2. 外语
  3. What do both theories assume to be true? According to Lemaitre, the separate galaxies formed______.

What do both theories assume to be true? According to Lemaitre, the separate galaxies formed______.

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问题 What do both theories assume to be true?
According to Lemaitre, the separate galaxies formed______.
选项 A、during a pause in the expansion of the universe.
B、at the time of the primeval explosion.
C、and will continue to form for ever.
D、about 20,000 million years ago.
答案B
解析
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