2. 外语
  3. Many people throughout the world are worried about their computers. They fear the machines have been【B1】______by a virus. A viru

Many people throughout the world are worried about their computers. They fear the machines have been【B1】______by a virus. A viru

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问题     Many people throughout the world are worried about their computers. They fear the machines have been【B1】______by a virus. A virus is a program that could destroy all the information the computers contain. It can remain【B2】______in a computer for a long time and then without warning it can destroy. It is【B3】______to a virus in the body that does not immediately cause disease.
    Nobody knows who created the【B4】______computer program, but it is known that the virus【B5】______from computer to computer through the【B6】______of programs that secretly carry it. If the virus becomes active, it could do a lot of damage. For example, it could cause companies or hospitals to lose all of their important【B7】______. Some experts have tested the virus and they say it will become active only if the computer is turned on when the computer’s clock【B8】______March 6th.【B9】______.
    Computer companies are also selling special programs that can find viruses and deactivate them.【B10】______.Then no information will be lost if the computer is affected by a virus. People found guilty of spreading viruses may be forced to pay large amounts of money and they could be sent to prison.【B11】______.
【B10】
选项
答案But experts say the best protection is to always make copies of everything kept on the computer.
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