Have you ever heard of e-books? E-books are electronic books. They are no （big）than a common book, with a screen on which you can read.
If you don't know the e-book works, the following will tell you the answer.
First, you visit websites on a computer and choose books you want （free）. There are thousands of books provided by different websites on Internet. Then download（下载） the books you like into your e-book. About 10 books （save）at a time. Now you can just sit back reading and enjoy yourself.
Compared with common books, e-books have many advantages. First of all, e-books save space. You can put least 10 books into an e-book and then carry it everywhere. Then you can download new reading materials into （you）e-book as many times as you like. With the （develop）of e-book technology, probably an e-library will appear. Then you just take your e-book there to download what you want （read）. You will never need to worry about whether your books are overdue（过期） not. How fantastic our reading will be!
