完形填空 Big schoolbags have been a serious problem for students for a long time.Maybe your schoolbag is too __26__ to carry and it troubles you a lot __27__ you want to find a book out to read. Now an etextbook will __28__ you.
It is said that etextbooks are going to be __29__ in Chinese middle schools.An etextbook in fact is a small __30__ for students.It is much __31__ than a usual schoolbag and easy to carry. Though it is as small as a book it can __32__ all the materials (材料) for study.The students can read the text page by page on the __33__， take notes with the pointer (屏写笔). Or even “__34__” their homework to their teachers by sending emails. All they have to do is to press a button.
Some people say etextbooks are good but some say they may be __35__ for the students' eyes. What do you think of it?26.A.light
27.A.till
28.A.trouble
29.A.used
30.A.TV
31.A.heavier
32.A.hold
33.A.blackboa
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