分享有礼



分享至X
高中英语《发明和发明家 Unit 3 Inventors and inventions (part 1)》(选修8) How do you get in touch with your friends? How do you keep food fresh in summer? A discovery=An invention an amphibious car This is the first car that can travel safely on water and on land.When moving on water,the wheels of the car turn sideways and move into the body.The underneath of the car is strong enough to sail as a boat.It is a prototype and is not yet being produced for sale.This is an interesting modern invention. Stephenson's "Rocket" George Stephenson was one of the first men to design engines for the railways which were new at that time.It was a great invention. The structure of DNA This was a discovery of Francis Crick and James Watson and published in 1953.These two scientists were the first to show that our genes consist of two spirals of DNA(called the double-helix).This work led directly to the human genome project in 2003,which discovered the Structure of DNA. Work out the rules that will help you decide what a discovery is and what an invention is. A discovery is (finding out something already existing in nature but not yet known). An invention is (something that was created by human beings not existing before.) Give the right order of these stages! Applying for a patent Finding a problem Doing research Testing the solution Thinking of a creative solution Deciding on the invention The suitable order: Finding a problem Doing research Thinking of a creative solution Testing the solution Deciding on the invention Applying for a patent important vocabulary in this part Go through/Have inventions approved/Scientific activity Apply for a parent/Think of/Decide on Do research on/in/into Language points 1.go through 1)经历(不愉快的事) Most families went through a lot in the war. 2)通过,成功,成交 The plan did not go through. 3)审阅,检查 I can't go through the letters in an hour. 4)翻找,查看 Mother went through the drawer for her glasses. 5)穿过,通过 A terrible noise went through the house. read through 通读 look through 浏览 flow through 流过 get through 通过,接通,使...成功 search through 搜寻,查找 Homework Preview the reading text!
设置默认视频清晰度
自动(将会根据您的网速,自动调整清晰度)
标清(适合网速较慢,视频卡顿的用户)
高清(适合网速较快,视频无卡顿的用户)
超清(适合网速极快,追求高品质享受的用户)
选择课程
课堂提问
课程评论