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 ______（1）over a 10-year follow-up（随访） period than older people with______（2）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______（3） rely on their children and other relatives ，having a large network of relatives was not associated with longer life，according______ （4） Giles and her colleagues."Of course， that is not to say that social networks______ （5） children and other relatives
　　are not important in many other ways，" Giles said.Study after study has shown that elderly people who______ （6） connected with lots of people tend to live longer lives.______（7）， few studies have examined whether different types of relationships - with friends ， partners ， children
　　and______ （8） relatives - have different effects on longevity（长寿）。Giles's team set out to examine the relationship between various types
　　of social networks and______（9） in a group of almost 1 ，500 Australians who were at least 70 years______（10）。 Volunteers answered______（11）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 ，______（12） sex， age， health and smoking status.What the study showed was______（13） older people who reported better social networks of friends were______（14） 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______（15） effect on survival in the study.
　　1 A live B die C work D stay
　　2 A stronger B larger C newer D poorer
　　3 A which B whom C those D who
　　4 A at B to C on D by
　　5 A by B on C of D in
　　6 A is B are C was D were
　　7 A However B Once C Further D Moreover
　　8 A older B richer C some D other
　　9 A loneliness B longevity C activity D happiness
　　10 A big B long C old D ago
　　11 A doubts B questions C studies D tests
　　12 A taking B including C accepting D offering
　　13 A if B when C this D that
　　14 A less B more C very D most
　　15 A each B every C an D all

　　【参考答案】BDDBC BADBC BBDBC