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  3. Imagine you went to a restaurant with your girlfriend，had a burger，paid with a credit card，and left．The next time you go there，t

Imagine you went to a restaurant with your girlfriend，had a burger，paid with a credit card，and left．The next time you go there，t

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问题     Imagine you went to a restaurant with your girlfriend，had a burger，paid with a credit card，and left．The next time you go there，the waiter or waitress，armed with your profile data，  greets you with，“Hey Joe，how are you?Mary is over there in the seat you sat last time．Would you like to join  her for dinner again?”Then you find out that your burger has been cooked and placed on the table．Forget the fact that you are with another date and are on a diet that doesn’t include burgers.
  Sound a little bizarre?To some，this is the restaurant equivalent of the Internet．The Net’s ability to profile you through your visits to and interactions at websites provides marketers with an enormous amount of data on you——some of which you may not want them to have.
    Are you aware that almost every time you access a website you get a“cookie”?Unfortunately，it’s not the Mrs．Field’s recipe．A cookie on the Internet is a computer code sent by the site to your computer—usually without your knowledge．During the entire period of time that you are at the site．the cookie is collecting information about yourself，including where you visit，how long you stay there，and how frequently you return to certain pages.
    While this mav sound scary enough，cookies aren’t even the latest in technology.A new system call I——librarian Alexa——named after the legendary third century B．C．1ibrary in Alexandria，Egypt——does even more．While cookies track what you are doing at 0ne site．Alexa collects data on all your web activities，such as which site you visit next，how long you stay there，whether you click on advertisements，etc．All this information is available to marketers，who use it to market more effectively to you．Not only do you not get paid for providing the information，you probably don’t even know that you are giving it．
What can be learned about“Alexa”?
选项 A、Alexa is named after an ancient hero in Egypt．
B、Alexa is installed in libraries．
C、Alexa can provide all the necessary information about history．
D、Alexa can provide more data to marketers than a cookie．
答案D
解析 细节题。根据题干关键词Alexa定位到第四段，最后“the cookie is collecting information about yourself，including where you visit，how long you stay there，and how frequently you return to certain pages．(cookie收集关于您自己的信息，包括您访问的地方、在那里停留的时间和返回特定页面的频率)”以及第四段最后一句“Not only do you not get paid for providing the information，you probably don’t even know that you are giving it．(你不仅不会因为提供信息而得到报酬，你甚至可能都不知道你在提供信息。)”和B项的“It collects information on you usually without your knowing it．(它通常在你不知情的情况下收集你的信息)”意思相符，故本题选B。其他三项，A项“Alexa is named after an ancient hero in Egypt(亚力克萨是以埃及一位古代英雄的名字命名的)”，和文章中第四段“named after the legendary third century
B．C．1ibrary in Alexandria，Egypt(以传说中的公元前三世纪埃及亚历山大的图书馆命名)”不相符，属于混淆概念，排除；B项“Alexa is installed in libraries．(安装在图书馆中)”文章未提及，属于过度推断，排除；C项“Alexa can provide all the necessary information about history．(可以提供所有必要的历史信息)”和第四段“Alexa collects data on all your web activities(它可以收集所有网络活动的数据)”不符合，排除；只有D项符合。故本题选D。
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