基本技能再回顾及应用
要求:
1。一定要控制自己不看原文直接选择答案的冲动!
2。写出每一个题目里面的错误类型,。
下面的各篇文章题目对我们以上讲过的干扰选项的所有情形包含在内了。要小心应付。
Passage I.
In the villages of the English countryside there are still people who remember the good old days when no one bothered to lock their doors. There simply wasnt any crime to worry about.
Amazingly, these happy times appear still to be with us in the worlds biggest community. A new study by Dan Farmer, a gifted programmer, using an automated investigative program of his own called SATAN, shows that the owners of well over half of all World Wide Web sites have set up homes without fitting locks to their doors.
SATAN can try out a variety of well-known hacking tricks on an Internet site with-out actually breaking in. Farmer has made the program publicly available, amid much criticism. A person with evil intent could use it to hunt down sites that are easy to burgle .
But Farmer is very concerned about the need to alert the public to poor security and, so far, events have proved him right. SATAN has done more to alert people to the risks than cause new disorder.
So is the Net becoming more secure? Far from it. In the early days, when you visited a Web site your browser simply looked at the content. Now the Web is full of tiny programs that automatically download when you look at a Web page, and run on your own machine. These programs could, if their authors wished, do all kinds of nasty things to your computer.
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