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 can cause no damages at all. B、It can cause damages to the computer systems. C、It can copy your files in computers. D、It ca
A、It can cause no damages at all. B、It can cause damages to the computer systems. C、It can copy your files in computers. D、It ca
admin
2013-11-21
77
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 can cause no damages at all.
B、It can cause damages to the computer systems.
C、It can copy your files in computers.
D、It can format your hard drive.
答案
B
解析
细节题。文章在最后提到恶性病毒能够破坏电脑系统。
转载请注明原文地址:https://kaotiyun.com/show/6jS7777K
0
大学英语四级
相关试题推荐
A、Threegroupsoflearners.B、TheimportanceofbusinessEnglish.C、EnglishforSpecificPurposes.D、FeaturesofEnglishfordif
A、ToBeijingforaclassreunion.B、ToBeijingonvacation.C、ToBeijingonbusiness.D、ToBeijingtovisithisrelatives.A
Asaphysicianwhotravelsquitealot,Ispendalotoftimeonplaneslisteningforthatdreaded"Isthereadoctoronboard?"
A、Toobservepeople’sattitudetowardsstrangers.B、Toseehowpeoplegetalongwiththeirfriends.C、Totestpeople’sbehavior
Advertisingisawayofbringing【B1】______tothepublicforthepurposeofsellingaproduct,aservice,anidea,oran【B2】_____
A、Shedoesn’tagreewiththeman.B、Themanneedn’tcareMark’swords.C、Shealwayslooksateverythinginapositiveway.D、The
A、Buyingacarfromanadvertisement.B、Puttinganadvertisementinnewspaper.C、Dealingwithasecond-handcar.D、Takinginan
A、Namesomefamousadvertisersintheworld.B、Tellpeoplesomeindustryrevolutionstories.C、Showsomeadvertisementsduringt
Forthefirsttimein25yearstheFoodandDrugAdministration(FDA)isbringinginnewhealthwarningsforcigarettes.Thenine
A、Theyareafraidoffacingtheconflicts.B、Theymeetsometroubleinwork.C、Theyfeelhungrywhentheyareangry.D、Theydon’
随机试题
A.鳞状上皮细胞癌B.肺泡细胞癌C.腺癌D.小细胞未分化癌E.大细胞未分化癌内分泌紊乱综合征多见于
男性,53岁,3年前开始有心慌,心悸,气促,近日症状加重伴乏力,双下肢水肿。查体:血压110/80mmHg,心界向左下扩大,心率115次/分,心房颤动,A2SM2/6反流样杂音,双肺呼吸音稍粗,无明显干、湿性啰音,颈静脉怒张,肝肋下2cm,双下肢水肿(+
关于内痔硬化剂注射治疗的部位,下列哪项是正确的
血管神经性水肿少发或不发的部位是()
患者,男性,54岁。患肝炎后肝硬化10年,近l周来病情加重,腹腔积液量增加,腹胀明显,并出现呼吸困难。为减少腹腔积液,下列最佳的治疗药物是
生活和工作中难免会出现负面情绪,当你出现负面情绪的时候,通常你会怎么做?
一、注意事项1.申论考试,是对分析驾驭材料能力、提出和解决问题能力、文字表达能力的测试。2.作答参考时限:阅读资料40分钟,作答110分钟。3.仔细阅读给定的材料,然后按申论要求依次作答,答案书写在指定的位置。二、给定资料
我国《刑法》规定的刑罚有()
在长度为n的线性表中顺序查找元素x时,查找成功的平均查找长度为【】。
Weareenteringaperiodinwhichrapidpopulationgrowth,thepresenceofdeadlyweapons,anddwindlingresourceswillbringin
最新回复
(
0
)