42. In the U.S. labor market, the primary concern of people with less schooling

　　41 An economist& 39;s prediction about a shorter average working week seemed to be correct for a time in th

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　　40 Many economists assume people& 39;s thirst for material things has prevented them from enjoying more leisur

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　　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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