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  3. Where did the movies begin? It is often said that they are an American invention. It is not entirely true. The motion picture ha

Where did the movies begin? It is often said that they are an American invention. It is not entirely true. The motion picture ha

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问题     Where did the movies begin? It is often said that they are an American invention. It is not entirely true. The motion picture has been the most international arts. Before the dawn of the twentieth century, inventors in France, England and the United States were among the dozens of men who were trying to develop ways of using photographs to create the effect of motion.
    Soon after 1889, when the famous inventor Thomas Edison first showed motion pictures through a device called the kinetoscope(活动电影放映机), other devices for the same purpose appeared all over the world. Edison had solved certain problems, making it possible for other inventors move ahead with their own devices. One other important contribution by Edison was the introduction of 35 mm as the international standard film width.
Why could other inventors succeed in showing motion pictures with their own devices?
选项 A、Because they had a device called kinetoscope.
B、Because they asked Thomas Edison to help them.
C、Because they got a way of using their own devices.
D、Because Thomas Edison had successfully solved certain problems.
答案D
解析 文中第二段第二句“Edison had solved certain problems，making it possible for other inventors move ahead with their own devices．”给出了答案。
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