2017年上半年大学英语四级专题练习

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2017年上半年大学英语四级专题练习

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2017年上半年大学英语四级专题练习

　　快速阅读

　　Questions 57 to 61 are based on the following passage.

　　InfraGard is a grass-roots effort to respond to the need for cooperation and collaboration in countering the threat of cyber crime and terrorism to private businesses and the government. By the end of September, there will be InfraGard chapters in all 50 states, Calloway said. With advice from the FBI, each local chapter will be run by a board of directors that includes members of private industry, the academic community and public agencies. Bands, utilities, and other businesses and government agencies will use a secure Web site to share information about attempts to hack into their computer networks. Members can join the system free. A key feature of the system is a two-pronged method of reporting attacks.

　　A "sanitized" description of a hacking attempt or other incident-one that doesn't reveal the name or information about the victim-can be shared with the other members to spot trends. Then a more detailed description also can be sent to the FBI's computer crimes unit to interfere if there are grounds for an investigation. Cyber crime has jumped in recent years across the nation, particularly in hotbeds of financial commerce and technology like Charlotte. "Ten years ago, all you needed to protect yourself was a safe, a fence and security officers," said Chris Swecker, who is in charge of the FBI's Charlotte office. "Now any business with a modem is subject to attack." FBI agents investigate computer hacking that disrupted popular Web sites including Amazon. com, CNN and Yahoo!

　　several North Carolina victims have been identified this year. The investigation has also identified computer systems in North Carolina used by hackers to commit such attacks. Prosecutions of hackers have been hampered by the reluctance of companies to report security intrusions for fear of bad publicity and lost business. Meanwhile, too many corporations have made it too easy for criminals by sacrificing security for speed and accessibility. Jack Wiles, who will lead the local InfraGard chapter's board, said a recent report estimated 97 percent of all cyber crime goes undetected. Wiles, a computer security expert, has a firewall on his personal computer to prevent hackers from getting into his files. "I get at least one report a day that somebody was trying to get into my computer," he said, "the Net is a wonderful place, but it's also a dangerous one."

　　57. From the first paragraph, we know ________.

　　[A] InfraGard is a protective measure against cyber crime

　　[B] InfraGard is a measure of cooperation and collaboration

　　[C] there will be 50 InfraGard chapters in all states

　　[D] private business and the government are now committing cyber crime

　　58. Each local chapter of InfraGard will be run by the following EXCEPT ________.

　　[A] academic communities

　　[B] public agencies

　　[C] FBI

　　[D] private industry

　　59. By saying "too many corporations...speed and accessibility" (Lines 3～4, Para. 3), the author means ________.

　　[A] too many corporations take no notice of the security problem of computers

　　[B] criminals are sacrificing security for speed and accessibility

　　[C] it's very easy to sacrifice security for speed and accessibility

　　[D] many companies suffer from computer hacking because they value speed and accessibility more than security

　　60. All the following are reasons for the rise in cyber crime EXCEPT ________.

　　[A] victims won't report intrusions by hackers

　　[B] victims have no firewalls

　　[C] the use of modem is increasing

　　[D] companies don't pay enough attention to security

　　61. It can be concluded from the passage that ________.

　　[A] not all hacking attempts are worthy of investigation

　　[B] information of the victims is inaccessible

　　[C] InfraGard chapters will be in effect by the end of September

　　[D] Amazon.com was often disrupted by hacking

　　58. C 细节题。由文章第一段第三句With advice from the FBI可知，FBI只是充当顾问，并无经营权，故选C。

　　59. D 语义题。被考查句原意为“很多公司为了保证网强的速度和可接入性而不顾及网络安全，这让网络犯罪变得非常容易。”言外之意是很多公司更重视网络速度和可接入性，从而遭到了电脑黑客的攻击，所以D正确。

　　60. B 推断题。虽然文章提到了firewall(防火墙)，但并没有说公司不使用防火墙是网络犯罪率升高的原因，故选B。而文章第三段第三句(A项)，第二段倒数第二句(C项)和第三段第四句(D项)则分别说明了网络犯罪率上升的原因。

　　61. A 推断题。文章第二段第二句指出，黑客攻击的详情会被送到FBI的电脑犯罪科，以确定是否需要对其深究，由此推断，并不是所有的黑客攻击都值得调查，所以A正确

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