2009年12月英语六级阅读理解的全真模拟题五_大学英语阅读

　　A) those happy times appear still to be with us

　　B) there simply wasnt any crime to worry about

　　C) many sites are not well-protected

　　D) hackers try out tricks on an Internet site without actually breaking in

　　22. SATAN, a program designed by Dan Farmer, can be used ______.

　　A) to investigate the security of Internet sites

　　B) to improve the security of the Internet system

　　C) to prevent hackers from breaking into websites

　　D) to download useful programs and information

　　23. Farmers program has been criticized by the public because ______.

　　A) it causes damage to Net browsers

　　B) it can break into Internet sites

　　C) it can be used to cause disorder on all sites

　　D) it can be used by people with evil intent

　　24. The authors attitude toward SATAN is ______.

　　A) enthusiastic

　　B) critical

　　C) positive

　　D) indifferent

　　25. The author suggests in the last paragraph that ______.

　　A) we should make full use of the Internet before security measures are strengthened

　　B) we should alert the most influential businessmen to the importance of security

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