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这种类型的文章主要针对一些实际的问题分析其原因和后果，最后提出解决的措施。一般情况下三段的分布为：第一段描述内容，第二段分析问题所在，第三段提出解决方案。 人口增长类 模板1： The picture depicts a scene in which . The scene is presented in an artistic and ironic manner. Crowds of people are crammed in . Further examination reveals that . Apparently, the picture symbolizes that humans, with such a huge population, may one day suffer from the exhaustion of earth resources. Take for example. Given the fact that , we find that . To make it worse, . If the conflict between population boom and shortage of resources is not properly controlled, we have every reason to hold a pessimistic perspective towards humans future on Earth. Perhaps eventually we would face the situation suggested by the picture, that is, . Accordingly, I strongly recommend that the whole globe launch aggressive programs to address this fatal contradiction. | 
