题目内容

选词填空

Where do we come from? How did the universe begin? When we watch the stars through the telescope, we wonder why the universe   1  .After the “Big Bang”, the earth was just a cloud of   2   dust.Somehow it   3   loudly with fire and rock, which made the earth's atmosphere.As the earth cooled down, water began to appear on its   4   which was important for the beginning of life.Then living animals   5   on the earth.

答案:
解析:

1.exists 2.energetic 3.exploded 4.surface 5.multiplied


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