Big schoolbags have been a big 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 out a book to read. Now e-textbooks will 3 you. It is said that many Chinese middle schools are going to use e-textbooks. An e-textbook, in fact, is a small 4 for students. It is much 5 than a usual schoolbag and easy to carry. Though it is as small as a book, it can 6 everything for study. The students can read the text page by page on the 7 ，take notes 8 the pointer (屏写笔)，or even “hand in” their 9 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 10 for the students’ eyes. What do you think of it? 小题1: A．expensive B．heavy C．useful D．comfortable 小题2: A．till B．after C．before D．when 小题3: A．trouble B．keep C．help D．understand 小题4: A．TV B．radio C．pen D．computer 小题5: A．heavier B．lighter C．cheaper D．brighter 小题6: A．hold B．build C．find D．practice 小题7: A．blackboard B．keyboard C．screen D．menu 小题8: A．use B．in C．by D．with 小题9: A．computer B．homework C．e-textbooks D．plans 小题10: A．bad B．dangerous C．good D．Helpful