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    17．People are being lured （引诱） onto Facebook with the promise of a fun，free service without realizing they're paying for it by giving up large amounts of personal information．Facebook then attempts to make money by selling their data to advertisers that want to send targeted messages．
    Most Facebook users don't realize this is happening．Even if they know what the company is up to，they still have no idea what they're paying for Facebook because people don't really know what their personal data is worth．
    The biggest problem，however，is that the company keeps changing the rules．Early on，you keep everything private．That was the great thing about facebook-you could create your own little private network．Last year，the company changed its privacy rules so that many things-your city，your photo，your friends'names-were set，by default （默认） to be shared with everyone on the Internet．
    According to Facebook's vice-president Elliot Schrage，the company is simply making changes to improve its service，and if people don't share information，they have a"less satisfying experience"．
    Some critics think this is more about Facebook looking to make more money．Its original business model，which involved selling ads and putting them at the side of the page，totally failed．Who wants to look at ads when they're online connecting with their friends？
    The privacy issue has already landed Facebook in hot water in Washington．In April，Senator Charles Schumer called on Facebook to change its privacy policy．He also urged the Federal Trade Commission to set guidelines for social-networking sites．"I think the senator rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them，"Schrage admits．
    I suspect that whatever Facebook has done so far to invade our privacy is only the beginning，which is why I'm considering deactivating（撤销） my account．Facebook is a handy site，but I'm upset by the idea that my information is in the hands of people I don't know．That's too high a price to pay．

    31．What do we learn about Facebook from the first paragraph？C
    A．It is a website that sends messages to targeted users．
    B．It makes money by putting on advertisements．
    C．It profits by selling its users'personal data．
    D．It provides loads of information to its users．
    32．What does the author say about most Facebook users？B
    A．They are reluctant to give up their personal information．
    B．They don't know their personal data enriches Facebook．
    C．They don't identify themselves when using the website．
    D．They care very little about their personal information．
    33．Why does Facebook make changes to its rules according to Elliot Schrage？A
    A．To provide better service to its users．
    B．To follow the Federal guidelines．
    C．To improve its users'connectivity．
    D．To expand its scope of business．
    34．What does Senator Charles Schumer advocate？C
    A．Setting guidelines for advertising on websites．
    B．Banning the sharing of users'personal information．
    C．Formulating regulations for social-networking sites．
    D．Removing ads from all social-networking sites．
    35．Why does the author plan to cancel his Facebook account？C
    A．He is dissatisfied with its current service．
    B．He finds many of its users untrustworthy．
    C．He doesn't want his personal data abused．
    D．He is upset by its frequent rule changes．

    分析 文章的主题围绕当下很受欢迎的社交网站Facebook，揭露其将用户资料出售给广告商．而大多数用户并未意识到这一点，因为他们并没有意识到个人资料的重要性．作者的态度和立场非常鲜明，并表示考虑注销自己的账户．

    解答 31．答案 C 细节理解题．根据第一段Facebook then attempts to make money by selling their data to advertisers that want to send targeted messages．脸谱网站在顾客不知情的情况下，通过把顾客的信息卖给广告商来挣钱，故选C．
    32．答案 B  细节理解题．根据第二段Most Facebook users don't realize this is happening．大多数脸谱网站的顾客并不知道或者不懂网站怎样通过卖自己的信息来挣钱故选B
    33．答案 A 细节理解题，根据第四段中"the company is simply making changes to improve its service，"可知，Elliot Schrage说脸谱网站只是为了提高它的服务质量．故选A
    34．答案 C  细节理解题．根据倒数第二段中"He also urged the Federal Trade Commission to set guidelines for social-networking sites．"可知，Senator Charles Schumer主张给社交网站设置一些规章制度，故选C
    35．答案 C 细节理解题．根据最后一段I'm upset by the idea that my information is in the hands of people I don't know．That's too high a price to pay．可知作者要取消自己在脸谱网站上的注册是因为他不愿把自己的信息交给不让人信任的人手里，认为这样代价太高，对个人信息泄漏这件事情不满．故选C．

    点评 1、要想做好科普英语阅读理解题，同学们就要注意平时多读科普知识类文章，学习科普知识，积累常见的科普词汇，从根本上提高科普英语的阅读能力．
    2、要熟悉科普类文章的结构特点．科普类文章一般由标题（Head line），导语（Introduction），背景（Back ground），主体（Main body）和结尾（End）五部分构成．标题是文章中心思想高度而又精辟的概括，但根据历年的高考情况来看，这类阅读理解材料一般不给标题，而要同学们选择标题．导语一般位于整篇文章的首段．背景交待一个事实的起因．主体则对导语概括的事实进行详细叙述，这一部分命题往往最多，因此，阅读时，同学们要把这部分作为重点．结尾往往也是中心思想的概括，并与导语相呼应，命题者常在此要设计一道推理判断题．　　
    3、在进行推理判断时，同学们一定要以阅读材料所提供的科学事实为依据，同时所得出的结论还应符合基本的科普常识．

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    D．Canada
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    B．the author's father spoke English poorly
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    D．the author's parents taught her language by talking a lot
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    A．think clearly
    B．express herself well
    C．speak
    D．open her mouth
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    科目：高中英语 来源： 题型：选择题

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    科目：高中英语 来源： 题型：选择题

    6．But I want five thousand dollars _________．I'll need some operating cash，right？（　　）
    A．in debtB．in generalC．in advanceD．in fact

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    科目：高中英语 来源： 题型：选择题

    7．-In school we teachers never give a child a chance to discover his mistakes．We do it all for him．
    -Exactly．We act as if he will never notice a mistake ______ it is pointed out to him．（　　）
    A．ifB．unlessC．afterD．though

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