TOEFL TPO 59 Speaking Task 4 Sample: Using the points from the talk, describe the two theories that explain the extinction of the dinosaur.

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Using the points from the talk, describe the two theories that explain the extinction of the dinosaur.

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1.子项得分

交付 (Delivery): 3
语言使用 (Language Use): 3
话题发展 (Topic Development): 3

2.预估分数

总分: 23

3.表达回答中的发音大部分清晰，但在某些地方可能需要更好地控制语速和停顿。建议在练习时注意语速的一致性，以及在适当的地方停顿。同时，注意纠正发音错误，例如将 "aerostroid" 改为 "asteroid"。

4.话题发展回答内容基本上是连贯和组织良好的，但可以通过更清晰地连接观点和提供更多支持或例子来进一步改进。例如，在描述第一个理论时，可以更详细地解释植物、食草动物和食肉动物之间的关系。在描述第二个理论时，可以提到恐龙是爬行动物，并解释温度对恐龙蛋性别的影响。总之，尝试在回答中提供更多详细信息和例子，以使内容更丰富。

5.语言使用

Original: In the lecture, the professor talks about two theories of dinosaur extinction. The first one is the lack of food. The dust caused by ~~aerostroid~~ asteroid (发音错误，应为 "asteroid") blocked the sun ray and so many plants died so that dinosaurs ate plants died and dinosaurs ate dinosaurs also died. And the second one is because of the increase of temperature. The heat was trapped by carbon dioxide and the warmer temperature is, the warmer the egg will be. So there will be more males than females and the amount of eggs produced would decrease thus and finally dinosaurs went extinct.

Revised (140 words): In the lecture, the professor discusses two theories explaining dinosaur extinction. The first theory attributes their extinction to a lack of food. Dust created by an asteroid impact blocked sunlight, causing many plants to die. Consequently, herbivorous dinosaurs that relied on these plants for sustenance also perished, followed by carnivorous dinosaurs that fed on herbivores. The second theory suggests that an increase in Earth's temperature led to their demise. Carbon dioxide trapped heat within our atmosphere, resulting in warmer temperatures and subsequently warmer eggs. This temperature change caused a higher ratio of male to female offspring, leading to a decrease in egg production and ultimately, the extinction of dinosaurs.

6.思维导图

Dinosaur Extinction Theories
- Theory 1: Lack of Food
  - Asteroid impact
  - Blocked sunlight
  - Plant death
  - Herbivore and carnivore extinction
- Theory 2: Increased Temperature
  - Carbon dioxide trapping heat
  - Warmer eggs
  - Higher male to female ratio
  - Decreased egg production
  - Extinction

7.关键词

Words	Phonetic Symbols	Parts of Speech	English Definitions	Simplified Chinese Translations	Sample Sentences
extinction	/ɪkˈstɪŋkʃən/	noun	The state or process of being or becoming extinct.	灭绝	The extinction of dinosaurs remains a fascinating topic for scientists and the general public alike.
asteroid	/ˈæstəˌrɔɪd/	noun	A small rocky body orbiting the sun.	小行星	An asteroid impact is believed to have contributed to the extinction of dinosaurs.
herbivore	/ˈhɜrbɪvɔr/	noun	An animal that feeds on plants.	食草动物	Herbivores, such as Triceratops, were greatly affected by the decline in plant life during that time.
carnivore	/ˈkɑrnɪvɔr/	noun	An animal that feeds on other animals' flesh.	食肉动物	Carnivores, like the Tyrannosaurus rex, faced extinction as their prey, the herbivores, died out.
carbon dioxide	/ˈkɑrbən daɪˈɒksaɪd/	noun	A colorless, odorless gas produced by burning carbon and organic compounds and by respiration.	二氧化碳	The increase in carbon dioxide levels in the atmosphere may have led to warmer temperatures and the extinction of dinosaurs.