词语填空 (共10小题，计10分)

词语填空 (共10小题，计10分)
用方框中所给单词的适当形式填空，使短文通顺、正确、连贯 (每个单词限用一次)。

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Twenty-First Century Books
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   1   paper books are now making electronic books (ebooks). Most ebooks are the same as paper books,   2   people download a file into a reading device rather than   3   the paper book. This way they can   4   many books.
Books companies are adding special features   5   some ebooks. 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   6  , but they are also much more powerful. They can store much more information, so writers and book companies can do more with   7  ebooks. They do not want to just add files to   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   9   change the story.
Readers already have a lot of books to choose from. If they can change the way stories end, they will have more   10  !