X-rays were first _______ by a German scientist.


  1. A.
    find out
  2. B.
    invented
  3. C.
    made
  4. D.
    discovered
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Marie Curie，Whose birth name was Manya Sldodowska ，was born in Poland on November 7,1867．①Her father was a high school physics teacher and encouraged her interest in science．In 1891 she went to study in Paris and changed her name to the French，Marie．Two years later she passed the examination for a degree in physic with the highest grades in her class．②She later married a French physicist Pierre Curie．

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