By 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 b

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问题 By 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)_____ ofthe life arrives in the background。And most important,MP3 music files retain good listening  (3)_____ that  (4)______compression schemes lacked.That  (5)_____ of features makes accessing anddistributing music on the Web practical for the first time.
(5)_____
A.addition
B.combination
C.difference
D.Condition

选项 A、 
B、 
C、 
D、 

答案B

解析 如果使用MP3,600MB的音乐CD能被压缩到50MB或更小。它能流式播放(分块下载),使你一开始就能听,同时文件其余的(rest)部分在后台继续下载。尤其重要的是,MP3音乐具有较好的音质(quality),这种音质前期(earlier)压缩方案欠缺。将这些特性结合(combination)起来,使在Web上存取和发布音乐首次得以实现
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