current technologies will become even more effective in the future.Soon,the days of password and car keys will be gone.Just don't leave home without your fingerprints!
61.The first paragraph serves as a(n)C.
A.conclusion
B.comment
C.example
D.explanation
62.The underlined word"verify"in Paragraph 2 probably means"A".
A.confirm
B.develop
C.protect
D.change
63.Which is the most accurate form of biometrics?C
A.The voice scan
B.The fingerprint scan
C.The iris scan
D.The facial scan
64.What is the author's attitude towards the future of biometrics?D
A.He is uncertain about it.
B.He feels doubtful about it
C.He is worried about it.
D.He feels hopeful about it.
分析 本文是一篇科教类阅读,属于说明文,本文以生物测定法中的虹膜扫描为例展开,主要介绍了几种生物测定学中的确认人们身份的方法以及测定法对人类的贡献.
解答 61.C.段落分析题 根据文章第一段内容可知,本段主要讲的是诸多生物测定法中的一个"例子"-虹膜扫描.故选C.
62.A.词义猜测题 根据上下文内容可知,biometrics uses various ways to verify a person's identity句意为"不同的生物学测定法就是来‘确认'一个人的身份".故verify意为确认.故选A.
63.C.细节理解题 根据Iris scans currently give the highest level of accuracy among all the available biometrics systems可知,一个人的虹膜比指纹、声音、面貌更具独特性.故选C.
64.D.推理判断题 根据文章意思,作者介绍这几种测定方法时,表现出了这些测定法对人类的贡献,所以是"充满希望".故选D.
点评 本文是一篇科教类阅读,题目涉及多道主旨大意题,细节理解题,推理判断题.做题时学生应仔细阅读原文,把握文章主要内容,联系文章上下文内容并结合所给选项含义,从中选出正确答案,一定要做到有理有据,切忌胡乱猜测.
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