Question

　　The arrival of computers has brought with it a new set of opportunities for trouble and crime. Today , computers are easy to come by and many people know how computer technology works. More importantly, the growing use of computer networks can increase a gap of security, making larger numbers of people more vulnerable （易受攻击的） than would be the case if they were using single , stand-alone computers.

　　What's more , computer experts agree thatdespite recent widespread publicitycomputer viruses （病毒） are only one of many computer security problems facing the nation.

　　The US Defense Advanced Research Project Agency has requested that the Research Council's Computer Science and Technology Board evaluate （评估） the security problems caused by computer technology, see what solutions （解决办法） may already exist, review research efforts aimed at avoiding security problems in the future, and evaluate existing policies connected with computer security. The study group will examine the problem of security for a broad sepctrum of users, including the business, national security, and academic communities, as well as the general public.

　　David D．Clark , senior research scientist , Laboratory for Computer Science , Massachusetts Institute of Technology , will chair the group of experts in electronic security , network security , computer law , software engineering , cryptography , and operating systems. The group will also include computer users from the defense and banking industries.

　　The study is expected to be completed by late 2000.

1．It can be inferred that to use single , stand-alone computers would ________.

[　　]

A．be easily harmed

B．not be well protected

C．avoid injury and crime

D．be easy and controllable

2．Although computer viruses are well known to the public , experts insist that ________.

[　　]

A．many other kinds of computer security problems do exist

B．computer viruses are the only problem facing the computer networks

C．computers are easy to come by

D．the growing use of computer networks can increase a gap of security

3．The aim of the Research Council's Computer Science and Technology Board is to ________.

[　　]

A．evaluate existing policies concerned with computer security

B．consider and judge research efforts aimed at keeping away from security problems in the future

C．evaluate the security problems put forward by computer technology

D．all of the above

4．The world “spectrum” in Paragraph 3 means “________”.

[　　]

A．area

B．limits

C．use

D．spreading

5．The best title for the passage is ________.

[　　]

A．Computer Viruses

B．Computer Networks

C．Computer Users

D．Computer Security

Answer 1

答案：C;A;D;B;D
解析：