Accordingtoa61.(wide)acceptedtheorytheuniversebeganwitha“BigBang”62.threwmatterinalldirections.Forseveralbillionyearsafterthe“BigBang”theearthwasstilljustacloudofdust.Thenbetween4.5

Question

According to a 61.________(wide) accepted theory the universe began with a “Big Bang” 62._________ threw matter in all directions. For several billion years after the “Big Bang” the earth was still just a cloud of dust. Then between 4.5 and 3.8 billion years ago the dust 63._________(settle) into a solid globe. Then the earth became 64._______(violence) and then it exploded loudly. Water and gases were produced 65.____ time. Water was to be fundamental to the 66.________(develop) of life.

Years later green plants developed. Then animals came into being and then human beings began to exist on 67._____ earth. They control the world in 68.______(they) turn but put too much carbon dioxide into the atmosphere which prevents heat from 69._______(escape)from the earth into space. So the future of life will depend on 70.______ the problem can be solved.

Answer 1

61. widely  62.that/which 63.settled 64. Violent  65.in  66.development 67.the 68.their 69.escaping 70.whether