40.A graphics features a pressure-sensitive surface and pen for free-hand drawing. ( )

A. 　tablet

B. 　laptop

C. 　PDA

D. 　PC

135. software is popular for converting music
from CDs into a digital format that can be stored on a computer hard disk.

A. 　MP3

B. 　WAV

C. 　SP3

D. 　SAV

12.Most antivirus software runs . ( )

A. 　continuously even if your computer is turned off

B. 　continuously whenever your computer is turned on

C. 　on scheduled dates

D. 　only when you choose to run it

84.Each connection point on a network is referred to as a . ( )

A. 　router

B. 　node

C. 　client

D. 　server

87.{ messaging is a form of quick communication in which a message is typed, sent to one or more people, and received instantly. ( )

A. 　Internet

B. 　Instant

C. 　IP

D. 　Chat

28.Some displays can be classified as both input and output devices because they include a touch-sensitive screen that accepts input. ( )

A. 正确

B. 错误

49. Luminance is usually expressed in light per square meter, with higher numbers indicating a brighter display.

A. 正确

B. 错误

26.File shrinks the size of a file so it requires less storage space. ( )

A. 　defragmenting

B. 　synthesizing

C. 　scanning

D. 　compression

120.Screen brightness can be measured as ( )

A. 　luminance

B. 　contrast ratio

C. 　either a.or b.

D. 　neither a. nor b.

160._is an established technology for exchanging files, particularly those that are a bit too large to as e-mail attachments.

A. 　 HTML

B. 　 FTP

C. 　 HTTP

D. 　 TCP/IP