一起答
单选

What was another contribution by Edison to the movies?

  • A.He introduced the 35 mm standard machine to the world.
  • B.He introduced the 35 mm as the international standard film width.
  • C.He created a 35 mm standard device for showing movies.
  • D.He created his own standard devices for showing 35 mm film.
参考答案
查看试卷详情