雅思阅读高频词汇（环境类）

雅思阅读文章篇幅长，词汇量大，长难句多，这是很多学生都面临的难题。追根溯源，除了解题技巧之外，扩大词汇量才是有效的解决方法。那么这么多的词汇，我们的问题会是：哪些是重要的高频的单词，生僻的长难单词也需要记吗，该从哪里下手？我们知道雅思阅读文章大多是按话题分类的，比如说教育类，动植物类，环境类，科学实验类。 大可以按话题分类记单词，在平时的阅读中积累同类话题的雅思高频词汇。 这里我将通过几篇剑桥复习资料阅读文章与大分享一些环境类的高频词汇。

1.     tropical rainforest 热带雨林
eg. Adults and children are frequently confronted with statements about the alarming rate of loss of tropical rainforests . （C4T1P1）

2.     indigenous adj.本土的(同义词：native)    habitat n.栖息地
eg. Fewer students responded that rainforests provide plant habitats , and even fewer mentioned the indigenous populations of rainforests.

3.     conservation n.计划护，计划存   conserve v. 计划护
eg. In answer to the final question about the importance of rainforest conservation , the majority of children simply said that we need rainforests to survive.
同义词：protection (protect)   preservation(preserve)
Eg. The second resolution concentrates on the need to preserve the genetic diversity of European forests.(C7T3P3)

4.     destruction n.破坏，毁灭
eg. Only a few of the pupils (6%) mentioned that rainforest destruction may contribute to global warming.

5.     acid rain 酸雨
eg. One misconception, expressed by some 10% of the pupils, was that acid rain is responsible for rainforest destruction.
acidify v.使酸化
soil acidification 土壤酸化

6.     oxygen n.氧气
carbon dioxide 二氧化碳
carbon monoxide 一氧化碳
sulphur dioxide 二氧化硫

7.     degrade v.使退化；使降解；降低身份
eg. Certain irrigation practices degraded soil quality and reduce agricultural productivity.(C7T1P2) （使退化）
degradation n.退化  同义词：deterioration
soil degradation/ deterioration 土壤退化

8.     ecosystem n.生态系统
ecology n.生态学
eg In Europe, it is undoubtedly the mountain ecosystem which has changed most rapidly and is most at risk. (C7T3P3)