InthelastfewyearsthepopularityofeBookshasexploded.Thead...
问题详情：InthelastfewyearsthepopularityofeBookshasexploded.Theadvantagesareclear:Youcancarryasmanybookswithyouasyouwant.Youcansimplydownloadeven7booksyoulikeandinstantlystartreadinginsteadofhavingtowai...