Official 51 Lec 4
答题结果:0/6
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Question 1 of 6
What is the professor's main purpose in the discussion?

A.

To compare modern and past theories about the solar system.

B.

To examine the astronomical research that led to the acceptance of the heliocentric theory.

C.

To evaluate changes in seventeenth-century astronomy.

D.

To explain why some people resisted the heliocentric theory.

我的答案:

正确答案:D

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