专四完形填空满分练习题

专四完形填空满分练习题

2018专四完形填空满分练习题

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The birth of computers has brought with it a new set of

opportunities for mischief and crime. Today, computers are easy

to come by and many people know how computer technology

11 . More importantly, the growing use of computer networks

can multiply the violation of security, making large numbers of

people more vulnerable than would be the case if they were

using 12 , stand-alone computers.

What's more, computer experts agree that—despite recent

widespread publicity-computer viruses are 13 one of the many

computer security problems facing the nation.

The U. S. Defense Advanced Research Project Agency has

requested that the Research Council's Science and Technology

Board 14 the security problems posed by computer technology,

see what 15 may already exist, review research efforts 16 at

avoiding security problems in the future, and evaluate existing

policies 17 to computer security. The study committee will

examine the 18 of security for a broad spectrum of users,

including the business, national security, and academic

communities, as well as the 19 public.

David. Clark, senior research scientist, Laboratory for

Computer Science, Massachusetts Institute of Technology, will

chair the 20 of experts in electronic security, net-work security,

computer law, software engineering ? and operating systems.

The committee will also include computer users from the defense

and banking industries.

A. only ons l

E. issue entally sal

I. aimed tee tes

M. relevant on ity

参考答案

II. B 12. J 13. A 14. H 15. C

16. I 17. M 18. E 19. D 20. K