As the result of “Big Bang”, the violent earth slowly settled into a globe ________(move) around the sun. The gases which were to make the earth’s __________(大气层）come into being from the _________(explode) of the dust ball, with water _________(follow) them while the earth cooled down. It allowed the beginning for life. Many millions of years______, the first ________(极度的)small plants began to appear _____ the surface of the water, __________(繁殖) and _______(fill) the sea and oceans, which encouraged the later development of early shellfish and all sorts of dish.

moving

atmosphere

explosion

following

later

extremely

on

multiplying

filling