UNIT 3 Match the following words with their Chineseequivalence.
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UNIT 5 Match the following words with their Chineseequivalence.
UNIT 6 Match the following words with their Chineseequivalence.
UNIT 7 Match the following words with their Chineseequivalence.
下面叙述错误的是()。
A. 计算机病毒是一个文件
B. 计算机病毒是一段程序
C. 计算机病毒没有免疫的特征
D. 计算机病毒可以变异
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