【名校课件】人教版必修3：Unit4AstronomyLearningaboutlanguage.ppt

Answer key for exercise 1:;-al;C A C B;Is the moon a planet ? This question is ______________if students are to show that they understand the nature of __________. Some scientists think that the earth ______________ the moon because the moon circles our planet. Others believe that the moon _______ before the earth was formed. They think that earlier in time it travelled through space as a small planet which was caught by the earth’s gravity. __________, it goes around our planet. The evidence for this theory is that the _____ that make up the rocks on the moon seem to be different from those on earth. What is clear is that the moon is smaller than the earth and this _________ it _______ escaping from the earth. Although its origin may still be a ________, the moon can never be anything more than a satellite of the earth.;Is the moon a planet ? This question is ______________if students are to show that they understand the nature of __________. Some scientists think that the earth ______________ the moon because the moon circles our planet. Others believe that the moon _______ before the earth was formed. They think that earlier in time it travelled through space as a small planet which was caught by the earth’s gravity. __________, it goes around our planet. The evidence for this theory is that the _____ that make up the rocks on the moon seem to be different from those on earth. What is clear is that the moon is smaller than the earth and this _________ it _______ escaping from the earth. Although its origin may still be a ________, the moon can never be anything more than a satellite of the earth. ;emotional words