[解析]
(1)写作意图题。根据第二段It's generally held that friends are people with whom we choose to develop relationships because we find their personalities agreeable,or similar to our own,and yet experience regularly contradicts this.What is a friend,really?(人们普遍认为,朋友是我们选择与之发展关系的人,因为我们觉得他们的性格令人愉快,或与我们自己的性格相似,但经验往往与此相悖。什么是朋友,真的吗)可知,作者在第一段讲述朋友的故事是为了引出主题:我们并不了解我们的朋友。故选B。
(2)细节理解题。根据第二段friends are people with whom we choose to develop relationships because we find their personalities agreeable,or similar to our own,but experience regularly is opposite to this(朋友是我们选择与之发展关系的人,因为我们觉得他们的性格令人愉快,或与我们自己的性格相似,但经验往往与此相反)可知,朋友之间并非要拥有共同的性格。故选C。
(3)推理判断题。根据最后一段 Perhaps there's something moving about viewing friendship as an agreement to keep each other company,ignore each other's faults and not probe (刨根问底) too deeply in ways that might weaken the friendship.(也许将友谊视为彼此陪伴的协议,忽略对方的缺点,不要过于深入地探究可能会削弱友谊的方式,这一点令人感动。)可知,作者认为朋友之间应该适当保持距离。故选A。