Scientificachievements2高二英语课件
日期：2010-05-28 05:03
Can you imagine what our classroom would be like 2000 years ago?No electricity
No glasses
No paper
No TV
No computer
No multimedia device
No e-dictionaryUnit11Alexander Bell electricity
Thomas Edisonthe First telephone
Wright Brothersthe electric lamp
Madame Curieblack holes in the univers，
查看全部