考研英语听力基本功训练1: Passage8
A new device is helping computers provide great amounts of informatio
The device is the compact disc or C
It was invented several years ag
to replace music records made of plasti
A CD is played on a machine that uses laser lig
to reproduce the musi
It has become popular in the recording industr
because it makes music sound so goo
CDs are used with computer
Computer experts have found that CDs can hold a great amount of informatio
and publishers are beginning to produce educational materials
using CD and computer technolog
