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 forever
D、about 20,000 million years ago

答案B

解析由第一段中的This primeval atom exploded for...at which time the galaxies formed可知答案。

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公共英语五级笔试

公共英语（PETS）

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

公共英语五级笔试

公共英语（PETS）

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