高中英语 Unit esson 3 Scientific Breakthroughs 课件 北师大版选修7 课件VIP专享VIP免费

Unit 20 Lesson 3Scientific BreakthroughsSome discoveries or inventions in the 20th century:Means of transport:Wright BrothersThe change in communication:Neil Alden Armstrong was the first person to set foot on the Moon.This is my personal one small step, it was a great step of mankind.The first artificial satellite, Sputnik 1, was launched by the Soviet Union in 1957.His greatest discovery is the creation of his famous Theory of Relativity. Albert EinsteinAlbert Einstein was considered the greatest scientist of the 20th century. Edwin Hubble was an American astronomer. His most important discovery was the expanding universe. Edwin HubbleHubble space telescopeAlexander Fleming, a Scottish biochemist,discovered Penicillin.Alexander FlemingThe designer of ENIAC, the first commercial computer made in the United States.John William Mauchly and J. Presper EckertThe World First ComputerPercy Spencer, an American engineer and inventor, discovered microwaves.Percy Spencer1.The equation E=mc22.Penicillin3.The first computer4.Other galaxies5. MicrowaveTry to match the discoveries with how they were discovered?a)Scientists worked together as a teamb)There was a lucky accidentc)A scientist did research for many yearsd)A scientist was inspirede) There was a mistake1. Einstein was at work when he thought of the equation “E=mc2”.2. Einstein participated in the program that developed the nuclear bomb.3. Einstein observed changes in time, size and mass.4. Hubble studied the universe for over twenty years.5. Hubble discovered that our galaxy is bigger than we thought it was.Are these statement true or false according to the text or is there no information?6. Fleming had been studying bacteria in his laboratory when the discovery happened.7....