44. Many of the highest earners have a keen interest in and

　　43 Keynes was right in predicting that technology would make the economy much more productive 　　（本题出自202

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　　42 In the U S labor market, the primary concern of people with less schooling and fewer skills is to secu

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　　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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