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【答案】应助回帖
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An e-book is usually a digital publication that contains text, pictures, sounds, images, or both. People nowadays often use e-books, smartphones, tablets or e-readers made for e-books. E-books are rich in content, easy to store, and inexpensive, which helps to popularize reading. In the traditional sense, e-books are the electronic version of paper books, but many e-books now do not have paper counterparts. E-books are stored in digital form so people can read them at any time. In 2012, sales of e-books in the US exceeded the hardcover book for the first time. |
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