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  3. How to protect your computer from being attacked by a virus? First, be sure to have a good antivirus program and update it r

How to protect your computer from being attacked by a virus? First, be sure to have a good antivirus program and update it r

admin2021-04-22  26
问题     How to protect your computer from being attacked by a virus?
    First, be sure to have a good antivirus program and update it regularly. You will also want 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 antivirus software, you can purchase it online or you can use Panda Software’ s free Active Scan that will scan your computer and report on any 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. If the severity of the virus is very high, your computer may be at risk. Look up the virus at one of the antivirus manufacturers’ websites. This will help you further protect your computer.
How do you know if your computer is infected?
You can_______________________of your computer for viruses with a software program.
选项
答案scan the system
解析 根据题干中的关键词how do you know和答句中的提示词viruses with a software program锁定信息在第三段第一、二句Then, you may think you have a virus，but how do you really tell? You scan your system for viruses with a software program，据此可获知答案。
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