According to Lemaitre, the separate galaxies formed ________

公共英语五级

单选题According to Lemaitre, the separate galaxies formed _________.

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．when all the matter in the universe was all concentrated in one small mass

参考答案：B进入在线模考

B 【解析】由第一段中的“This primeval atom exploded for…at which time the galaxies formed．”可知。

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1What is the basic difference betweon the two classes of theories?

A．It concerns the place and time of the formation of matter.
B．It is whether the universe will continue to expand or not.
C．It is the current state of the universe.
D．The variations on evolutionary theories cause the difference.

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2According to Hoyle and his friends at Cambridge, _________.

A．the explosion occurred much earlier than Lemaitre suggested
B．it is hard to see how matter could be formed in this way
C．the expansion of the universe is not a real one
D．new material is continually being created

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3We see distant galaxies as they were long, long ago because _________.

A．they were closer 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

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