【正确答案】 1、正确答案：I am already a middle-aged man. At middle age, I feel sad to find that my eyesight and memory turn weak, my hair becomes thin and gray, and my mental and physical condition are less fit than when I was young. I often suffer from the indescribable loneliness. The most embarrassed is the lack of friendly warmth and comfort due to the estrangement of old pals. Needless to say, the number of acquaintances increases with one"s age. The older one becomes, the more places one has traveled, the more work experience one has, and the more acquaintances one is supposed to have. But not all acquaintances are friends. We come to know many people either in the way of business or by mere chance—say, having been at the same table at a dinner party. We may be on nodding or hand-shaking terms, call each other "friend" , sometimes write to each other with the salutation of "Dear So-and-So" , etc. All these are, in fact, nothing but civilities of social life, as hypocritical as the polite formula "dunshou"(kowtow)or "baibai"(a hundred greetings)used after the signature in old-fashioned Chinese letter-writing. We may call them social intercourse, far from the genuine friendship.