| 听短文，选答案。 1. How many kinds of paper are there today? A. Five thousand. B. Less than seven hundred. C. More than seven thousand, 2. What can the paper be made from except? A. trees and rice B. oil and butter C. cotton and other plants 3. Who invented the paper in China? A. Bi Sheng. B. Si Nan. C. Cai Lun. 4. The Chinese scientist invented paper in _____. A. the second century B. the third century C. the fourth century 5. What did Cai Lun use to make paper? A. Cloth and trees. B. Trees and plastic. C. Cloth and hair. |