Unit20 New Frontiers Lesson 3 Reading课件-2021-2022学年北师大版高二英语选修七

Lesson 3 Scientific Breakthroughs In the 20th century, the world changed completely. What led to the changes? Discoveries! Brain Storming Name the discoveries Can you single out the most important one? pick out airplane microwave oven mobile phone computer medicine Percy Spencer Alexander Fleming Edwin Hubble Eckert Albert Einstein Machly However, it is possible to single out a few pioneers of the 20th century. Fast reading General Idea A. the process of scientific breakthroughs. B. scientific discoveries in the 20th century. C. pioneers in scientific discoveries of the 20th century. What's the main idea of this passage? A. the process of scientific breakthroughs. B. scientific discoveries in the 20th century. C. pioneers in scientific discoveries of the 20th century. C. pioneers in scientific discoveries of the 20th century. What's the main idea of this passage? Para1 Paras2-8 Para 9 A.Some great pioneers and their inventions B.The significance of these breakthroughs C.A brief introduction of scientific breakthroughs in the 20th century Structure Part 1( Para1) Introduction Part 2 (Paras2-8) five pioneers and their inventions Part 3 (Para9) Significance Careful Reading task 1: key information Five pioneers of the 20th century Who Who was the pioneer? What What breakthrough did he make? When When did he make it? How How did he achieved it? 11 Five pioneers of the 20th century Alber Einstein Edwin Hubble Alexander Fleming Eckert & Mauchly Percy Spencer 12 Lorem ipsum dolor sit amet, consectetur adipisicing elit. Lorem ipsum dolor sit amet, consectetur adipisicing elit. Who What When How Einstein Hubble Fleming Eckert Mauchly Spencer Five pioneers of the 20th century 13 Lorem ipsum dolor sit amet, consectetur adipisicing elit. Lorem ipsum dolor sit amet, consectetur adipisicing elit. Who