托福TPO32口语Task6题目文本及答案解析

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  　　托福TPO32口语task6题目 Listening Part:

  　　Listen to part of a lecture in an Environmental Science class.

  　　(female professor) Roads, paved roads are everywhere and sometimes seem like part of the natural landscape. But, of course, roads are not part of nature and, if fact, road construction can have harmful effects on the environment and seriously impact both animal life and plant life.

  　　One harmful environmental effect of roads is that they contribute to the movement of plant species from one area to another. This causes problem for existing plants, plants already growing in that area because when a new plant species gets into an area where it wasn’t growing before, the new plants compete for resources with existing plant life. For example, this happened in California with a weed called the yellow starthistle. What happened was the starthistle’s seeds got stuck to the tires of cars driving down the road and the seeds were distributed to new areas. This put the starthistle in competition for natural resources, like water, with the original plant life of the area. That made it harder for the native plants to survive.

  　　Also roads, especially major highways, can act as barriers and divide up an animal’s habitat into smaller ones where there is not enough food to support the population. These busy highways, with cars speeding past day and night, act like boundaries that animals are afraid to cross. So they sometimes get shut in on a small piece of land where there isn’t enough food to support them. This is a serious problem for animals that need access to large expanse of land to look for food. For example, there are these foxes called Kit foxes that live in the southwestern United States, They hunt small animals like mice and squirrels which are spread out over large areas of open grasslands. And now, because of these roads, the Kit fox population has declined significantly because now they don’t get enough food.

  　　托福TPO32口语task6题目 Question:

  　　Using the examples of the starthistle and the Kit fox, describe two ways roads can affect the environment.

  　　托福TPO32口语task6题目答案解析:

  　　题目分析

  　　总括：Two ways roads can affect the environment

  　　观点1：Contribute to movement of plant species

  　　例子1：

  　　yellow stathistle

  　　Stuck to tire

  　　Distributed to new area

  　　Complete for water

  　　Hard for native plants to survive

  　　观点2：Become barrier for animals so the can't get enough food

  　　例子2：

  　　Kit fox

  　　Hun mice that are spread out over grassland

  　　Road constructed

  　　Number decreased because they can't get enough food

  　　托福TPO32口语task6题目范文:

  　　There are two ways roads can affect the environment

  　　The first way is that they contribute to movement of plant species,

  　　and new plants compete for resources of other native plants.

  　　For example, when the yellow starthistie is stuck to tires, it would be distributed to a new area where it competes for water, so that if s hard for native plants to survive.

  　　The second way is that they become barrier for animals. Animals are afraid to cross highways, so they’re shut in small areas where they can’t get enough food. This is hard for animals that need food which are spread over a large expansion of land.

  　　For example, kit foxes hunt for mice that are spread out in a large expansion of grassland, When road is constructed, their numbers declined because they can’t get enough food.