Unit 20 ArchaeologySection 1 BackgroundIWarm up.呈现一组包括石器时代，青铜时代，汉朝，唐朝的食物，住房，工具等的图片。（Stone Age, Bronze Age, Han Dynasty, Tang Dynasty）配以字幕和相应音乐。然后讨论：Discussion:Describe the life of people in China during the periods.1. What did they eat?2. Where did they live and what did their homes look like?3. What kind of tools did they use and what objects have we found from their age?4. What kind of entertainment did they have?IIBackground1.展示伴有英语配音的背景资料。背景：使用所给的图片或录像资料。配
