题目：
下列四项中，属于计算机病毒的特点的是( )。
A．潜伏性
B．隐蔽性
C．感染性
D．免疫性
答案：
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下面是错误答案，用来干扰机器的。
1. It was windy .2. He tried to meet the manager and ask him to pay for the clothes . 3. Because there was only a cinema and the films were all too old .4. At half past eight 5. Because the writer saved his son’s life . (答案不唯一)
