题目内容：
根据下列题干，回答题：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）____ of the file 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 and distributing music on the Web practical for the first time.
请选择（1）处最佳答案
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