40. Many economists assume people's thirst for material

　　39 Friedman believes inequality in the U S largely explains why increasing productivity has not resulted in

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　　38 American workers& 39; average weekly working time has not changed for nearly half a century （本题出自2024年

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　　37 As ordinary American workers& 39; average hourly pay had decreased despite increasing productivity, they had

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　　36 Some people view socializing at the workplace as a chance to develop personal relationships （本题出自2024年

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　　It& 39;s well known that physical exercise is beneficial not just to physical health but also to mental healt

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