【单选题】【消耗次数：1】
下面关于计算机病毒说法正确的是（ ）。
①
正版的操作系统也会受计算机病毒的攻击
②
防火墙主要的任务就是防止病毒感染自己的计算机系统
③
防病毒软件无法查出压缩文件中的病毒
④
一台计算机只要杀死了某种病毒，则该计算机不会再感染这种病毒
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相关题目
【单选题】
下面关于计算机病毒说法正确的是__________。
①
正版的操作系统也会受计算机病毒的攻击
②
网络病毒传播的唯一方式是通过发送邮件来传播
③
防病毒软件无法查出压缩文件中的病毒
④
一台计算机只要杀死了某种病毒，则该计算机不会再感染这种病毒
【单选题】
下面关于计算机病毒说法错误的是__________。
①
新买的计算机也会受到计算机病毒的攻击
②
防病毒软件不会检查出压缩文件内部的病毒
③
任何防病毒软件都不会查出和杀掉所有的病毒
④
任何计算机病毒都有标志码
【单选题】
计算机预防病毒感染有效的措施是（ ）。
①
定期对计算机重新安装系统
②
给计算机安装防病毒的软件，并常更新
③
不要把 U 盘和有病毒的 U 盘放在一起
④
不准往计算机中拷贝软件
随机题目
【单选题】
I was stunned by the news, and my initial __________ was anger.
①
impression
②
reaction
③
comment
④
other
【单选题】
Do you mind telling me where you’re from?
①
Certainly. I’m from London
②
Sure. I was born in London
③
Not really, you can do it
④
Certainly not. I’m from London
【单选题】
It was not until she had arrived home __________ remembered her appointment with the doctor.
①
when she
②
that she
③
and she
④
she
【单选题】
If only he __________ what I tell him, but he won’t.
①
had done
②
would do
③
would have done
④
has done
【单选题】
I am very grateful to you for what you’ve given me and __________ you have done for me.
①
which
②
that
③
all what
④
all that
【单选题】
Did Tom tell you to water the flowers?
①
No. And so did I
②
No. And neither did I
③
He did And so I did
④
He did And so do I
【单选题】
I __________ an interesting news item in yesterday’s Times.
①
came across
②
came up
③
came to
④
came over
【单选题】
Many Americans worry about leisure and hurry from one activity to the next, __________ little time to stop and think.
①
leave
②
leaving
③
left
④
to leave
【单选题】
Sorry to interrupt, but can you give me another copy of the handout?
①
No, of course not
②
Certainly
③
I’m sorry to hear that
④
By no means, but it’s impossible