阅读理解.
Email systems at thousands of companies' offices around the world were attacked by
a virus (病毒)called "Mellissa" that disguises itself as "an important message" from a friend.
"Even though there was a weekend warning, more than 50,000 companies at about 100
places around the world have been attacked by the virus," computer experts said on Monday.
The virus began to show up last Friday and spread rapidly the next first workday by
making computers send off dozens of email containing the virus. Although the virus had no
long-lasting damage to a computer, its effects were far-reaching.
Michael Vatis, a senior US official said military and government computers were
damaged, along with thousands of the other instructions' systems.
The body of email message says "Here is what you ask for…" Once the user opens it,
the virus digs into the user's address book and sends out messages to the first 50 addresses.
The reason the virus spreads so rapidly is that you're getting it from people you know and
trust. So anyone who gets an unexpected email with the "Important Message" subject line
is advised not to open it and to delete (删除) it immediately.
1. From the passage we know that the virus attacked thousands of computers on ._____
A. Monday
B. Saturday
C. Friday
D. the first day of the month
2. The virus spreads rapidly because. ______.
A. it makes computers work without stop
B. it carries words "Important Message"
C. it sends out messages to dozens of people who know and trust the sender at one time
D. it attacks military and government offices
3. The underlined word "disguises" most probably means" ".
A. dresses
B. covers up
C. paints
D. notices
4. Which of the following is the best title for this passage?
A. Stop Using Your Computer
B. "Important Message" is a Virus
C. Message from Friends Contains Virus
D. Virus Strikes Hard and Fast
