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四级模拟试题十一 含答案
四级模拟试题十一PART III CLOZE Decide which of the choices given below would best complete the passage if inserted in the corresponding blanks. Internet security experts have long known that simple passwords do not fully defend online bank accounts from [31] _______ fraud artists. Now a study suggests that a popular secondary security measure provides little additional protection. The study, produced jointly by researchers at Harvard and the Massachusetts Institute of Technology, looked at a technology called site-authentication images. In the system, currently used by [32] _______ institutions like Bank of America, ING Direct and Vanguard, online banking customers are asked to select a(n) [33] _______, [34] _______ a dog or chess piece, that they will see every time they [35] _______ in to their account. The [36] _______ is that if customers do not see their image, they could be at a [37] _______ Web site, [38] _______ to look like their banks, and should not enter their passwords. The Harvard and M.I.T. researchers tested that hypothesis. In October, they brought 67 Bank of America customers in the Boston area into a controlled environment and asked them to [39] _______ routine online banking activities, like [40] _______ account balances. But the researchers had secretly withdrawn the images. Of 60 participants who got that far into the study and whose results could be verified, 58 entered passwords [41] _______. Only two chose not to log on, citing security [42] _______. The [43] _______ is that site-authentication images increase security [44] _______ customers will not enter their passwords if they do not see the correct image, said Stuart Schechter, a computer scientist at the M.I.T. Lincoln Laboratory. From the study we learned that the premise is right less than 10 percent [45] _______. He added: If a bank [46] _______ ask me if they should [47] _______ it, I would say no, wait for something better. The system has some high-power
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