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
The computer virus is an outcome of the computer overgrowth in the 1980s. The cause of this term is the likeness between the bio
The computer virus is an outcome of the computer overgrowth in the 1980s. The cause of this term is the likeness between the bio
admin
2010-09-25
46
问题
The computer virus is an outcome of the computer overgrowth in
the 1980s. The cause of this term is the likeness between the biological
virus and the evil program infected with computers. The origin of this
term came an American science fiction "The Adolescence of P-1" written 【S1】______
by Thomas J. Ryan published in 1977. Human viruses invade a living
cell and turn them into a factory for manufacturing viruses. 【S2】______
Therefore, computer viruses are small programs. They replicate by attaching 【S3】______
a copy of themselves to another program.
Once attached by host program, the viruses then look for other programs 【S4】______
to" infect". In this way, the virus can spread quickly throughout a
hard disk or an entire organization. At some points, the situation will be 【S5】______
totally determined by how the virus was programmed. The timing of the
attack can be linked to a number of situations, included a certain time 【S6】______
or date, the presence of a particular file, the security privilege level of
the user and the number of times a file is used. So-called" benign" viruses
might simply display a message, like the one that infected IBM’s
main computer system last Christmas with a season’s greeting. Malignant
viruses are designed to damage the system. The attack is to wiping 【S7】______
out data, to delete files or to format the hard disk.
There are two main types of viruses: shell and intrusive system.
Shell viruses wrap themselves around a host program and don’t modify
the original program. Shell programs are easy to write, that is why about 【S8】______
half of viruses are of this type. Intrusive viruses invade an existing program
and actual insert a portion of themselves into the host program. 【S9】______
Intrusive viruses are hard to write and very difficult to remove with 【S10】______
damaging the host file.
【S5】
选项
答案
points→point
解析
搭配错误。at some point为固定词组,意为“在某个时候”,point应为单数形式。
转载请注明原文地址:https://kaotiyun.com/show/Ptz7777K
0
大学英语六级
相关试题推荐
ScientistssaythewarmingoftheEarth’satmospherehasbeguntoaffectplantandanimallifearoundtheworld.Scientistsfrom
A、£5.B、£30.C、£50.D、£55.B本题属于较难的数字题,要经过运算之后才能得山结论。综合男士所说的Ifyoujoinnowyoucanhavethefirstmonthfree和Themembershipfee
Face-to-facecontactisbynomeanstheonlyformofcommunicationandduringthelasttwohundredyearstheartofmasscommuni
A、Becausetheirwivesdidn’tlikeit.B、Becauseitwasn’tgoodforcooking.C、Becausetheirwivesdidn’tliketheflavor.D、All
A、Returnandborrowbooksinthelibrary.B、Gotoworkinthelibrary.C、Returnbookstothelibraryandbuytwobooksforhism
Whensomebodycalls,firstofall,thehostwouldofferhimacigaretteandacupoftea.Inthecountryside,【B1】______,oldme
Whensomebodycalls,firstofall,thehostwouldofferhimacigaretteandacupoftea.Inthecountryside,【B1】______,oldme
A、Hewondersifhe’llhaveenoughtimetodothejob.B、Heisafraidhedoesn’tknowenoughaboutthejob.C、Hefearsthatthej
Thetrafficpolice______(正在搜索证据以证明被告有错,可结果却是徒劳).
Ithasbeenannouncedthat_______________________(新的研究结果使癌症这一难题日渐明朗).
随机试题
投资银行的基本职能。
在诗歌中,将同一个音或类似的音予以有规则的反复排列,这种现象称为()
普氏立克次体感染导致哪种疾病
慢性龋的临床表现如下,除外
A.解离度B.分配系数C.立体构型D.空间构象E.电子云密度分布造成手性药物对映体之间活性差异影响的原因是()
2008年何某与东方朔签订买卖合同,何某交付货物后,东方朔一直拖欠货款,2012年何某起诉东方朔索要货款,法院对此案的下列处理方案中正确的是:()
A公司中标某市城区高架路工程第二标段。本工程包括高架桥梁、地面辅道及其他附属工程:工程采用工程量清单计价,并在清单中列出了措施项目;双方签订了建设工程施工合同,其中约定工程款支付方式为按月计量支付,并约定发生争议时向工程所在地仲裁委员会申请仲裁。对清单中
在集装箱运输中,能够实现“门到门”运输的集装箱货物交接方式是()。
某企业打算在某地建一分厂,委托一咨询公司进行可行性研究。根据题意,回答下列问题:在财务评价中,将求出的全部投资或自有资金的财务内部收益率(FIRR)与行业的基准收益率或设定的折现率(ic)比较,当()时,即认为其盈利能力已满足最低要求,在财务
下面关于E-R图转换成关系模式时的说法中,哪一个是不准确的?
最新回复
(
0
)