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(偽裝)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(被傳染的)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(電子數(shù)據(jù)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 本文主要講述了一種病毒對很多電腦的侵襲,以及它會造成的影響.
解答 28.B 細(xì)節(jié)題.根據(jù)文章內(nèi)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(偽裝)itself as an"important message"from a friend.成千上萬的電腦被一種病毒襲擊了,而這個病毒把自己偽裝成來自朋友的需要緊急處理的消息,使得很多人都上當(dāng)了.結(jié)合選項,故選B
29.C 細(xì)節(jié)題.根據(jù)文章內(nèi)容,The virus began to show up last Friday and spread rapidly on Monday by making computers fire off dozens of infected(被傳染的)e-mails.這個病毒使得電腦發(fā)送很多被傳染的信息給他人.結(jié)合選項,故選C
30.A細(xì)節(jié)題.根據(jù)文章內(nèi)容,Although the virus causes no serious damage to a computer,its effect was far reaching.盡管這個病毒給電腦本身不會產(chǎn)生太大的損害,但是它的影響是深遠(yuǎn)的.結(jié)合選項,故選A
31.B 細(xì)節(jié)題.根據(jù)文章內(nèi)容,Once the user opens that file,the virus digs into the user's address book and sends infected documents to the first 50addresses.一旦用戶打開了帶有病毒的文件,那個病毒就會傳播到用戶的其它文件里.結(jié)合選項,故選B
點評 本文是一個科技類閱讀,題目涉及多道細(xì)節(jié)理解題,做題時結(jié)合原文和題目有針對性的找出相關(guān)語句進(jìn)行仔細(xì)分析,結(jié)合選項選出正確答案.推理判斷題也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確答案,切忌胡亂猜測,一定要做到有理有據(jù).