2. 外语
  3. The greatest benefit of science has been ______. The subject of this passage can be ______.

The greatest benefit of science has been ______. The subject of this passage can be ______.

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问题 The greatest benefit of science has been ______.
The subject of this passage can be ______.
选项 A、important scientific principles
B、science and modern conveniences
C、science and civilization
D、discovery of scientific laws
答案C
解析
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