题目：The effects of longer life expectancy both on aging individual and on society
本文的Assignment 是问题类的措辞。这个题目是说寿命长对个人和社会有什么影响，其实某种程度上就是问各位年纪大的.人对个人和社会有什么影响。
思路：
1. 对个人的影响
1) 向外看对年轻人
观点：寿命变长larger proportion of elders---render the youth disadvantaged in the workplace
论证：It can be observed that young people might be deprived of their opportunities to develop their abilities as more old people could mean that they have more chances to occupy essential social positions。
内部可以配搭实验法。
A group of researchers in the University of Suzhou conducted a research recently on white-collar workers aging from 25-35 in international companies, whose result revealed that three out five people expressed they could hardly get promoted to managerial posts owing to the large number of senior citizens who held supervisory positions。
2) 向外看对家人
老年人可以活得更久就可以更好地照顾他们的子女甚至是孙儿，对于家庭的幸福和稳定是很有好处的。
观点：Longer life span could contribute to the happiness and stability of a family。
