第6部分：完形填空（第51～55题，每题1分，共15分）

　　下面的短文有15处空白，请根据短文内容为每处空白确定一个最佳选项。

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.

　　51 A live B die C work D stay

　　52 A stronger B larger C newer D poorer

　　53 A which B whom C those D who

　　54 A at B to C on D by

　　55 A by B on C of D in

　　56 A is B are C was D were

　　57 A However B Once C Further D Moreover

　　58 A older B richer C some D other

　　59 A loneliness B longevity C activity D happiness

　　60 A big B long C old D ago

　　61 A doubts B questions C studies D tests

　　62 A taking B including C accepting D offering

　　63 A if B when C this D that

　　64 A less B more C very D most

　　65 A each B every C an D all

　　同时按下Crtl键和A键查看答案