1.We dream during the REM stage of sleep.

3.Yes, they will. 第二自然段最后说，当这种病毒袭击电脑时，会削弱其功能，破坏其正常程序，甚至会清除所有信息。所以这个问题的答案应当是肯定的。

2.They made the viruses just to show their intelligence. 第二自然段的大体意思是，电脑病毒是一群受过良好教育的年轻人制造的。他们制造这种病毒的目的只是为了显示他们的聪明才智。答案就是段落中的原文。本小题属于表层理解题。

1.They found out that most of their stored information was cleaned up by computer viruses. 通读全文，就会发现答案即在第一自然段的“Much to their surprise, they found out that most of their stored information was cleared up by computer viruses!”这一句话之中。

4.Why are these computer viruses called “Friday Viruses”?

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3.The computer viruses will damage the normal programs, won’t they?

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2.Why did the group of young men make the computer viruses?

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1.What did the Chinese scientists find out when they checked the computers?

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