Accordingtoa61.

问题详情：

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.

【回答】

61. widely  led 64. Violent    lopment r ping her

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