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

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

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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 be cause 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、exhibit
B、explain
C、estimate
D、establish
答案B
解析 本句指出：这一发现有助于为什么过去的研究发现总是得出相互矛盾的结果。破折号后面的部分则给出了其中原因。因此，空格处填入的动词应表示对原因的解释，只有B．explain符合文意。exhibit“展览，显示，提出(证据等)”，estimate“估计，判断”，establish“建立，创办”，均不符合题意。
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