A、57％. B、33％. C、16％. D、54％. A选项都是百分比，故问题与占比有关。问题问2007年富裕国家的人们认为自己幸福的人数占比是多少。录音提到57％的富裕国家的受调查者认为自己是幸福的。故A项57％正确。B项33％是发展中国家的幸福比例；

Everything that rises must converge. Emerging markets are catching up with the West in the happiness stakes. POETS, songwriters and left-wing politicians hate the idea, but for decades opinion-poll evidence has been clear: money buys happiness and the richer you are, the more likely you are to express satisfaction with your life. Until now, a survey of 43 countries published on October 30th by the Pew Research Center of Washington, DC, shows that people in emerging markets are within a whisker of expressing the same level of satisfaction as people in rich countries. It is the biggest qualification to the standard view of happiness and income seen so far.
    The Pew poll asks respondents to measure, on a scale from zero to ten, how good their lives are.
    Those who say between seven and ten are counted as happy. In 2007, 57％ of respondents in rich countries put themselves in the top four tiers; in emerging markets the share was 33％; in poor countries only 16％—a classic expression of the standard view.
    But in 2014, 54％ of rich-country respondents counted themselves as happy, whereas in emerging markets the percentage jumped to 51％. This was happening just at a time when emerging markets’ chances of converging economically with the West seemed to be slim.
    Rich countries did not experience steep declines in happiness. The decreases in America and Britain were tiny, a single percentage point, while the share of happy Germans rose 13 points. A large drop in formerly joyful Spain ensured a modest overall decline for the rich. But the convergence happened thanks to huge improvements in countries such as Indonesia +35 and Pakistan +22. In 12 of the 24 emerging markets, half or more people rate their life satisfaction in the top tiers of the ladder.
    This is not to say the link between income and satisfaction has been snapped. Poor countries still lag behind: only a quarter of the people there are in the happy tiers-half the level of the other two groups. There is also a clear link between happiness and income growth as opposed to income levels. China’s GDP rose at an annual average rate of 10％ in 2007-14 and its happiness level rose 26 points.
    Within countries richer people express more satisfaction than their poorer neighbors. In every country in every group, richer folk with more goods expressed higher levels of happiness. But the secret of happiness has been scattered around. Women tend to be happier than men. Married people are happier than un married ones. Latin Americans are more satisfied than people in other emerging markets. Asians are the most optimistic; Middle Easterners the least. Income still matters. But it has been removed from the throne.
    22.According to the speaker, what converge in happiness stakes?
    23.What percentage of people counted themselves as happy in rich countries in 2007?
    24.According to the study findings, which country saw the biggest fall in happiness?
    25.What do we learn about the secret of happiness?