题目内容：
Friends May Be Key to Living Longer Looking for the secret of a long life? Look closely at your friends. New research suggests that having a strong network of friends helps people live longer."Older people with better social networks of friends were less likely to ______ (51)over a 10-year follow-up (随访) period than older people with (52) friends networks," Lynne C. Giles of Flinders University in Australia told Reuters Health.
But in what may come as a surprising finding to older people______ (53) rely on their children and other relatives, having a large network of relatives was not associated with longer life, according. ______ (54) Giles and her colleagues.
"Of course, that is not to say that social networks______ (55) children and other relatives are not important in many other ways," Giles said.
Study after study has shown that elderly people who______ (56) connected with lots of people tend to live longer lives. ______ (57), few studies have examined whether different types of relationships - with friends, partners, children and ______ (58) relatives - have different effects on longevity (长寿).
Giles's team set out to examine the relationship between various types of social networks and (59) in a group of almost 1,500 Australians who were at least 70 years ______ (60). Volunteers answered______ (61) about their social networks and then were followed for 10 years.
The researchers took into account several factors that could have influenced how long a person lived, ______ (62) sex, age, health and smoking status.
What the study showed was______ (63) older people who reported better social networks of friends were______ (64) likely to be alive at the end of the study than people with fewer friends.
But relationships with children and other relatives did not have ______ (65)" effect on survival in the study. A．die
B．live
C．work
D．stay
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