Big schoolbags have been a big problem for students for a long time. Maybe your schoolbag is too 31 to carry, and it troubles you a lot 32 you want to find out a book to read. Now e -textbooks will 33 you. It is said that many Chinese middle schools are going to use e - textbooks. An e - textbook, in fact, is a small 34 for students. It is much lighter than a usual schoolbag and 35 to carry. Though it is as 36 as a book, it can hold (容纳) everything for study. The students can read the text page by page on the 37 , take notes 38 the pointer (屏写笔) ,or even 'hand in' their 39 to their teachers by sending e - mails. All they have to do is to press a button ( 按开关). Some people say e- textbooks are good, but some say they may be 40 for the students' eyes. What do you think of it.? 小题1:A. expensive   B. heavy   C. light 小题2:A. till   B. after  C. when 小题3:A. trouble   B. help   C. solve 小题4:A. TV  B. radio  C. computer 小题5:A. easy   B. difficult  C. hard 小题6:A. smaller   B. small  C. harmful 小题7:A. paper   B. keyboard   C. screen 小题8:A. with  B. in   C. by 小题9:A. computer  B. homework  C. e - textbooks 小题10:A. bad   B. dangerous  C. good