【答案解析】参考范文
As can be seen from the bar chart given above, there exists great difference in the average earnings among people with different educational attainment. Roughly people"s average earnings are in proportion to their educational attainment. That is, the higher a person"s degree is, the higher income he or she is likely to get.
Several reasons can be identified to account for this phenomenon. On the one hand, higher degree usually stands for stronger ability; people with higher degree tend to be given higher positions, which will be paid higher salaries. On the other hand, people with educational background above bachelor"s degree are impossible to be replaced by ordinary laborers. It implies that to keep these talents, the company needs to invest more on them.
To sum up, because of the potential advantages that people with higher degree have, they tend to get more rewards than those with lower degree. Only by pursuing a higher educational attainment, can people truly get a long-term income reward. [解析] 本题要求考生根据图表内容就“美国人口的教育水平与收入状况”这一话题进行简述，并对图表反映的现象做出评价。图表来自美国人口普查局发布的一份统计表，描述的是平均收入和受教育程度的关系。显然，受教育程度越高，平均收入就越高，受教育程度与收入情况成正比。行文时可在首段简要描述图表内容，点明图表反映出的主题。之后分析产生这种现象的原因，如高学历通常代表高能力，容易获得高职位，高学历的人才不容易被劳动力取代，从而要求单位付出更多的投资等。最后再次强调学历与收入成正比，鼓励学生求学。