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 be

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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) 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.

选项 A、addition
B、combination
C、difference
D、condition

答案B

解析译文的含义是：利用MP3技术，600MB的音乐CD可以((1))50MB甚至更少。它可以流式传输(分块下载)，这样，在听到开始部分音乐的同时，文件的((2))在后台继续传输。而且，更为重要的是，尽管其(4)压缩方案有些欠缺，但它的((3))良好。这些特点((5))，使得在网页上访问和发布音乐第一次得以实现。

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