47. What does the author say about the Jones-Klenow method?
- A. It is widely used to compare the economic growth across countries.
- B. It revolutionizes the way of measuring ordinary people's livelihood.
- C. It focuses on people's consumption rather than their average income.
- D. It is a more comprehensive measure of people's economic well-being.
答案：D
答案句：While thinking about the question, we came across a recently published article by Charles Jonesand Peter Klenow, which proposes an interesting new measure of economic welfare. While by no means perfect, it is considerably more comprehensive than average income, taking into account not only growth in consumption per person but also changes in working time, life expectancy, and inequality.
参考译文：在思考这个问题时，我们偶然发现了查尔斯·琼斯和彼得·克莱诺最近发表的一篇文章，该文章提出了一种有趣的经济福利新衡量标准。虽然绝非完美，但它比平均收入全面得多，不仅考虑了人均消费增长，还考虑了工作时间、预期寿命和不平等的变化。
定位线索：题干“Jones-Klenow method”→答案句取自第2段“proposes an interesting new measure of economic welfare”；文中“considerably more comprehensive than average income”对应选项D“a more comprehensive measure of people's economic well-being”。
解析：题干问作者对Jones-Klenow方法的看法。答案句明确指出该方法“considerably more comprehensive than average income”，并列举了考虑的因素，与选项D“a more comprehensive measure of people's economic well-being”直接对应。选项A“widely used”文中未提，B“revolutionizes”程度过重，C“focuses on consumption”偷换概念，该方法考虑多方面因素而非仅消费。
50. What can we infer from the passage about American people's economic well-being?
- A. It is much better than that of their European counterparts.
- B. It has been on the decline ever since the turn of the century.
- C. It has not improved as much as reported by the Census Bureau.
- D. It has not been accurately assessed and reported since mid-2000s.
答案：C
答案句：In their thirst for evidence on this issue, commentators seized on the recent report by the Census Bureau, which found that average household income rose by 5.2% in 2015. Unfortunately, that conclusion puts too much weight on a useful, but flawed and incomplete, statistic. … Since 2007, economic welfare in the U.S. has continued to improve. However, the pace of improvement has slowed markedly.
参考译文：在渴望获得关于这个问题的证据时，评论员们抓住了人口普查局最近的报告，该报告发现2015年家庭平均收入增长了5.2%。不幸的是，这个结论过分依赖一个有用但有缺陷且不完整的统计数据。……自2007年以来，美国的经济福利持续改善。然而，改善的步伐明显放缓。
定位线索：题干“American people's economic well-being”→答案句取自第1段“flawed and incomplete”和第5段“pace of improvement has slowed markedly”；文中“slowed markedly”对应选项C“has not improved as much as reported”。
解析：题干要求推断美国人的经济福利状况。答案句指出人口普查报告有缺陷，且经济福利改善步伐明显放缓，说明实际改善不如报告所示，与选项C“has not improved as much as reported by the Census Bureau”一致。选项A“much better than European counterparts”文中只比较法国且指出比较有缺陷，B“on the decline”与“continued to improve”矛盾，D“not accurately assessed since mid-2000s”范围扩大，文中只提到2015年报告有缺陷。