2. 职称英语
  3. According to the discoveries of the astronomers, when did galaxies form? [br] Ac

According to the discoveries of the astronomers, when did galaxies form? [br] Ac

游客2023-09-15  13
问题 According to the discoveries of the astronomers, when did galaxies form? [br] According to the passage, the "hierarchical" theory of galaxy formation suggests that big, bright galaxies formed as ______.
选项
答案 smaller galaxies collided and merged
解析 根据题干中的关键词“hierarchical”theory定位到最后一段，可得答案。
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