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Listening 1Modern paper-making began in China about 2000 years ago. This process produced paper from cloth, straw, wood or the bark of trees.现代造纸术2000多年前的中国，这个过程通过布条、稻草、木头和树皮产生纸。
The raw materials are struck over and over until they become loose. Then they are mixed with water.原始的材料经过反复地捶打，直到它们变得松散。
然后将它们与水混合。
After the water has been removed, the flat, thin, form remaining is permitted to dry. This becomes a sheet of paper.水去除之后，就可以把又薄又平坦的剩余物拿去烘干，烘干之后就变成了一张张纸。
Everything is placed in a container, covered with water and brought to a boil.所有的原材料都放入一个容器中，用水混合，然后放入沸腾炉中。
The paper is smoothed and pressed to remove trapped air. You can use a common electric iron used for pressing clothes.纸被平滑和挤压以去除滞留的空气。
可以使用普通熨衣服的电熨斗完成。
Listening 2Professor Cox says Japan has one of the best building code systems in the world.Cox教授说日本拥有一套世界上最好的建筑规范系统。
四大发明英语幻灯片1、幻灯片1：引言1、四大发明：中国古代的四种重要发明，包括造纸术、指南针、火药和印刷术。
这些发明在古代中国和全世界的文明进程中都起到了重要的推动作用。
2、幻灯片2：造纸术3、描述：造纸术是古代中国的一项重要发明，最早可追溯到公元前105年左右。
蔡伦在东汉时期改进了造纸技术，使得纸张的质量更好，更适合书写。
这项技术的传播对世界文明的保存和传播起到了巨大的作用。
4、英语表述：Paper-making, an important invention in ancient China, originated from approximately 105 BC. Cai Lun improved the technique of paper-making during the Eastern Han dynasty, making the quality of paper suitable for writing. The spread of this technology greatly contributed to the preservation and transmission of the world's civilization.2、幻灯片3：指南针1、描述：指南针是中国航海发展的重要标志，最早有记载的司南源于战国时期，但其发明者和年代尚不确定。
指南针的发明对世界航海事业的发展起到了巨大的推动作用。
2、英语表述：The compass, a significant development in ancient Chinese navigation, first appeared in recorded history during the Warring States period. Although the inventor and exact date of its creation are unknown, the compass played a crucial role in the development of navigation around the world.3、幻灯片4：火药1、描述：火药是中国古代的一项伟大发明，最早可追溯到唐代。
