文档介绍：Summary to the text
As a result of the invention of paper, much is known about China history. However, in other parts of the world, much of the history is completely unknown. The Chinese people used different kinds of ways to keep records. Then they began to write on a kind of paper made from silk - But it was too expensive . So people developed a kind of paper, made from the fibers of plants, which was as soft and light as silk but cheaper. By the first century the making of paper had become common in some parts of China and after a time the invention reached other countries.
Step 4 Practise
Do the exercises on page 23 and those in the workbook.
Step 5 Exercises
I．用所给动词或动词组的正确形式填空
believe, print, form, invent, include, develop, describe, come out, throw away, keep a record of
1. The magazine _________ once a week.
2. Try to  ______ exactly what happened just before the accident.
3. Eggs __________ on the list of things to buy when I went shopping yesterday.
4. When she had claSses she used to _____________ everything that was important.
5. The mark of a man s shoe is clearly __________ in the snow.
6. I found my advice ________ upon him.
7. It ________ that before writing was developed people in China used to keep records by putting a number of stones together.
8. The telephone _______ in 1876.
9. A plan began _________ in his mind.
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