17.A credit card that won't work unless its owner's voice is heard may become an important weapon in the fight against economic fraud(欺詐).
The card using a built-in voice-recognition chip requires users to give a spoken password that it recognizes.The idea is to prevent thieves from using a stolen card to buy goods online.
A model built by engineers in California packs a microphone,a loudspeaker,a battery and a voice-recognition chip into a standard-sized credit card.The card is the length and width of an ordinary credit card but about three times as thick.The company now plans to make it thinner.
The voice card is based on an earlier Beep card technology designed to prevent fraud in online deals.The Beep card has no microphone,but has a built-in loudspeaker to utter an audible (聽得見的) ID signal by a computer's microphone to an online server(服務(wù)器).By confirming that signal matches the information in the card,the server can make sure that the user is not simply keying in a credit card number but actually has the card in his hand.The ID code,which only the server knows,changes each time the card is used.
This prevents fraudsters recording the beeps,noting the card details and then playing back the audible ID when they key in the details later.But this earlier Beep card technology cannot prevent illegal use of stolen cards.The new voice card can.The new voice card doesn't identify itself by its ID until it has confirmed the real user's spoken password.Thieves will be unable to use the card because even if they knew the password they would have to be able to copy the owner's voice with a high degree of accuracy.The challenge for Beep card has been to develop voice-recognition and audio circuitry(聲音電路).
The voice-recognition credit is powered by a mini battery.To extend batter life,the electronics have only to be switched on when the card is being used.Pressing a button on the card's surface allows one to hear a female voice saying,"Say your password."If the voice-recognition software proves that the password is real,it sends its ID,which the server then identifies,allowing the deal to continue.
59.Why is the voice credit an important innovation?D
A.It is cheap to make and buy.B.It can leave voice messages.
C.It makes online shopping easy.D.It makes fraud more difficult.
60.What is the problem with the model card?B
A.It is too large.B.It is too thick.
C.It can't be used online.D.It has no loudspeaker.
61.Which of the following about the earlier card is TRUE?D
A.Its owner can change the ID code at will.
B.Its user needn't key in the credit card number.
C.It can record its user's spoken password.
D.It can be used by someone who has stolen it.
62.What can we infer from the last paragraph?A
A.Further improvement should be made to extend battery life.
B.Only female voice passwords can be recognized by the card.
C.There are no limits to the use of the card.
D.Female customers will like using it.
分析 本文主要介紹了一種新型的信用卡,可以利用聲音來進(jìn)行消費(fèi)使用,比傳統(tǒng)的信用卡更安全方便,但也有自己的缺點(diǎn).
解答 59-62DB DA
59.D 根據(jù)A credit card that won't work unless its owner's voice is heard may become an important weapon in the fight against economic fraud(欺詐).可知利用聲音識(shí)別的信用卡可以使欺詐變得更難,故答案為D
60.B 根據(jù)The card is the length and width of an ordinary credit card but about three times as thick.可知,model card更厚一些,故答案為B
61.D 根據(jù)But this earlier Beep card technology cannot prevent illegal use of stolen cards.可知以前的信用卡會(huì)被盜刷,故答案為D
62.A 根據(jù)To extend batter life,the electronics have only to be switched on when the card is being used.可知,延遲電池的壽命是下一步需要提高的地方,故答案為A
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