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?
Mary and Donald Smith lived in the same building．Donald 1 a toy company．One day Donald gave Mary．the 4-year-old girl．a new toy．She played with it and said．"This is fun! A few weeks later Donald gave her 2 toy．She played with it and then said．"I'm not 3 in this toy．It doesn't work．" For years Donald gave Mary new toys．and she gave him very good 4 about the toys．
When Mary was 13 years old．Donald showed her a new ball．Mary wanted to 5 the ball with small stones to make it 6 ．The company made this change．Mary's idea was a great success! The company sold thousands of the balls．
That Christmas．Donald gave Mary an 7 gift．He made her vice-president(副总裁)of the toy company．She made ＄200,000 a year．Her job was lo see 8 the new toys were fun．She worked 9 three or four hours a day at her job, then she had to do her homework．
Today Mary works at a college．The little vice-president with bright ideas helps students think about their 10 ．
