1、本网站免费注册后即可以下载，点击开通VIP会员可无限免费下载！
2、资料一般为word或PPT文档。建议使用IE9以上浏览器或360、谷歌、火狐浏览器浏览本站。
3、有任何下载问题，请联系微信客服。
扫描下方二维码，添加微信客服
北师大2003课标版《Lesson 3 Scientific Breakthroughs》精品PPT课件优质课下载
He has achieved breakthroughs in hybrid rice.
He is called Father of Hybrid Rice.
He still does researches in the fields and labs.
1. He was a son of a Scottish shepherd. Although his discovery is important, he remained modest and said “Nature made penicillin.”
2. Using his telescope,he proved that the universe is actually larger than it had been thought, and that areas of mists were in fact galaxies .
3. He showed in his “theory of relativity” that even time, mass or length are not constant.
4. During the 2nd world war, the US Navy turned to them to produce a machine. They didn’t finish until after the war, in February 1946.
A. Albert Einstein
B. Alexander Fleming
C. Edwin Hubble
D. Eckert and Mauchly
not talking much about one's own ability
staying the same
In the 20th century, many amazing discoveries were made in medicine, communications and transport, not to mention our knowledge of 1 .
Some pioneers
Discoveries﹨ Inventions
Significance
Albert Einstein
2______
It showed how a small piece of mass could produce an unbelievable amount of 3 .
Theory of relativity
It showed time, mass and length 4 . according to our experience of them.
Edwin Hubble
5 like small areas of mists
It proved that the universe was vastly 6 . than had previously been thought.