为了提高
Do you agree or disagree with the following statement? A zoo has no useful purpose. Use specific reasons and examples to explain your answer.
Zoos are often controversial because some people believe they are necessary and some believe they are harmful. If properly managed, I feel that zoos have a lot of value. In fact, I believe zoos are useful in two main ways: educating the general public and advancing scientific research.
Zoos can be wonderfully educational places. They can provide safe, controlled environments to learn about specific animal species. Children can feel safe exploring the world of the chimpanzee there, and adults can learn about and see types of birds they’ve never seen before. Unlike in the wild, there’s no worry of being physically harmed by an animal because they are carefully separated by the zoo’s protective measures.
Zoos are also important for the research opportunities they provide. Research is safer and easier to conduct than in the wild. Scientists can feel secure in the confined and controlled area of the zoo. For example, while conducting a medical experiment in an open field in the wild, scientists have to worry about both the animal they are trying to work with, but also other potentially dangerous animals nearby. In zoos, however, they need only worry about the research subject.
In the wilderness, animals are also much harder to track and monitor. Zoos make observation and research less time-consuming and expensive. Long-term follow-ups are easier too, since even with measures taken to track them, wild animals often are killed or disappear. In zoos, researchers can observe an animal’s entire life span.
Overall, I feel that properly managed zoos provide excellent opportunities for education and research, and are therefore very useful.
满分要素剖析
一、 语言表达
文章在语言表达上以简单平实为主要特点，因此对灵活运用语言的能力要求很高，以避免简单语言的重复使用，从这篇文章的语言中，我们可以学到一些灵活处理常用语汇的方法。
1、In fact, I believe zoos are useful in two main ways: educating the general public and advancing scientific research.在介绍和概述分论点，或者要引出下文分方面的讨论时，可以参考这里的用法，zoos are useful in two main ways, 后面的in what way结构引导出概述的方面。
2、Zoos make observation and research less time-consuming and expensive. Long-term follow-ups are easier too, since even with measures taken to track them, wild animals often are killed or disappear. 第二个句子中隐藏了一个被动语态的take measures to do，表示采取措施。time-consuming表示费时的，这种灵活的组合式的单词，可以根据自己的需要自由组合，这样可以在词汇缺乏的时候用自己的创造力和掌握的造词规律解决无米之炊的苦恼。
二、 逻辑结构
文章从两个角度分三个方面讨论了动物园的优点，开篇提示和概述了下文的讨论要点，接着展开讨论。首先是动物园为人们提供了安全的场所，认识和接触更多的动物，是具有教育性的园地，然后是从动物研究从业者的角度，说明动物园为他们提供了安全的研究场所，并且用对比论证说明了动物园给他们的研究提供了极大的便利。最后总结动物园是一个重要的并且实用的场所，重述自己的观点。
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