科研之友
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<正>教学过程Step 1. Leading-in1.Enjoy a song“If you are...”.If you are happy, happy,happy, laugh out loud.If you are sad, sad, sad, cry out loud.If you are angry, angry,angry, breathe deep.If you are hungry, hungry,hungry, listen to your stomach.If you are sleepy, sleepy,sleepy, let out a big yawn.
