• 2021-04-14
    The sixteenth century saw Nicholas Coper...lves around the Sun.
  • 内容

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      The physics teacher said that the earth_________ around the sun.

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      Galileo to prove that the earth rotates around the sun.

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      How do we read “在17世纪30年代”in English? A: in the thirties of the sixteenth century B: in the thirties of the seventeenth century C: in the seventeen thirties

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      中国大学MOOC: The 20th century saw a dramatic increase of urbanization. Today, more people live in cities than in rural areas, and urbanization continues to grow around the world.

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      Ellipses (椭圆) are used to describe the motions of the planets around the sun.