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  3. How to protect your computer from being attacked by a virus Be sure to have a good anti-virus program and update it regularly

How to protect your computer from being attacked by a virus Be sure to have a good anti-virus program and update it regularly

admin2020-11-14  46
问题             How to protect your computer from being attacked by a virus
   Be sure to have a good anti-virus program and update it regularly. You also need to make sure that your Internet browser and operating system have had all the necessary security patches (补丁) applied.
   Then, you may think you have a virus, but how do you really tell? You scan your system for viruses with a software program. If you don’t have anti-virus software, you can purchase it online or you can use Panda Software’ s free Active Scan that will scan you computer and report on infections.
   If the virus scan finds an infection, it will give you the name of the virus or viruses that you have contracted. If your computer is infected, you need to take immediate action. Depending on the severity of the virus, the health of your computer as well as the security of your computer data may be at risk.  
How do you know that your computer is infected? You know it by _______________ your computer for virus with a software program.
选项
答案scanning
解析 本题问的是“怎样判断电脑中了病毒”，从原文“you may think you have a virus，but how do you really tell?You scan your system for viruses with a software program”可得到答案。题干中scan作by的宾语，所以转化为scanning。
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本试题收录于： 大学英语三级B级题库大学英语三级分类
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