2. 外语
  3. A good title for this passage is ______. Which statement is true?

A good title for this passage is ______. Which statement is true?

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问题 A good title for this passage is ______.
Which statement is true?
选项 A、Einstein’s general theory of relativity will survive any observations to be found.
B、The general theory of relativity is not an extention of the theory of gravity.
C、The general theory of relativity may be disproved or falsified.
D、The general theory of relativity has completely replaced the theory of gravity.
答案C
解析 从文中第一句(主题句)Any physical theory is provisional说明A的说法武断；第二段第一句(在实践中情况是这样的，一种新理论的产生是旧理论的真正延续)说明B不对；文章括号中的话说明D不对。根据卡尔。波珀说的话说明C正确。
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