题目

Friendship can deeply affect the physical and mental health of both men and women. Studies show that people who have no friends or who are lonely, are more likely to die earlier, get sick more often and suffer greater physical wear and tear（折磨）than those who have a support system of friends. Sometimes, family members may be more likely to give you advice or tell you what you don’t want to hear. It may not be as good as a friend who will listen to you and guide you, but support your decisions anyway. The most important elements about friendship are those who suffer support and 求y=(1+2x2)8的导数