互动封闭仿真课堂
1、智能交互 2、电子板书式视频教学 3、在线互动问答 4、封闭课堂启发式教学方式
随堂测试、知识梳理、易错点揭示、总结启迪智能错题本
听课中的错题能自动加入错题本,课后可方便复习及导出错题本升级服务
在线答疑、课后同类题练习、讲义下载、短信提醒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