47. While serving as a track coach, Bowerman tried to design running shoes that were lighter and more shock-absorbent.

　　48. During his visit to Japan, Knight convinced the officials of the Onitsuka Tiger Company that its product would have potentials in the U.S.

　　49. Blue Ribbon Sports as unable to hire experts due to the absence of established athletic footwear in North America.

　　50. In the early years of Nike, communication within the company was usually carried out informally.

　　51. What qualities of Bowerman’s teams formed the basis of Nike’s early management style?

　　The team spirit and shared valves of the athlets.

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