By using MP3，a 600M-byte music CD can be (70) to 50M bytes or less.It can be streamed(downloaded in chunks)so that you can begin listening to the opening bars while the (71) of the file arrives in the background．And，most important，MP3 music files retain good listening (72) that (73) compression schemes lacked．That (74) of features makes accessing and distributing music on the Web practical for the first time.(70)

A．pressed

B．compressed

C．press

D．compress(71)

A．past

B．other

C．rest

D．host(72)

A．voice

B．mass

C．quantity

D．quality(73)

A．earlier

B．front

C．backward

D．later(74)

A．add

B．combination

C．difference

D．condition

[单选题]B．y using MP3, a 600M-byte music CD can be (1) to 50M bytes or less. It can be streamed (downloaded in chunks) so that you can begin listening to the opening bars while the (2) of the life arrives in the background. And, most important, MP3 music fil

[单选题]B．y using MP3, a 600M-byte music CD can be(70)to 50M bytes or less. It can be streamed(downloaded in chunks)so that you can begin listening to the opening bars while the(71)of the file arrives in the background. And, most important, MP3 music files r

[单选题]B．y using(26), a 600M -byte music CD can be compressed to 50M bytes or less. It can be streamed(downloaded in chunks) so that you can begin listening to the opening bars while the(27)of the file arrives in the background. And, most important, the mus

[单选题]MP3（）。A . 为具有最高的压缩比的图形文件的压缩标准B . 采用的是无损压缩技术C . 是目前很流行的音频文件压缩格式D . 为具有最高的压缩比的视频文件的压缩标准

[单选题]MP3（）A .是具有最高的压缩比的图形文件的压缩标准B .采用的是无损压缩技术C .是目前很流行的音乐文件压缩格式D .为具有最高的压缩比的视频文件的压缩标准

[名词解释] MP3

[单选题]MP3（）。A.为具有最高的压缩比的图形文件的压缩标准B.采用的是无损压缩技术C.是目前很流行的音频文件压缩格式D.为具有最高的压缩比的视频文件的压缩

[名词解释] 真假MP3

[单选题]一张CD数据光盘上，可存放约（）首MP3歌曲。A . 10B . 50C . 100D . 500

[单选题]MP3属于下面（）A . MPEG-4B . MPEG-3C . MPEG-2D . MPEG-1