单项选择题

A．They go out a lot more in the winter.
B．They prefer to teach people in winter,
C．They know when a river is too dangerous.
D．They never try rivers graded from one to five.
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单项选择题
Why did the author mention the example of Kodak
A．to show that Kodak lacked knowledge of the Chinese camera market.
B．to illustrate Kodak"s tortuous road to success.
C．to show that Chinese middle class has leapfrogged from film camera to digital camera.
D．to exemplify that failure to anticipate leapfrogs may result in business losses.
填空题
drug-dealing
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