写作是新托福考试四项中相对来说比较好容易得分的一项，但是事实证明大部分考生并不能考出满意的成绩，究其原因应该是综合写作失分严重，和出国留学网小编一起来看看托福写作话题之生态类。
生态类话题真题
在TPO 的题目中，最具有代表性的生态类话题分布在TPO 14，TPO 18，TPO 20，TPO 21，TPO 23 和TPO 26，它们分别研究的是：树木回收性砍伐的好处、佛罗里达榧树的保护、大火给森林带来的损害、转基因树的好处、雪松数量减少、斑马贝的入侵。例如（阅读--- 听力）：
TPO 14：回收性砍伐的好处
1. make room for the growth of the new trees---deprive the soil of the nutrients produced during the process of decomposition
2. minimize the danger of insect infestation---some insects are great contributors to the health of the forest
3. provide usable wood by industries and create additional jobs for local people---transportation of these woods is expensive and the jobs provided are temporary
TPO 18：佛罗里达榧树减少的解决方案
tablish Torreya in the same location
with the coolest and dampest microclimate---the microclimate is strongly influenced by either global warming or the drained wetlands
Torreya to an entirely different location---Torreya will threaten other rendangered species
erve Torreya in research center---the research center can not ensure a large and genetically-diverse population of the Torreyatrees， which means the trees are not capableof resisting the disease
TPO 20：Let it burn policy 带来的危害
1. damage the trees as well as the vegetation---there appears to be a biggerdiversity for the plants
g negative effects to the wildlife---small animals like the rabbits and hares are more likely to inhabit in the ideal place
harm to the local tourism， negatively contributing to the economy---only if it happens every year would it be a problem for tourism
从上面的考察点结合阅读与听力的内容，我们给考生们总结了生态类话题的考点设置：
从单词的层面上
物种名称词汇（ 植物）：plant / cedar / plankton / Terroya tree / wild berry / organism / black locust tree
物种名称词汇（动物）：wildlife / insect / beetle / bear / mussel / hare / rabbit / shellfish
涉及栖息地词汇：habitat / dwell / inhabit / habitat / bottom / wetland
生物链涉及词汇：food chain / plankton eater/ predator / parasite / disease / infestation / infest / pest-resistant / resist / dominate / reproduce / germinate / nutrient
关于物种入侵：wipe out / crowd out / be aggressive / invade / invasion / colonize / compete for
表示物种数量的下降：decline / descend / shrink / extinct / endangered / minimize / devastate / destroy
科学技术层面的单词：genetic modification / genetictechnology / genetically –diverse / geneticallymodified / uniform / gene / pesticide
常出现在综合写作阅读和听力部分的考点
生物减少原因：
Environment： temperature / climate change / global warming
Technology： genetically-modified plants /pest-unresistant / uniform in genes
Invasion： compete for nutrient/ infestation / parasite / predator
生物保护方法：
Environment： temperature / climate change / relocation
Technology： research center
防止生物扩散的方法：
Biological introduction： predator
Human activities： capture （financially beneficial） / chemical control （poison / pesticide）
以上的总结并不能完全对应目前新托福综合写作的生态话题考点，更要注意一些新的考点，尤其是TPO 套题中所没有涉及的。
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