Is your schoolbag too heavy? The e-schoolbag will help you. It is said that e-schoolbags are going to be brought into 43 in Chinese middle schools soon. Heavy schoolbags have been a serious 44 for a long time. But the e-schoolbag will 45 . An e-schoolbag is 46 lighter than a usual schoolbag. Perhaps, the e-schoolbag should be 47 an e-textbook. It is a small computer for students. It is as 48 as a usual book, 49 it can still have all the things for study, such as textbooks, exercise books and so on which can be made 50 chips(芯片) like stamps. The students can read the text page by page on the screen, take notes, or even send e-mails to their teachers. They only need to 51 the right chip into the e-schoolbag. Then they can use it. Some people say 52 e-textbooks can be easily broken, while others say it is not good for eyes. But only time will tell. 小题1: A．use B．useful C．used D．to use 小题2: A．idea B．problem C．question D．thought 小题3: A．work it out B．work out it C．work out D．work them out 小题4: A．very B．much C．too D．so 小题5: A．call B．calls C．called D．calling 小题6: A．small B．smaller C．smallest D．most small 小题7: A．and B．as C．or D．but 小题8: A．into B．from C．up D．of 小题9: A．bring B．get C．take D．put 小题10: A．if B．what C．that D．which