TOEFL TPO -1 Writing Task 1 Sample: Summarize the point made in the lecture and explain how the speaker cast doubt on specific points made in the reading passage.
legacy_task_page.hero_subtitle
legacy_task_page.sample_count
legacy_task_page.legacy_notice_title
legacy_task_page.legacy_notice_body
legacy_task_page.task_overview_title
legacy_task_page.reading_passage
Sea otters are a small mammal that lives in the waters along North America's west coast from California to Alaska. A few years ago some of the sea otter populations off of the Alaskan coast started to decline rapidly and raised several concerns because of their important role in the coastal ecosystem. Experts began investigating and came up with two possible explanations. One explanation was environmental pollution and the second was attacks by predators. At first it seemed as if the pollution was the most likely cause for the population decline. One reason pollution was more likely was because of the known pollution sources along the Alaskan coast such as oil rigs. Also water samples taken in the area showed increased levels of chemicals that could decrease the otters' immune systems and indirectly result in their deaths. Another thing that pointed to pollution as the culprit was the decline of other sea mammals such as seals in the same areas. This indicated that whatever was affecting the otters was also affecting the other sea mammals. Environmental pollution usually affects an entire ecosystem instead of just one species. Only predators that occurred in a large area, such as orcas (a large predatory whale), could cause the same effect, but they usually hunt larger prey. Finally, scientists believed the pollution hypothesis would also explain the uneven pattern of otter decline. In some Alaskan locations the otter population declined greatly while other populations remained stable. Some experts suggested this could be explained by ocean currents, or other environmental factor, might have created uneven concentrations of pollutants along the coast.
legacy_task_page.question
Summarize the point made in the lecture and explain how the speaker cast doubt on specific points made in the reading passage.
legacy_task_page.user_samples_title
task_page.user_sample
The lecturer argues that predators are the most possible reason for the intense decrease in sea otters. There are two factors contributing to his point. To begin with, while we have witnessed a huge decline in population of sea otters, dead body can hardly be found. The only explanation for this is that the death is caused by predators, for the body are soon eaten. Additionally, in the areas that have the most serious sea otters declinging problems, the population of whales also drop a lot due to the human whale-hunting. And whales are the original most important food source for orcas, a type of predators that occur on large scale. So it is highly possible that orcas will switch to other smaller sea mammals such as sea otters, which consists with deline of various sea mammals mentioned in the article. Last but not least, the predator hypothesis can also explain the uneven pattern of sea otter decline. Rocky shallow sea areas are hard for predators to approach, leading to the fact that sea otter population there remains stable. To sum up, though the pollution hypothesis can explain most of the facts we observed, but pradators hypothesis can better regenerate all the phenomenon appears in this case.
task_page.evaluation_result
1.子项得分 任务完成度: 4 组织: 3 连贯与衔接: 3 语言使用: 3
2.预估分数
22. 3.任务完成度
这篇文章在任务完成度方面表现较好，但仍有改进的空间。首先，文章成功地总结了听力材料中的观点，并对阅读材料中的观点提出了质疑。然而，文章在解释听力材料如何对阅读材料产生怀疑方面略显简单。为了提高任务完成度，建议作者更详细地说明听力材料是如何反驳阅读材料中的论点的。
示例1： 原文：The only explanation for this is that the death is caused by predators, for the body are soon eaten. 修改后：The lecturer explains that if pollution were the cause of the otters' deaths, their bodies would wash up on shore. However, since few dead otters have been found, it is more likely that predators are responsible for their decline, as they would consume the bodies immediately.
示例2： 原文：So it is highly possible that orcas will switch to other smaller sea mammals such as sea otters, which consists with deline of various sea mammals mentioned in the article. 修改后：The professor argues that due to the decline in whale populations caused by human hunting, orcas have had to adapt their diet and target smaller marine mammals like sea otters. This shift in predation could explain the simultaneous decline of multiple marine mammal species mentioned in the reading passage.
4.文章结构与组织 在文章结构与组织方面，这篇文章有待提高。虽然文章包含了引言、正文和结论，但部分段落的主题不够明确，缺乏恰当的过渡。为了改善文章的结构和组织，建议作者在每个段落中明确表达一个主要观点，并使用过渡词或短语来连接不同的观点和段落。
示例1： 原文：To begin with, while we have witnessed a huge decline in population of sea otters, dead body can hardly be found. 修改后：Firstly, the scarcity of dead sea otters found on the shorelines contradicts the pollution hypothesis.
示例2： 原文：Last but not least, the predator hypothesis can also explain the uneven pattern of sea otter decline. 修改后：Lastly, the uneven pattern of sea otter decline can be better explained by predation rather than pollution.
5. 语法批改
The lecturer argues that predators are the most possible reason for the intense decrease in sea otters. There are two factors contributing to his point.
To begin with, while we have witnessed a huge decline in population of sea otters, dead body can hardly be found. The only explanation for this is that the death is caused by predators, for the body areis(Detects potentially wrong usage of "are") soon eaten.
Additionally, in the areas that have the most serious sea otters declingingdeclining(misspelling) problems, the population of whales also drop a lot due to the human whale-hunting. And whales are the original most important food source for orcas, a type of predators that occur on large scale. So it is highly possible that orcas will switch to other smaller sea mammals such as sea otters, which consists with delinedecline(misspelling) of various sea mammals mentioned in the article.
Last but not least, the predator hypothesis can also explain the uneven pattern of sea otter decline. Rocky shallow sea areas are hard for predators to approach, leading to the fact that sea otter population there remains stable.
To sum up, though the pollution hypothesis can explain most of the facts we observed, but pradatorspredators(misspelling) hypothesis can better regenerate all the phenomenon appears in this case.
Section Title: 6.文章修订
The lecturer contends that predation is the most plausible cause for the significant decline in sea otter populations, providing several reasons to support this argument. Firstly, despite the substantial decrease in sea otter numbers, few carcasses have been discovered. This observation suggests that predators are responsible for their deaths, as the bodies would be consumed promptly.
Furthermore, in areas where sea otter populations have experienced the most severe declines, whale populations have also diminished considerably due to human hunting activities. Whales serve as a primary food source for orcas, a large-scale predator species. Consequently, it is highly probable that orcas have shifted their dietary preferences to smaller marine mammals such as sea otters, which aligns with the decline of various marine mammal species mentioned in the article.
Lastly, the predation hypothesis can also account for the uneven pattern of sea otter population decline. Rocky shallow coastal regions are difficult for predators like orcas to access, resulting in stable sea otter populations within these areas.
In conclusion, while the pollution hypothesis may explain several observed phenomena related to declining sea otter populations, the predation hypothesis offers a more comprehensive explanation for all observed occurrences in this case. (199 words)
Revised essay with explanations inline:
The lecturer argues contends that predation is the most plausible cause (Changed "possible" to "plausible" for better word choice) for the significant decline (Changed "intense decrease" to "significant decline" for better word choice) in sea otter populations, providing several reasons to support this argument. Firstly, despite the substantial decrease (Changed "huge decline" to "substantial decrease" for better word choice) in sea otter numbers, few carcasses have been discovered. This observation suggests that predators are responsible for their deaths, as the bodies would be consumed promptly.
Furthermore, in areas where sea otter populations have experienced the most possible reason for the intense decrease in sea otters. There are two factors contributing to his point. ¶ To begin with, while we severe declines (Changed "declinging problems" to "severe declines" for clarity and better word choice), whale populations have witnessed also diminished considerably due to human hunting activities. Whales serve as a huge decline in population of sea otters, dead body can hardly be found. The only explanation for this is that the death is caused by predators, for the body are soon eaten. ¶ Additionally, in the areas that have the most serious sea otters declinging problems, the population of whales also drop a lot due to the human whale-hunting. And whales are the original most important primary food source for orcas, a type of predators that occur on large scale. So large-scale predator species. Consequently, it is highly possible probable that orcas will switch have shifted their dietary preferences (Changed "switched to other smaller sea mammals" to "shifted their dietary preferences" for better phrasing) to smaller marine mammals such as sea otters, which consists aligns with deline the decline of various sea mammals marine mammal species mentioned in the article.
Last but not least, the predator Lastly, the predation hypothesis can also explain account for the uneven pattern of sea otter population decline. Rocky shallow sea areas coastal regions are hard difficult for predators to approach, leading to the fact that sea otter population there remains stable. like orcas to access (Changed "hard for predators to approach" to "difficult for predators like orcas to access" for clarity and better phrasing), resulting in stable sea otter populations within these areas.
To sum up, though In conclusion, while the pollution hypothesis can may explain most of the facts we observed, but pradators several observed phenomena related to declining sea otter populations, the predation hypothesis can better offers a more comprehensive explanation (Changed "better regenerate all the phenomenon appears in this case." to "offers a more comprehensive explanation") for all observed occurrences in this case.
8. Mind Map
- Introduction
- Decline in sea otter populations
- Predation hypothesis
- Point 1: Few carcasses found
- Predators consuming bodies
- Point 2: Whale population decline and orca dietary shift
- Human hunting activities
- Orcas targeting smaller marine mammals (e.g., sea otters)
- Point 3: Uneven pattern of sea otter population decline
- Rocky shallow coastal regions
- Difficult access for predators like orcas
- Conclusion
- Predation hypothesis more comprehensive than pollution hypothesis
9. Keywords
| Word | Phonetic Symbol | Part of Speech | English Definition | Simplified Chinese Translation | Sample Sentence |
|---|---|---|---|---|---|
| predation | /prɪˈdeɪʃən/ | noun | the act of one organism killing another for food | 捕食 | The decline in sea otter populations is likely due to increased predation. |
| plausible | /ˈplɔːzəbl/ | adjective | reasonable or probable | 合理的，似乎有道理的 | The lecturer presented a plausible explanation for the observed phenomenon. |
| carcass | /ˈkɑːrkəs/ | noun | the dead body of an animal | 动物尸体 | Few carcasses have been discovered, suggesting that predators are responsible for their deaths. |
| substantial | /səbˈstænʃəl/ | adjective | considerable in quantity, size, or worth | 大量的，实质的 | Despite the substantial decrease in sea otter numbers, few carcasses have been found. |
| diminished | /dɪˈmɪnɪʃt/ | adjective | made smaller or less | 减少的，减小的 | Whale populations have also diminished considerably due to human hunting activities. |
| dietary | /ˈdaɪətəri/ | adjective | related to a person's or animal's diet | 饮食的 | Orcas have shifted their dietary preferences to smaller marine mammals such as sea otters. |
| preference | /prɪˈfərəns/ | noun | a greater liking for one alternative over others | 偏爱，优先选择 | The decline of various marine mammal species aligns with the orcas' change in dietary preference. |
| hypothesis | /haɪˈpɒθəsɪs/ | noun | a proposed explanation made on limited evidence | 假设，假说 | The predation hypothesis offers a more comprehensive explanation for the observed occurrences. |
| uneven | /ʌnˈiːvən/ | adjective | not regular, consistent, or equal | 不均匀的，不一致的 | The predation hypothesis can account for the uneven pattern of sea otter population decline. |
| comprehensive | /ˌkɒmprɪˈhensɪv/ | adjective | including all aspects of something; complete _ | 全面的，综合性的_ | The predation hypothesis provides a more comprehensive explanation than the pollution hypothesis. |
legacy_task_page.current_toefl_title
legacy_task_page.current_toefl_desc
Rooting for Your Goal Score Today!
With LingoLeap, an expert in English exams
Get to Your Dream Score Faster