单项选择题

Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now listen to the passage. What did most European scholars believe before 17th century about-the size of the universe

A．That it can’t be measured.
B．That it doesn’t change.
C．That it’s getting smaller.
D．That it’s rapidly increasing.

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单项选择题

单项选择题

Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now listen to the passage. What did most European scholars believe before 17th century about-the size of the universe 您的浏览器不支持 audio 元素。