A-A+
Why could other inventors succeed in showing m
问题详情
Why could other inventors succeed in showing motion pictures with their own devices？
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.请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：D
解析：文中第二段第二行中“Edison had solved certain problems, making it possible for other inventors move ahead with their own devices. ”给出了答案。
