能够复制自身的计算机病毒是（）。A.宏病毒 B.CIH病毒 C.蠕虫_爱下问搜题

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问题单项选择题

能够复制自身的计算机病毒是（）。

A.宏病毒

B.CIH病毒

C.蠕虫病毒

D.木马病毒

答案

参考答案：C

单项选择题

某种网络安全威胁是通过非法手段取得对数据的使用权，并对数据进行恶意地添加和修改。这种安全威胁属于______。

A．窃听数据

B．破坏数据完整性

C．拒绝服务

D．物理安全威胁

完形填空

Coming home from school, I was filled with excitement. But I was into stillness by what I saw. Mother, seated at the end of the sofa, , with the second-hand green typewriter on the table. She told me she couldn’t type fast and she was out of work. My shock at finding mother in tears was a perfect of how I understood the pressures on her. Sitting beside her on the sofa, I began very to understand. I could her pain and the tension (压力) of the strong feeling that were interrupted by my arrival. Suddenly, something inside me . I reached out and put my arms around her. She broke then. She put her face my shoulder and sobbed. I held her and didn’t try to talk. I knew I was doing what I should, and that was enough. At that moment, mother’s back with feelings, I understood for the first time her being so easy to . She was still my mother, she was something : a person like me, capable of fear and and failure. I could feel her pain as she must have felt mine on a thousand occasions when I sought in her arms.
A week later mother took a job at half the salary the radio station . “It’s a job I can do, though.” She said . But the evening practice on the old green typewriter continued. I had a very feeling now when I heard her tapping away across the paper at night. I knew there was something more going on in there than a woman learning to .

D．explanation

A．putting away

B．stopping from

D．holding back

D．thoughtfully

C．contributed