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题目内容
（国家开放大学理工英语1）
5. The passage is mainly about 回答
.
A. a better way to download an Ebook
B. a new kind of book - the Ebooks
C. the new version of Ebooks
.
A. a better way to download an Ebook
B. a new kind of book - the Ebooks
C. the new version of Ebooks
参考答案