为什么美国经济自１９７５年迄今仍然能够保持带动世界经济增长的引擎动力，日本经济却熄火呢？问题的答案就在于美国的服务业增长动力十足，美国自５０年代开始由制造业主导经济脱胎换骨，逐渐变成服务业主导经济，５０年代服务业创造了全国一半的工作职位，９０年代中期提供 Why is the U.S. economy still able to maintain the engine power that has brought the world economic growth from 1975 to the present? The answer to this question lies in the fact that the service industries in the United States have a great momentum of growth. Since the 1950s, the United States has taken a leading role in manufacturing-led economy and gradually transformed itself into a service-oriented economy. In the 1950s, the service industry created half of the country’s work positions. In the mid-1990s