题目内容：
Studies show that the key to happiness is having one close relationship and a network offriends.Our social connections make us healthier and more resilient to stress.Maintaining long
lasting,healthy friendships is worth the effort!
参考答案：
选择题：Studies show that the key to happiness is having o
- 题目分类：大学英语1
- 题目类型：选择题
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friends.Our social connections make us healthier and more resilient to stress.Maintaining long
lasting,healthy friendships is worth the effort!