单选题
Copernicus developed his theory ______.
A、
by using various telescopes
B、
based on Aristotle's beliefs
C、
through observations and reasoning
D、
under the encouragement of his friends
【正确答案】
C
【答案解析】
解析:由文章第三段最后二句可知,他是通过观察和推理,形成自己的理论的。
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