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What do both theories assume to be true? What is the basic difference between the two classes of theories?

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问题 What do both theories assume to be true?
What is the basic difference between the two classes of theories?
选项 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.
答案B
解析 由第一段最后一句However, basically, evolutionary theories take it that...has been expanding ever since可知，两种理论的根本区别在于对"宇宙是否会继续膨胀"这一问题的不同看法。
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