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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
39
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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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