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[单选题][单选题] What was another contribution byEdison to the movies?
  • AHe introduced the 35 mm standard machineto the world.
  • BHe introduced the 35 mm as theinternational standard film width.
  • CHe created a 35 mm standard device forshowing movies.
  • DHe created his own standard devices forshowing 35 mm film.
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