全国百强校河北省石家庄实验中学人教高中英语选修八.pptxVIP

第1页/共56页全国百强校河北省石家庄实验中学人教高中英语选修八第2页/共56页If you wish to succeed, you should use persistence as your good friend, experience as your reference, prudence as your brother and hope as your sentry. ——Thomas Alva Edison如果你希望成功，当以恒心为良友，以经验为参谋，以谨慎为兄弟，以希望为哨兵。 ——爱迪生第3页/共56页Why are they famous?Thomas Edison invented the electric bulb.第4页/共56页Why are they famous?Issac Newtondiscoveredgravity第5页/共56页Why are they famous?Benjamin FranklindiscoveredLightning is electricity第6页/共56页Why are they famous?Benjamin FranklindiscoveredLightning is electricity第7页/共56页inventions or discoveries?An amphibious carStephenson’s “Rocket”第8页/共56页An amphibious car (2003)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.第9页/共56页Stephenson’s “Rocket”(1781-1848)George Stephenson was one of the first men to design engines for the railways which were new at that time. One of the first tracks to be laid was between Stockton and Darlington. Stephenson was one of the first railway engineers and in 1825 he drove the first train along the line.第10页/共56页DNAWork out the rules that will help you decide what a discovery is and what an invention is.第11页/共56页The structure of DNAThis was discovery of Francis Crick and James Watson and published in 1953. These two scientist 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.第12页/共56页 What is an invention? An invention is something that created by human being, such as the lighting rod. Inventing is a scientific activity.第13页/共56页 What is a discovery ? A discovery merely makes known something that already exist in nature, such as the discovery on the New Continent by Columbi