On October 12, 1989, some Chinese scientists were working at the computers to look for information they needed. Suddenly they saw a lot of very bright spots crossing the computerss screens. At the same time the computers were working much slower. To find out what was happening they stopped their work to check some parts of the computers. To their horror, they found out that most of their stored information was got rid of by computer viruses (病毒)! Obviously all these computers had been infected by computer viruses.
It is said that the computer 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 (才智). These kinds of computer viruses are named Jerusalem(耶路撒冷)Viruses. These viruses can stay in computers for a long time. When the time comes they will attack the computers by lowering the functions (功能), damaging their normal programs or even getting rid of all the information.
We now come to know that Jerusalem Viruses often attack computers on Fridays and that they are spreading to a lot of computers. Among the countries that suffered computer 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.
56.The group of young men created the viruse to________.
A. damage the computers
B. test their ability
C. tell the world that they were intelligent
D. play a trick on operators of the computers
57.According to the passage, computer viruses seem to________.
A. have been in nature for years
B. exist in any computers
C. be difficult to get rid of at present
D. be able to be got rid of in the near future
58.The most serious damage caused by the viruses is that________.
A. the computers functions are lowered
B. the normal programs are damaged
C. all the information stored in the computers is gone
D. the computers infected by the viruses can no longer be used
59.According to the passage, which of the following is true?
A. Last year four countries found their computers were infected by viruses.
B. The viruses will come to a new computer after staying in the old one for some time.
C. Scientists are trying to find a way to get rid of the viruses.
D. The Jerusalem Viruses are a great harm to human health.
GRE issue作文新题库解析:国民的安乐
GRE写作备考练习6大重点内容
GRE issue写作范文:领导者的能力
GRE Issue写作重点题目:历史研究
GRE写作文章五部分要点需掌握
GRE写作高效技巧:学会拿自己说事儿
GRE满分写作Argument4篇范文
GRE作文复习初期应从三方面入手
GRE写作提分15个例句
GRE高频作文句式整理:逻辑问题+是非问题
GRE写作范文点析:重辩证思维
GRE issue作文新题库解析:推陈出新技术的作用
GRE写作常用好词汇和短语总结
GRE写作常见替换词汇总
GRE issue作文新题库解析:政策问题决策者
中国学生GRE写作三大逻辑问题失分点
GRE作文中Argument经典模板句式
GRE写作提问方式如何轻松应对
GRE写作范文:达到目标的手段
不断的模仿 短时间提高GRE写作能力
GRE issue作文新题库解析:法令保护原生态
GRE作文满分8大秘籍
GRE作文15大题型提分例句分析
正确看待GRE作文高频试题得高分
GRE作文备考书籍推荐:黄皮书
GRE issue作文新题库解析:掌权者五年后让位
GRE issue作文新题库解析:了解社会特点最好方法
GRE作文常用短语:法律类
GRE写作高分通用模板介绍:五段阐述观点
GRE issue写作范文:个人和整体
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |