全文预览

电子书与纸质书的对比

上传者:苏堤漫步 |  格式:ppt  |  页数:19 |  大小:4578KB

文档介绍
ngРE-bookРPaper bookРSave much time and energyРSpend time running to bookstores or librariesР4РРInformation lossРIt’s easy to lose information.РIt’s hard to lose information.РE-bookРPaper bookР5РРE-booksРPaper booksРStoring information in the silicon chipsРspace-consumingРSpace takingР6РРE-booksРPaper booksРRequiring special devices or personal computersРConvenience in readingРbulky ??heavyР7РРE-booksРPaper booksРDownload e-books is cheap?buy a PC and network are very expensiveРCosting some money if you buy booksРPriceР8РРDoing harm to eyes and skins?Causing eyestrainРThey don't normally cause significant eye-strain. ?They won’t cause any harm to your skin.РE-booksРPaper booksРHealth damageР9РРPower-wastingРNot being environmentally friendly?Cutting down treesРEnvironmental protectionР10

收藏

分享

举报
下载此文档