内容介绍：黑客充彻互连网
(A) Multiple Choice
1 A hacker is --------
A someone who breaks into and uses someone else’s computer.
B someone who breaks commercials..
C someone who fixes someone else’s computer.
D someone who does not know about computers.
2 The programs which were used by the hackers were -------
A made by the hackers and put on computers.
B not found by the experts.
C prepackaged and found on many computers.
D hard to find.
3 Yahoo, eBay, Amazon, CNN, Buy, eTrade and zNet are -------
A stores on the web.
B large commercial web sites.
C small commercial web sites.
D public government web sites.
(B) Conclusions
1 When the hacker puts the software on a computer, he waits to start it because --------
A he wants to tell the owner the software is there.
B he wants to tell the web site he is going to call.
C he needs to have the software on many computers
D he does not have enough time.
2 The attack put down the web sites because ---------
A they were not big web sites.
B the software told others not to use the web site.
C the web site managers shut down the site.
D there were so many calls at the same time that the web site could not work.
3 The companies which were attacked were worried because ----------
A people would go to other sites while their sites were down.
B the hackers might come to their company building.
C other companies would find out information about their site.
D advertisers would put banners on their web page.
