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教学过程rnStep 1.Warming-up (略)rnStep 2.Pre-readingrn1.Look and askrnT:Look,this is the cover of the book.There are three characters on the cover,do you have any questions about them?You can use “who” “where”and “what” to ask.Have a try.rnS1:Who are they?rnS2:Where are they from?rnS3:Why are they heroes?rnS4:What do they do?rnS5:What do they eat?