Unit 4 Astronomy：The science of the stars1. spreadvt.&vi. 展开,铺开;散布;扩大;延伸The bird spread its wings. 那只鸟...
Unit4Astronomy:thescienceofstars教案Teachingaims:1.Talkaboutthescienceofstars2.PractisegivinginstructionsTeachingdifficulties:1.Le...
