15．Although websites such as Facebook and MySpace experienced rapid growth during the middle of the first decade of the 21st century，some users remain unaware of the fact that the information they post online can come back to haunt them．First，employers can monitor employees who maintain a blog，photo diary，or website．Employers can look for controversial（引起爭議的） employee opinions，sensitive information disclosures，or wildly inappropriate conduct．For example，a North Carolina newspaper fired one of its features writers after she created a blog on which she wrote about the strange things of her job and coworkers without signing her real name．
The second unintended use of information from social networking websites is employers who check on prospective employees．A June 11，2006New York Times article reported that many companies use search engines and social networking websites such as MySpace，Xanga，and Facebook to conduct background checks on college campuses．Although the use of MySpace or Google to check a student's background is somewhat unsettling to many undergraduates，the Times noted that the use of Facebook is especially shocking to students who believe that Facebook is limited to current students and recent alum（校友）．
Corporate employers are not the only people interested in college students'lives．The third unintended use of social networking websites is college administrators who monitor the Internet-especially Facebook-for student bad behavior．For example，a college in Boston's Back Bay expelled （除名） its student Government Association President for joining a Facebook group highly critical of a campus police sergeant．In addition，fifteen students at a state university in North Carolina faced charges in court for underage drinking because of photos that appeared on Facebook．
Although more users of websites such as Facebook are becoming aware of the potential dangers of online identities，many regular users still fail to take three basic security precautions（警惕）．First，only make your information available to a specific list of individuals whom you approve．Second，regularly search for potentially harmful information about yourself that may have been posted by mistake or by a disgruntled（不滿的） former associate．Third，never post obviously offensive material under your name or on your page，because，despite the best precautions，this material will likely make its way to the wider world．By taking these simple steps，members of the digital world can realize the many benefits of e-community without experiencing some of the damaging unintended consequences．

74．The main purpose of the passage is toB．
A．explain the growth of the digital world from the view of privacy
B．discuss the risks of the digital world and suggest ways to protect yourself
C．propose steps Facebook，MySpace，and Google can take to protect user privacy
D．illustrate potential unintended uses of private information
75．The writer implies that users should take all of the following actions to protect their online privacy EXCEPTC．
A．know to whom you make your online information available
B．a(chǎn)ctively hunt for damaging information posted about you or under your name
C．speak with employers to inform them of any misinformation published about you
D．a(chǎn)void uploading information that would be extremely damaging if it were discovered
76．According to the passage，which of the following does the author imply？A．
A．Information obtained unwillingly from the Internet is permitted in court．
B．It is impossible to protect yourself from unintended uses of information online．
C．Even if you restrict who can view your data，the government may still access it．
D．Done properly，posting offensive information about oneself brings no risk．
77．In the last paragraph the author mainlyD．
A．offers detailed examples to support previous viewpoints
B．further explores the ill-effects of the Internet on the protection of privacy
C．summarizes the points of the above paragraphs
D．provides suggestions to overcome the previously mentioned problems．

分析 作者通過舉例介紹了在許多人因?yàn)樵诰W(wǎng)上發(fā)布的信息而受到了困擾，之后作者給出了可以防止造成這種后果的建議．

解答 74～77  BCAD
74  B   主旨題：閱讀全文可知作者通過舉例介紹了在許多人因?yàn)樵诰W(wǎng)上發(fā)布的信息而受到了困擾，之后作者給出了可以防止造成這種后果的建議．故選B．
75  C  推理題：根據(jù)最后一段中"only make your information available to a specific list of individuals whom you approve"讓你的信息到一個特定的只有你能批準(zhǔn)的列表，可知A正確；根據(jù)最后一段中"regularly search for potentially harmful information about yourself that may have been posted by mistake or by a disgruntled（不滿的）former associate"定期搜索潛在的對自己有害的信息，這些信息可能是錯貼或一名心懷不滿的前助理發(fā)布的，由此可知B正確；根據(jù)最后一段中"never post obviously offensive material will likely make its way to the wider world"從不發(fā)布會在更廣闊范圍內(nèi)傳播的有攻擊性的材料，因此D正確；根據(jù)例子可知C項(xiàng)錯誤．故選C．
76  A  推理題：根據(jù)第三段中"fifteen students at a state university in North Carolina faced charges in court for underage drinking because of photos that appeared on Facebook"北卡羅萊納州立大學(xué)的15個學(xué)生在法庭上面臨未成年酗酒指控，因?yàn)槌霈F(xiàn)在Facebook上的照片，可知網(wǎng)絡(luò)上的信息在法庭上是被承認(rèn)的．故選A．
77   D  推理題：閱讀最后一段內(nèi)容可知作者給出了可以防止網(wǎng)絡(luò)信息泄露造成嚴(yán)重后果的建議．故選D．

點(diǎn)評 做閱讀理解時要快速的瀏覽全文，把握文章主旨大意，帶著問題回到原文，尋找細(xì)節(jié)或概括相應(yīng)的答案，最后要理清作者寫作思路．

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