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90年代以来,世界科技正突飞猛进,达国家科技进步对经济增长的贡献率经超过了其他生产要素贡献率的总和,(?)的未来和国家的繁荣比以往任何时候都更依赖于创造和应用知识的能力与效率。(?)经济的大潮正以“包四荒、吞六合”之(?)卷全球。站在技术革命和知识经济浪潮(?)的美国,从1991年3月起经济走出低谷(?)到去年12月底,已连续增长81个月,(?)势头未减,因此认真研究美国经济发展(?)
Since the 1990s, science and technology in the world have been advancing by leaps and bounds, contributing more to the total contribution made by the state in science and technology to economic growth than the contribution rate of other factors of production. The future of (?) And the prosperity of the country are more dependent than ever before on the creation and application of Knowledge ability and efficiency. (?) The tide of the economy is rolling around the world with "? In the United States, where the technological revolution and the wave of knowledge-based economy (?) Have taken off, the economic downturn (?) Has been on a continuous 81-month increase since the end of December 1991 (?), And the U.S. economy has been carefully studied development of(?)