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  3. Do people get happier or more foul-tempered as they age? Stereotypes of irritable neighbors【C1】______, scientists have been tryi

Do people get happier or more foul-tempered as they age? Stereotypes of irritable neighbors【C1】______, scientists have been tryi

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问题    Do people get happier or more foul-tempered as they age? Stereotypes of irritable neighbors【C1】______, scientists have been trying to answer this question for decades, and the results have been【C2】______Now a study of several thousand Americans born between 1885 and 1980 reveals that well-being【C3】______increases with age—but overall happiness【C4】______when a person was born.
   【C5】______studies that have【C6】______older adults with the middle-aged and young have sometimes found that older adults are not as happy. But these studies could not【C7】______whether their【C8】______was because of their age or because of their【C9】______life experience. The new study, published online January 24 in Psychological Science ,【C10】______out the answer by examining 30 years of data on thousands of Americans, including【C11】______measures of mood and well-being, reports of job and relationship success, and objective measures of health.
   The researchers found, after controlling for variables【C12】______health, wealth, gender, ethnicity and education, that well-being increases over everyone’s lifetime.【C13】______people who have lived through extreme hardship, such as the Great Depression,【C14】______much less happy than those who have had more【C15】______lives. This finding helps to【C16】______why past studies have found conflicting results—experience【C17】______, and tough times can【C18】______an entire generation’s happiness for the rest of their lives. The【C19】______news is,【C20】______we’ve lived through, we can all look forward to feeling more content as we age.
【C16】
选项 A、explain
B、estimate
C、establish
D、exhibit
答案A
解析 本题考查动词词义辨析。explain指“解释，说明”；estimate指“估计，判断”；establish指“建立；创办；安置”；exhibit指“展览，显示；提出(证据等)”。该句是指：这些发现帮忙……为什么过去的研究会得出前后不一致的结论，破折号后面的部分为解释说明。因此，只有explain符合文意，表示对原因的解释。
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