Aristotle defined a friend as "a single soul dwelling in two bodies". How many friends we have, and how easily we make, maintain and lose them, has a significant impact on our emotional well-being. It's no surprise, 1, that friends can improve just about every aspect of our life. Friends can protect us from the 2of bereavement (丧失亲人) or divorce. They don't even have to be great friends-some of the positive effect is 3down to the company: have a pint with a mate and you're by definition not socially 4. "There are friends you're just more 5with. Others may be more interesting, but they may be more offended. Really good friends don't take offence. Friendships can end because they stop being equal. You may take different 6, have different experiences, which make it harder to maintain a friendship." says educational psychologist Karen Majors. We first recognise the importance of friends in childhood. While some of us may retain a few childhood friends, the biggest opportunity for friendship comes in higher education. A study of long-term friendships found that friendships formed during college years stayed close 20 years later, if they scored highly in closeness as well as 7to begin with. "At college you can 8close friendships because you're in such close 9for sustained periods," says Glenn Sparks, Purdue's professor of communication. "These relationships are rare and hard to 10; they're very unusual outside family relationships.A) proximity I) compromisingB) rather J) comfortableC) routes K) replicateD) then L) simplyE) cultivate M) isolatedF) aftershocks N) communicationG) preferable O) possibility H) connected