Books are normally thought of in terms of the pages that are looked at. They are simple, two-dimensional objects that we read. There are words on the page and occasionally (1) ____ that help us see more clearly what the words are being used to describe. They are sources of knowledge, but more often than not they aren’t considered very special.
Some books take it another steps further, (2) ____, and their pages jump out and form three-dimensional objects. These books can (3) ____ adults smile and cause children to be wide-eyed with wonder. Called pop-up books in our times, they have been around longer than most people think they have.
Pop-up books were originally called mechanical books, and these paper creations took (4) ____ of work to make. They were not for children at all, although centuries ago there were practically no books made for children. The mechanical books helped illustrate (5) ____ things as the phases of the moon or were used to teach complex theories.
1. A. explanations B. illustrations C. examples D. meanings
2. A. though B. although C. despite D. inspite
3. A. allow B. expect C. make D. cause
4. A. many B. a lot C. a number D. great deal
5. A. many B. like C. so many D. such