一道初二英语阅读题:On October 12,1989,some Chinese scientists were working at the computers to look for the information they needed.Suddenly they saw a lot of very bright spots(点) crossing the computer’s screens.At the same moment the computers were working much slower.To find out what was happening they stopped their work to look over some parts of the computers.To their surprise,they found out that most of their stored information was got rid of by computer

一道初二英语阅读题:
On October 12,1989,some Chinese scientists were working at the computers to look for the information they needed.Suddenly they saw a lot of very bright spots(点) crossing the computer’s screens.At the same moment the computers were working much slower.To find out what was happening they stopped their work to look over some parts of the computers.To their surprise,they found out that most of their stored information was got rid of by computer viruses!It was clear that all these computers had been infected by computer viruses.
It is said that the computer viruses were made by a group of young men who liked playing tricks(恶作剧).They all had a lot of computer knowledge.They made the viruses just to show their cleverness.This kind of computer viruses is named Jerusalem Viruses.These viruses can stay in computers for a long time.When the time comes,they will hit the computers by lowering the functions(降低功能),breaking their usual programmes or even getting rid of all the information.
We now come to know that Jerusalem Viruses often hit computers on Friday and that they are visiting a lot of computers.Among the countries that had computer viruses last year are Britain,Australia,Switzerland and the U.S.But till now,how to get rid of (除去) the terrible viruses is still a problem.
( ) 5.On October 12,1989,some Chinese scientists operated the computers to ___________.
A.look for what they wanted B.get rid of the very bright spots
C.look for Jerusalem Viruses D.repair some parts of them
( ) 6.The group of young men made the viruses to _____________.
A.break all the computers B.show they were clever
C.tell people they hated computers D.get some knowledge about computers
( ) 7.According to the passage,computer viruses seem to be_____________.
A.in any computer B.on computer’s screen
C.easy to make D.difficult to get rid of
( ) 8.Which of the following is true?
A.When the scientists stopped working they saw a lot of bright spots
B.A group of young man made a lot of different viruses
C.The most serious result by the viruses is to get rid of all the information
D.Only some European countries have Jerusalem viruses