参考答案： This chart shows that one’s lifetime earnings are closely linked with one’s physical condition and education. As a rule, the young make more money than the old. People at the age of 20 to 30 are in their prime of life. When they are strong and energetic, they can work more and, as a result, earn more. People at the age of 40 to 50 earn less than those in their twenties and thirties.
It is also illustrated in the chart that the better one is educated, the more his lifetime earnings are. A high school graduate earns more than the one who has less than a high school education, but less than a college graduate. So one’s lifetime earnings are in proportion to one’s education.
In my opinion, in this highly competitive society, I’d rather get good education before I work. If people on the average are satisfied with a Master’s degree, I’d like to be a Doctor’s degree. Then I' 11 be a cut above others in income and in knowledge.