阅读理解。 Is your schoolbag too heavy to carry? The e-schoolbag will help you. In fact, the e-schoolbag should be called the e-textbook. It is a small computer for students. Heavy schoolbags are not good for them. But the e-schoolbag will change (改变) everything. It is light and small, but it can save all the things for study, like a textbook, an exercise book and so on. There are some chips (芯片) of textbooks for students. The students can put the right chip into the e-schoolbag and read the textbook page by page on the screen. And they can also use the e-schoolbag to take notes (做笔记) or send emails to their teachers. Some people say the e-textbook is good for students' study, but some people say it is not good for students' eyes. I think only time will tell. 1. An e-schoolbag is ______. [     ] A. a TV set B. a usual book C. a heavy bag D. a small computer 2. The e-schoolbag is ______. [     ] A. big but light B. heavy and big C. small and light D. the same as a usual schoolbag 3. E-schoolbags are designed (设计) for ______. [     ] A. managers B. students C. writers D. teachers 4. The underlined word 'screen' means '______' in Chinese. [     ] A. 显示屏 B. 键盘 C. 录音机 D. 幻灯机 5. Which of the following is RIGHT? [     ] A. All the people like the e-schoolbag. B. E-schoolbags can do everything for students. C. Students can use the e-schoolbag to read the textbook. D. The e-schoolbag is good for students' eyes.