19．The average computer user has between 5 and 15 username/password combinations to log in different kinds of accounts．Some demand you use a specific number of symbols and digits，while others require you to change your password every 60 days．The feeling of confusion resulting from memorizing these login information has grown so common that it actually has a name：password fatigue（疲劳）．
Having to remember so many different passwords is annoying，but it can also be dangerous．Because it is virtually impossible to remember a unique password for each of these accounts，many people leave handwritten lists of usernames and passwords on or next to their computers．
（71）GWhile these practices make it easier to remember login information，they also make it easier for thieves to hack into accounts．
Single Sign-On （SSO） confirmation and password management software can help solve this problem．With SSO，users only need to remember one password to log in to the main system．
（72）DSSO software is typically used by large companies，schools，or libraries．
（73）EIf a user loses or forgets the password required to log in to SSO software，the user will then lose access to all of the applications linked to the SSO account．Users who rely on password management software face the same problems．
Although most websites or network systems allow users to recover or change lost passwords by providing email addresses or answering a prompt（提示），this process can waste time and cause further frustration．What is more，recovering a forgotten password is only a temporary solution．
（74）A
Some computer scientists have suggested computers rely on biometrics（生物测定学）．（75）F The use of biometrics raises questions concerning privacy and can also be expensive to practice．
Software engineers and computer security experts are still searching for the cure to password fatigue．Until they find the perfect solution，however，everyone will simply have to rely on the password system currently in place．
A．It does not address the larger problem of password fatigue．
B．These software programs have been built into many major web browsers
C．The problem with password management software makes users feel powerless．
D．The SSO software then automatically logs the user in to other accounts within the system．
E．However，SSO confirmation and password management software also have drawbacks．
F．This is a method of recognizing human users based on unique traits，such as fingerprints，voice，or DNA．
G．Others solve this problem by using the same password for every account or using extremely simple passwords．
分析 本文讲述了计算机用户由于用户名和密码过多而记混，产生一种叫"密码疲劳"的现象．如何解决这一问题，目前给出了一些方案但都不完美，需要进一步完善．
解答 71．G 根据下文"虽然这些做法更容易记住登录信息，但是它们也使小偷更容易窃取账户．"可知，G项"也有的人通过每一个账户都使用一个密码，或者使用非常简单的密码这个方法来解决这个问题．"符合语篇逻辑，故选G．
72．D 根据上文"With SSO，users only need to remember one password to log in to the main system．"讲解SSO的工作原理，下文"SSO software is typically used…"讲解SSO的使用区域，与D项中的关键词"The SSO software"和"the system"相呼应，故选D．
73．E 上文给出SSO的解决方案，下文主要叙述SSO软件和密码管理软件的缺点，所以此处应为转折，"…also have drawbacks"是关键词，故选E．
74．A 前文提到恢复一个被忘记的密码只是一个暂时的解决方案．A项"它没有解决密码疲劳的大问题"符合语境，故选A．75．F 根据上文中的"biometrics（生物测定学）"可知，它涉及到指纹，DNA等．故选F．
点评 该类题型要求从短文后的七个选项中（均为完整的句子）选出五个能填入文章空处的最佳选项，主要考查考生对文章的整体内容和结构以及上下文逻辑意义的理解和掌握．分析篇章结构，把握全篇文脉是解题的关键．
