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1、DefinitionAn advertisement uses words and pictures to 1._ people to buy a product or service, or to believe in an idea.Two main 2._ of ads3._ adsThey are 4._ for to advertise a product or service.Public service adsThey are often run free of 5._, and are meant to educate people about health, safety,
2、or any other problem that has an 6._ on public welfare. Two main 2.types/kinds of adsPublic service adsThey don t play 7._on people. They 8._ at teaching and benefiting people, helping us lead better lives.WarningsBe 9._ of the skilful methods used in ads to try and sell us things. 10._ falling for the tricks some advertisements play.
英语 Unit 1 AdvertisingSection Ⅰ Welcome to the unit & ReadingPrereading 牛津译林版必修4
