题目内容
15.E-mail systems at thousands of companies and government offices around the world were attacked by a virus(病毒)called"Melissa"that disguises(伪装)itself as an"important message"from a friend.In spite of a weekend of warnings,more than 50 000 computers at about 100places around the world have been attacked by the virus,computer security experts said on Monday.The virus began to show up last Friday and spread rapidly on Monday by making computers fire off dozens of infected(被传染的)e-mails.Although the virus causes no serious damage to a computer,its effect was far reaching.
To make matters worse,a similar virus called"Papa"was discovered on Monday.Papa is programmed to send out even more infected e-mails than Melissa.
The Melissa virus comes in the form of an e-mail,usually containing the subject line"Important Message".It appears to be from a friend.The body of the e-mail message says,"Here is that document you asked for…,don't show it to anyone else."Attached(附)to the message is a document file.
Once the user opens that file,the virus digs into the user's address book and sends infected documents to the first 50addresses.E-mails from the Papa virus include an attached spreadsheet(电子数据文件)file.When the user opens that file,the virus sends 60infected e-mails.
The reason why this is spreading so fast is that you are getting it from people you know.You should never open documents or attachments from people you don't know.People who get an unexpected e-mail with the"important message"subject line should delete it immediately and not open the message.
28.Thousands of computers were attacked by the Melissa virusB.
A.covered with an important message
B.under cover of a message needing immediate attention
C.under the clothes of an important e-mail
D.with a beautiful coat
29.The Melissa virus made a computerC.
A.receive tens of bad e-mails
B.fire at many sick e-mail messages
C.send out scores of infected messages
D.burn with a fire because of many infected e-mails
30.After the attack by the Melissa virus a computerA.
A.was slightly damaged
B.became entirely out of order
C.could not send out any e-mail any longer
D.would have to be thrown away
31.If you opened an infected file by Melissa virus,the virus wouldB.
A.damage the user's address book at once
B.soon spread through the user's list of address
C.let the first 50addresses go out of the computer
D.change the user's address book in the computer.
分析 本文主要讲述了一种病毒对很多电脑的侵袭,以及它会造成的影响.
解答 28.B 细节题.根据文章内容,E-mail systems at thousands of companies and government offices around the world were attacked by a virus(病毒)called"Melissa"that disguises(伪装)itself as an"important message"from a friend.成千上万的电脑被一种病毒袭击了,而这个病毒把自己伪装成来自朋友的需要紧急处理的消息,使得很多人都上当了.结合选项,故选B
29.C 细节题.根据文章内容,The virus began to show up last Friday and spread rapidly on Monday by making computers fire off dozens of infected(被传染的)e-mails.这个病毒使得电脑发送很多被传染的信息给他人.结合选项,故选C
30.A细节题.根据文章内容,Although the virus causes no serious damage to a computer,its effect was far reaching.尽管这个病毒给电脑本身不会产生太大的损害,但是它的影响是深远的.结合选项,故选A
31.B 细节题.根据文章内容,Once the user opens that file,the virus digs into the user's address book and sends infected documents to the first 50addresses.一旦用户打开了带有病毒的文件,那个病毒就会传播到用户的其它文件里.结合选项,故选B
点评 本文是一个科技类阅读,题目涉及多道细节理解题,做题时结合原文和题目有针对性的找出相关语句进行仔细分析,结合选项选出正确答案.推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案,切忌胡乱猜测,一定要做到有理有据.
A. | shouldn't | B. | couldn't | C. | mustn't | D. | may not |