2. 外语
  3. What do both theories assume to be TRUE? We see distant galaxies as they were long, long ago because______.

What do both theories assume to be TRUE? We see distant galaxies as they were long, long ago because______.

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问题 What do both theories assume to be TRUE?
We see distant galaxies as they were long, long ago because______.
选项 A、they were close together then.
B、the universe has always looked as the same.
C、their light takes so long to reach us.
D、they have travelled such a long way.
答案C
解析
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