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  3. We all like to feel needed. But new research suggests having a sense of purpose is good for our health, too. In a study of 7

We all like to feel needed. But new research suggests having a sense of purpose is good for our health, too. In a study of 7

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问题     We all like to feel needed. But new research suggests having a sense of purpose is good for our health, too.
    In a study of 7, 000 people, those with the strongest sense of direction in life were over 70 percent less likely to suffer a stroke.
    The researchers【C1】______for other aggravating factors such as blood pressure and alcohol use and believe the【C2】______comes through regulating the immune system.
    It has long been thought that【C3】______meaningful activity after retirement is important for physical and mental health—which often declines【C4】______soon after retirement.
    But, while past research focused on the【C5】______effects of negative psychological traits, such as depression and anxiety, new research is investigating how positive traits, such as【C6】______, protect against illness.
    In the recent study, men and women aged 50 and over were【C7】______for four to five years and completed psychological tests while researchers recorded strokes.
    The results show that the higher someone’s sense of purpose, the lower their risk of a stroke. Those with the greatest sense of purpose were 73 percent less likely to suffer a stroke compared to those with the lowest.
    Other research has shown that positive mood can lower levels of the stress hormone Cortisol(荷尔蒙皮质醇), also【C8】______in stroke.
    "This is significant as we have a(n) 【C9】______population and it helps show what behaviours prevent people from getting ill," says Cary Cooper, professor of health psychology at Lancaster University. "Maybe【C10】______is not good for some. "
A)accounted I)implicated
B)ageing J)optimism
C)ambition K)outstanding
D)damaging L)pursuing
E)decreasing M)retirement
F)dramatically N)searched
G)effect O)tracked
H)gradually
【C7】
选项
答案O
解析 空格位于be动词之后，且句中谓语部分不完整，故应填入动词过去分词形式构成被动语态。根据下文for four to five years和completed psychological tests可知人们被跟踪调查，故空格处应填入tracked“追踪，跟踪”。
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