单项选择题

下列属于存储媒体的是（）。

A.视频
B.文本
C.动画
D.光盘

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单项选择题

基带传输系统主要应用于无线通信系统中。
A、正确
B、错误

According to the passage, which of the following statement is right?
A、A reader should find some mistakes when he is reading.
B、The more difficult a book is, the more you can get from it.
C、To read something is easier than to watch something.
D、One should be in the same track with the writer when he is reading.

答案： One should be in the same track with the writer when he is r...