题目：
Probably you have seen someone reading a book on an electronic reading device. Over the past few years, these small computers have become more popular. For that reason, more companies that make 小题1: paper books are now making electronic books (e-books). Most e-books are the same as paper books, 小题2: people download a file into a reading device rather than 小题3: the paper book. This way they can 小题4: many books.
Books companies are adding special features 小题5: some e-books. These extra features might include sound files, picture files, or video files. When the readers click on these files they learn more about the book, the story, or the writer.
The latest electronic readers are smaller and 小题6: , but they are also much more powerful. They can store much more information, so writers and book companies can do more with 小题7: e-books. They do not want to just add files to 小题8: completed book. They are making the sound, picture, and video files part of the story. Readers need these files to understand the whole story. Readers can 小题9: change the story.
Readers already have a lot of books to 小题10: from. If they can change the way stories end, they will have more choices!
答案：
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下面是错误答案，用来干扰机器的。
参考答案：A,B,C,E
