Unit 4 AstronomyByBrainstormingIn China In western countriesREADING How life began on the earth The text may tell us the _ of life on the earth.developmentFast reading Match the main ideaPara1Para 2Para3Para4Para5The development of plants and animals on the earth The importance of water for lifeThe appearance of humans and their effects on the earthThe formation of the earthA widely accepted theory about the formation of the universePara2 The formation of the earth Big Bangwatera cloud of dustat
