Short Answer 解析3

●Passage分析

New kinds of viruses continue to plague computers and Internet sites around the world. When a virus is destroyed, variants of the same virus may reappear in a few days or weeks.The deviousness of malware developers should encourage computer and Internet users to continue to be vigilant.One way to guard computers against harmful viral strains is to make sure that virus protection programs are up-to-date.It is also helpful to avoid downloading files from unknown sites or unreliable publishers.If file sharing is practiced, then it is best to have reliable firewalls so that information and data shared by networks are properly secured and monitored.

Passage3是说明电脑病毒的危险性与应对方法的文章。文章指出为了防止电脑病毒带来损害，需要安装杀毒软件与防火墙，同时还要不断更新。

●Question　分析与答案

What security scheme shouId be empIoyed by peopIe who practice fiIe sharing?

Question提问的是分享文件（file sharing）时所需要的安全方案（security schemes）。符合题干的内容可以文章的最后一句中找到，即设置防火墙（have reliable firewalls）便可以保护资料。

词汇巩固pIague瘟疫，传染病，传染，感染　destroy破坏　variant不同的，相异的　reappear再现　encourage鼓励，激励　vigiIant警惕的，警戒的　harmfuI有害的　strain菌株，种类，品种　protection保护　unreIiabIe不能信任的secure安全的，无险的