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
外语
A、It is a virus that causes great damage. B、It is a virus that once infected the IBM’s computer system. C、It is a virus that car
A、It is a virus that causes great damage. B、It is a virus that once infected the IBM’s computer system. C、It is a virus that car
admin
2013-11-21
27
问题
The computer virus is an outcome of the computer overgrowth in the 1980s. The cause of the term "computer virus" is the likeness between the biological virus and the evil program infected with computers. The origin of this term came from an American science fiction "The Adolescence of P-l" written by Thomas J. Ryan, published in 1977. Human viruses invade a living cell and turn it into a factory for manufacturing viruses. However, computer viruses are small programs. They expand by attaching a copy of themselves to another program. Once attached to the host program, the viruses then look for other programs to "infect". In this way, the virus can spread quickly throughout a hard disk or an entire organization when it infects a LAN or a multiuser system. The timing of the attack can be linked to a number of situations, including a certain time or date, the presence of a particular file, the security level of the user, and the number of times a file is used. Likewise, the mode of attack varies. So called "benign" or the harmless viruses might simply display a message, like the one that infected IBM’s main computer system last Christmas with a season’s greeting. Malignant or the harmful viruses are designed to damage the system. The attack is to wipe out data, to delete files, or to format the hard disk.
Questions 22 to 25 are based on the passage you have just heard.
22. How did the name of "computer virus" come into being?
23. What is the way that the computer viruses infect the computer system?
24. What is a "benign" virus?
25. What can a "malignant" virus do to your computer?
选项
A、It is a virus that causes great damage.
B、It is a virus that once infected the IBM’s computer system.
C、It is a virus that carries a Christmas greeting.
D、It is a virus that causes no harm to the computer systems.
答案
D
解析
细节题。题目中的benign是关键词,所谓“良性”病毒就是不会造成危害的病毒。故选D。
转载请注明原文地址:https://kaotiyun.com/show/njS7777K
0
大学英语四级
相关试题推荐
Choosingwhattodoinlifeisoneofthehardestdecisionsthatapersonhastomake.Somepeoplechoosetooearlyand【B1】_____
TheSky’sLimitAirtravelisarapidlygrowingsourceofgreenhousegases.Butitisalsoanindispensablewayoftravel.T
Whensheinterviewsteachingcandidates,principalLaurelTellerfavorstheoneswhoshowtheyhaveaheartforchildren,notju
Whensheinterviewsteachingcandidates,principalLaurelTellerfavorstheoneswhoshowtheyhaveaheartforchildren,notju
A、Tomakeajourney.B、Toattendameeting.C、Topurchasesomething.D、Tomeethiswife.BWhydoesthescientisttakealongtra
A、WaitforMr.White’scall.B、Makeanothercalllater.C、Paythemanageravisit.D、Speakinaloudervoice.B题目询问女士建议男士于什么。关键是
A、Theamountofvocabulary.B、Abilityofreadingandcomprehension.C、Englishspeaking.D、Listeningability.B本题题干是研究人员发现了什么。文章的
A、Themanshouldseeadoctor.B、Shewillhelpthemanchangehisdiet.C、Sheunderstandswhythemanseemsunhappy.D、Thedocto
Thetermbiologicalclockis【B1】_____tothemeansbywhichlivingthings【B2】_____theiractivitypatterns,withoutany【B3】_____cu
ItAin’tEasyBeingGreenOverthesummer,IstayedatfourhotelsintheUnitedStates.Theywereallownedbydifferentco
随机试题
下列与“善养吾浩然之气”所反映的中华传统美德的基本精神一致的是()
一位住在妇产科病房的患者,手术后腹胀,哭闹着要找科主任来给她看一看。主任来后,经仔细查看,发现患者只是心理上有些问题,于是说了一些安慰她的话,患者便安静下来了,还有说有笑。有同事见了不以为然地说,这也值得林大主任来管?主任莞尔一笑,说:“难道当主任的就非得
癫痫的临床诊断大多数情况下需依据
【背景资料】某施工单位承接某二级公路H段的建设任务,其中合同段K23+400~K45+10C主要为路基土石方工程,本地区岩层构成为泥岩、砂岩互层,抗压强度20MPa左右,地表土覆盖层较薄。在招标文件中,60%挖方为石方,填方路段填料由挖方路段调运
根据土地增值税法律制度的规定,下列各项中,应当征收土地增值税的是()。
“奶粉价格一路飙涨,消费者是无辜的,但也在一定程度上促成了这个事。‘越贵越好’的心态是市场的现实折射。”在国产奶粉品牌商看来,中国这些年总有“几颗耗子屎毁了一锅汤”。因为毛利高,国内企业海外注册品牌冒充原装进口的事情______,在网上引发很多讨论。洋奶粉
A、5月B、9月C、10月D、11月D
Whatisnotthepossiblecauseforthesharpincreaseinbreastcancer?One’sinsulinleveliscontrolledby______.
Pleasespeaklouder________WecanhearMoreclearly.
Whatcourseisthestudentinterestedin?
最新回复
(
0
)