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完形填空。
Big schoolbags have been a serious problem for students for a long time．Maybe your schoolbag is too 1 to carry, and it troubles you a lot 2 you want to find a book out to read．Now an e-textbook will 3 you．
It is said that e-textbooks are going to be 4 in Chinese middle schools．An e-text-book, in fact, is a small 5 for students．It is much 6 than a usual schoolbag and easy to carry．Though it is as small as a book, it can 7 all the materials for study．The students can read the text page by page on the 8 , take notes with the pointer(屏写笔)，or even“ 9 ”their homework to their teachers by sending e-mails．All they have to do is to press a button．
Some people say e-textbooks are good, but some say they may be 10 for the students' eyes．What do you think of it?
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新课标快乐提优暑假作业陕西旅游出版社系列答案
