2. 外语
  3. A good title for this passage is ______. Newton’s theory of gravity was corrected by Einstein’s theory because of ______.

A good title for this passage is ______. Newton’s theory of gravity was corrected by Einstein’s theory because of ______.

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问题 A good title for this passage is ______.
Newton’s theory of gravity was corrected by Einstein’s theory because of ______.
选项 A、a new hypothesis about gravity
B、careful measurements of Mercury’s motion
C、new practical considerations of Newton’s theory
D、newly predicted observations
答案B
解析
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