TOEFL Writing Task 1 Sample: Question: Question:Summarize the points made in the lecture, being sure to explain how they cast doubt on the specific theories mentioned in the reading passage.

1.子项得分 任务完成度: 4 组织: 3 连贯性和衔接: 3 语言使用: 3

2.预估分数

22. 3.任务完成度

你的文章在任务完成度方面表现不错，基本上涵盖了阅读和听力材料中的主要观点。但是，你可以更加详细地解释听力中提到的观点以及它们如何对阅读材料产生质疑。此外，尝试更准确地引用听力材料中的例子和数据。

示例1: 原文：When CO2 is close to the ground, it can harm people during people's sleep. 修改：The lecturer mentions that CO2 leaks usually stay close to the ground, posing a risk to people only if they breathe the air close to the ground, such as when sleeping on the ground while camping.

示例2: 原文：This is because the deep underground rocks are rich in methane. 修改：The lecturer explains that some suitable sites for CO2 storage are deep underground layers of rock containing methane, which can be released and collected when CO2 is injected into those rocks.

4.文章结构与组织 文章的结构可以进一步优化。首先，在引言部分简要介绍文章主题，并指出阅读和听力材料之间的关系。其次，在正文部分，确保每个段落都有一个明确的主题句，并使用恰当的过渡词来连接不同段落。最后，在结论部分总结文章的主要观点。

示例1: 原文：The reading claims that storing CO2 into the deep underground rocks is difficult because of some challenges. However, the professor refutes this point by saying that researchers find some ways to solve these problems. 修改：The reading passage presents several challenges related to underground CO2 storage, while the lecture offers solutions to overcome these obstacles.

示例2: 原文：To begin with, the reading asserts that there is no enough room for CO2 storage. 修改：Firstly, the reading passage raises concerns about the lack of sufficient space for CO2 storage.

5. 语法批改

The reading claims that storing CO2 into the deep underground rocks is difficult because of some challenges. However, the professor refutes this point by saying that researchers find some ways to solve these problems.

To begin with, the reading asserts that there is no enough room for CO2 storage. However, the professor contradicts this point by saying that CO2 take large space when it is in gas condition. However, when CO2 get high pressure, it can become a kind of super critical fluid. This characteristic of CO2 makes it possible to be compressed and take less space.

In addition, if CO2 leaks, there is a really goodperfect(Extreme adjectives) chance that high concentrations of CO2 cause to human's health problems. However, the professor (Two consecutive spaces)rebuts this point by saying that scientists can minimize the possibilities of CO2 leak. When CO2 is close to the ground, it can harm people during people's sleep. Scientists can make a kind of monitor devise to monitor the concentration of CO2. Therefore, when CO2 leaks, this device will be able to warn people to run away.

Finally, the reading states that the process of storing CO2 will cost a lot of money. However, the professor contradicts this point by saying that people can use another gas called methane to offset the huge cost. This is because the deep underground rocks are rich in methane. When people inject CO2 into these places, they can also get methane. As a result, people sell methane at a high price because the gas can be used as energy.

Section Title: 6.文章修订

The reading passage argues that storing CO2 underground is challenging due to limited storage space, health risks, and high costs. However, the lecture counters these points by presenting solutions to overcome these challenges.

Firstly, the reading suggests that there may not be enough space for CO2 storage underground. The lecture refutes this by explaining that when CO2 is subjected to high pressure and temperature, it transforms into a supercritical fluid. This transformation allows CO2 to occupy less space, thus reducing the need for extensive storage areas.

Secondly, the reading raises concerns about potential health risks if CO2 leaks from underground storage sites. The lecture counters this by stating that research has shown CO2 leaks usually remain close to the ground, posing a risk only if people breathe air near the ground level. To mitigate this risk, monitoring devices can be installed in areas where CO2 is stored. These devices would sound an alarm when detecting elevated CO2 levels, alerting people to evacuate and avoid breathing air close to the ground.

Lastly, the reading highlights the high costs associated with capturing and storing CO2 underground. In contrast, the lecture explains that some of these costs can be offset by financial benefits derived from methane extraction. Suitable sites for CO2 storage often contain deep underground rock layers rich in methane gas. When injecting CO2 into these rocks, they release methane which can be collected and sold as fuel. Profits from selling methane can partially compensate for the expenses incurred in carbon dioxide storage projects. (255 words)

Revised essay with inline explanations:

The reading claims passage argues that storing CO2 underground is challenging due to limited storage space, health risks, and high costs (rephrased for clarity and cohesion). However, the lecture counters these points by presenting solutions to overcome these challenges (rephrased for clarity).

Firstly, the reading suggests that there may not be enough space for CO2 storage underground. The lecture refutes this by explaining that when CO2 is subjected to high pressure and temperature, it transforms into the a supercritical fluid (clarified the process). This transformation allows CO2 to occupy less space, thus reducing the need for extensive storage areas (added reasoning).

Secondly, the reading raises concerns about potential health risks if CO2 leaks from underground storage sites. The lecture counters this by stating that research has shown CO2 leaks usually remain close to the ground, posing a risk only if people breathe air near the ground level (clarified risk factors). To mitigate this risk, monitoring devices can be installed in areas where CO2 is stored. These devices would sound an alarm when detecting elevated CO2 levels, alerting people to evacuate and avoid breathing air close to the ground (explained solution).

Lastly, the reading highlights the high costs associated with capturing and storing CO2 underground. In contrast, the lecture explains that some of these costs can be offset by financial benefits derived from methane extraction (clarified cost offset). Suitable sites for CO2 storage often contain deep underground rocks is difficult because of some challenges. However, the professor refutes this point by saying that researchers find some ways to solve these problems. ¶ To begin with, the reading asserts that there is no enough room for CO2 storage. However, the professor contradicts this point by saying that CO2 take large space when it is in gas condition. However, when CO2 get high pressure, it can become a kind of super critical fluid. This characteristic of CO2 makes it possible to be compressed and take less space. ¶ In addition, if CO2 leaks, there is a really good chance that high concentrations of CO2 cause to human's health problems. However, the professor rebuts this point by saying that scientists can minimize the possibilities of CO2 leak. When CO2 is close to the ground, it can harm people during people's sleep. Scientists can make a kind of monitor devise to monitor the concentration of CO2. Therefore, when CO2 leaks, this device will be able to warn people to run away. ¶ Finally, the reading states that the process of storing CO2 will cost a lot of money. However, the professor contradicts this point by saying that people can use another gas called methane to offset the huge cost. This is because the deep underground rocks are rock layers rich in methane. methane gas. When people inject injecting CO2 into these places, rocks, they can also get methane. As a result, people sell release methane at a high price because the gas which can be used collected and sold as energy.fuel (explained process). Profits from selling methane can partially compensate for the expenses incurred in carbon dioxide storage projects (concluded with benefits).

8. Mind Map

1. Introduction
   - Reading passage points
   - Lecture counterpoints

2. Limited Storage Space
   - Reading: Not enough space for CO2 storage
   - Lecture: Supercritical fluid transformation reduces space needed

3. Health Risks
   - Reading: CO2 leaks pose health risks
   - Lecture: Monitoring devices and alarms mitigate risks

4. High Costs
   - Reading: Expensive to capture and store CO2 underground
   - Lecture: Methane extraction offsets costs

5. Conclusion
   - Recap of lecture's counterarguments to reading passage points

9. Keywords