Do you prefer ebook rather than the general book?

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Nowadays,because of the technics of internet,we can find any information in the internet. so it's easy to get ebook every where. also the ebook can be read in the mobile phone,mp3,and the other instruments. when we go out for a trip or holidays,it's very convenient to take and read ebooks. so ebook is very popular and useful. i often collect the useful ebook for the relax,also some very important data can be put into the ebook, i can look it up very easily. but the general book, i also sometimes read it, but just for some special time, for example i can't go to internet. or i just want to read it very relax. how do you think about it?