On October 12, 1989, some Chinese scientists were working at the computers to look for inf

On October 12, 1989, some Chinese scientists were working at the puters to look for information they needed. Suddenly they saw a lot of very bright spots crossing the puters’s screens. At the same time the puters were working much slower. To find out what was happening they stopped their work to check some parts of the puters. To their horror, they found out that most of their stored information was got rid of by puter viruses ! Obviously all these puters had been infected by puter viruses.
　　It is said that the puter viruses were made by a group of young men fond of playing tricks. They all had excellent education. They created the viruses just to show their intelligence . These kinds of puter viruses are named Jerusalem（耶路撒冷）Viruses. These viruses can stay in puters for a long time. When the time es they will attack the puters by lowering the functions , damaging their normal programs or even getting rid of all the information.
　　We now e to know that Jerusalem Viruses often attack puters on Fridays and that they are spreading to a lot of puters. Among the countries that suffered puter viruses last year are Britain, Australia, Switzerland and the U.S. But fill now , how to get rid of the terrible viruses remains a problem.
【小题1】The group of young men created the virus to    .A．damage the putersB．test their abilityC．tell the world that they were intelligentD．play a trick on operators of the puters【小题2】According to the passage, puter viruses seem to    .A．have been in nature for yearsB．exist in any putersC．be difficult to get rid of at presentD．be able to be got rid of in the near future【小题3】The most serious damage caused by the viruses is that    .A．the puter’s functions are loweredB．the normal programs are damagedC．all the information stored in the puters is goneD．the puters infected by the viruses can no longer be usedC