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《Lesson 3 Scientific Breakthroughs》最新PPT课件优质课下载
He was British who was living in 18th century. He invented an advanced steam engine which was the last straw of the First Industry Revolution in western countries.
He was born in Scotland in 1847 . He immigrated into the USA at the age of 24 and later became a America citizen.He was the inventor of telephone.
贝尔(Bell,
Alexander?Graham)（1847～1922）
Among the several important discoveries made in his life, the greatest is the creation of his famous Theory of Relativity. He also discovered famous mathematical statement e=mc2(energy equals mass times the speed of light squared).This statement or formula explained that a great amount of energy could come from a small piece of matter.
Albert Einstein
On December 17th, 1903, they made the world's
first flight in a machine that was heavier
than air and powered by an engine.
Wright Brothers
The designer of ENIAC, the first commercial computer made in the United States
American physicist John William Mauchly and J. Presper Eckert
这是美国军方(navy)要求宾州大学莫奇来（Mauchly）博士和他的学生爱克特（Eckert）设计的，准备用来计算炮弹及火箭、导弹(missiles) 的弹道，它最终在原子弹的研制中发挥了极大的作用。
Alexander
Fleming
(1881-1955)
Scottish biochemist
February 14, 1929 --- He discovers Penicillin. He was a young bacteriologist when an accidental discovery led to one of the great developments of modern medicine.
Edwin Hubble
American astronomer. He changed our ideas about the universe and how it developed. In the late Nineteen-Twenties, his study lead to the most important astronomical discovery of the Twentieth century -- the expanding universe. And he proved that mist were galaxies themselves. Astronomers now agree that far distant galaxies do exist.
Reading practice for general idea
Reading Strategy (1):
First read the text to get the general idea. Go through the whole text, don’t worry about some new word , you don’t need to understand every word exactly. Just work out the subject and the main idea.
1.The equation e=mc2
2.Penicillin