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人教2003课标版《Using LanguageⅡ》新课标PPT课件优质课下载
phonograph
留声机
telephone
electric bulb
电灯泡
Nowadays people can’t live without electricity as fish can’t live without water.
What are they famous for?
Newton
discovered
gravity
Benjamin Franklin
discovered
flash is electricity.
Madame Curie
discovered
radium
Difference between discovery and invention
A discovery is ______
something existing but not yet known.
An invention is_______ something
not existing before.
finding
creating
An amphibious car
水陆两用汽车