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精英家教網 > 初中英語 > 題目詳情

Newton ________ weight (重力) .


  1. A.
    discover
  2. B.
    discovered
  3. C.
    found
  4. D.
    invented
B
解析:根據題意,牛頓發現了重力,要用一般過去時態,此項屬于科學方面的發現,用discover。故選B。
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