首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
专升本
Recently, several thousand computers in the United States were attacked by a virus. The computers were slowed or shut down. But
Recently, several thousand computers in the United States were attacked by a virus. The computers were slowed or shut down. But
admin
2011-03-26
69
问题
Recently, several thousand computers in the United States were attacked by a virus. The computers were slowed or shut down. But no information was lost. A computer virus is similar to a biological virus--an organism (生物体) that can harm the human body. A computer virus is a series of electronic commands that can harm a computer or the information in the computer. It infects the device (设备) secretly. It tells the computer to do something the computer’s owner does not want it to do. For example, a virus could enter a bank’s computer system. It might tell the system to destroy all information about money belonging to everyone with the first name United States several months ago. The virus was created by a university student studying computer science. The computers affected by the virus were in major universities, government agencies (政府机关) and private (私人) companies. They were part of a United commands in a computer at his school. The computer sent the commands to other computers through the linked telephone lines.
The virus told each computer to make many copies of itself. Within a few minutes, all the computers’ power was being used to make copies of the virus. The computer could do no other work. It finally slowed down greatly, or simply stopped working. Computer experts spent many days trying to destroy the virus in the computer system.
The experts agree the virus could have been much worse. They say it could have sent orders to destroy huge amounts of electronic information.
Many experts believe, the recent computer virus showed the need for better computer security (安全). But that is a problem. The affected system provides a free exchange (交换) of ideas and information among universities, private companies and government offices. Increasing security too much would destroy this exchange. It would slow progress on many important research projects.
Which of the following statements is true?
选项
A、Many computers were attacked by a virus in the U. S.
B、Many computers attacked by a virus in the U.S. lost their information.
C、A computer virus can harm human body.
D、A computer virus can help the computer owner do many things.
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/LavC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
阅读陆游《关山月》(和戎诏下十五年),然后回答下列小题。和戎诏下十五年,将军不战空临边。朱门沉沉按歌舞,厩马肥死弓断弦。戍楼刁斗催落月,三十从军今白发。笛里谁知壮士心?沙头空照征人骨。中原干戈古亦闻,岂有逆胡传子孙?遗民忍死望恢复,几处今宵垂泪
阅读《世说新语》中的一段文字,然后回答下列小题。石崇与王恺争豪,并穷绮丽以饰舆服。武帝,恺之甥也,每助恺。尝以一珊瑚树高二尺许赐恺,枝柯扶疏,世罕其比。恺以示崇。崇视讫,以铁如意击之,应手而碎。恺既惋惜,又以为疾己之宝,声色甚厉。崇曰:“不足恨,
Forthispart,youaresupposedtowritealetterinabout100-120wordsbasedonthefollowingsituation.Remembertowriteit
KathyAllenhasbreastcancer.Sheneedstoknowwhichkindofmedicinetotake.Doctorswanttoknowthemedicalhistoryof
Ishouldhavetoldyou!You______theentirehouse.Ourcleaningladyphonedshe’scomingtomorrow.
She’soutofhospitaland(热切地想)togobacktowork.
Youwouldbe______arisktoletyourchildgotoschoolbyhimself,
OneofthegreatestkillersintheWesternworldisheartdisease.Thedeathrate(率)fromthediseasehasbeenincreasingatan
Nickwastiredoflife.Everydaywasexactlythesame."WhatIneedisalittleadventure!"Nickthoughtashewaitedatth
Nickwastiredoflife.Everydaywasexactlythesame."WhatIneedisalittleadventure!"Nickthoughtashewaitedatth
随机试题
患者,男,53岁。形体肥胖,胸闷胸痛反复发作1周,含服硝酸甘油1~2分钟可缓解。痰多色白,纳呆,脘胀,形寒肢冷,舌淡苔白滑,脉弦滑。其治法是
导致脉压增大的疾病是
有机磷中毒时,代谢失常的神经递质是()
下列选项中,不属于产业政策核心内容中的发展高技术产业政策内容的是()
按合同约定的券种、数量取得债券质权,并在回购期间拥有债券质权,这是全国银行间市场式质押交易中()。
销项税合计为( )元。以下关于酒类消费税的表述中,正确的是( )。
()是班级工作过程的最后一个环节。
一位领导者的影响作用是整体性的。也就是说,职权影响力和个人影响力在领导过程中,总是相互联系、相互交织地发挥作用的。对领导者来说,为了实现领导,必须有一定的职位权力,才能借以推进他所负责的工作。但是,如果领导者只凭职位权力去推进工作,甚至滥用权力,以权压人,
下列文种中属于陈述性的上行公文是()。
Itisacommonthemeinmanysciencefictionstoriesthattheworldmayonedaybe______byinsects.
最新回复
(
0
)