填空题

“冲击波”病毒属于（）类型的病毒，它利用Windows操作系统的（）漏洞进行快速传播。

【参考答案】

蠕虫；RPC

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单项选择题

According to the report，（）

A.many short sleepers need less sleep by nature
B.many short sleepers are obliged to reduce their nightly sleep time because they are busy with their work
C.long sleepers sleep a longer period of time during the day
D.many long sleepers preserve their sleeping habit formed during their childhood