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Ⅳ. Unit Task.
After completing this unit, write a research report on people’s efforts to keep ecosystems balanced.
Step 1: Choose a kind of ecosystem.
Step 2: Think about your answers to the questions and make notes to answer them.
1. What is in this ecosystem?
2. What problem does this ecosystem face?
3. How do people protect the ecosystem?
Step 3: Describe the efforts or results.
Step 4: Put all the above into the writing structure. (About 80-100 words)
After completing this unit, write a research report on people’s efforts to keep ecosystems balanced.
Step 1: Choose a kind of ecosystem.
Step 2: Think about your answers to the questions and make notes to answer them.
1. What is in this ecosystem?
2. What problem does this ecosystem face?
3. How do people protect the ecosystem?
Step 3: Describe the efforts or results.
Step 4: Put all the above into the writing structure. (About 80-100 words)
答案
One possible version:
Today I’m going to talk about the wetland, an ecosystem that is important to us all.
You can find wetlands near lakes and rivers. They are home to birds, fish, and plants. However, wetlands are suffering from pollution and land development. People have turned them into farms, so many animals have lost their homes. Luckily, people have played an important role in protecting wetlands. Governments have set up nature reserves. Cleaning rivers is helpful to the survival of wetland animals.
As a result, the population of some water birds has increased. This provides hope for other ecosystems.
Today I’m going to talk about the wetland, an ecosystem that is important to us all.
You can find wetlands near lakes and rivers. They are home to birds, fish, and plants. However, wetlands are suffering from pollution and land development. People have turned them into farms, so many animals have lost their homes. Luckily, people have played an important role in protecting wetlands. Governments have set up nature reserves. Cleaning rivers is helpful to the survival of wetland animals.
As a result, the population of some water birds has increased. This provides hope for other ecosystems.
解析
【分析】首先明确任务是撰写关于人类维持生态平衡努力的研究报告，需遵循指定步骤：第一步选择一个熟悉的生态系统（如湿地，内容易组织）；第二步针对三个核心问题梳理内容：①该生态系统的组成（位置、生物种类）；②面临的问题（如污染、土地开发）；③人类的保护措施；第三步整理保护的努力与结果；第四步按逻辑结构组织成80-100词的报告。
【解析】按照步骤，选取湿地作为研究对象：先介绍湿地的位置（河湖附近）及组成（鸟类、鱼类、植物）；接着说明其面临的问题（污染、被开发为农场导致动物失去家园）；再阐述人类的保护措施（政府设立自然保护区、清理河流）；最后说明结果（水鸟数量增加），将内容整合为连贯的短文，符合词数要求。
【答案】One possible version:
Today I’m going to talk about the wetland, an ecosystem that is important to us all.
You can find wetlands near lakes and rivers. They are home to birds, fish, and plants. However, wetlands are suffering from pollution and land development. People have turned them into farms, so many animals have lost their homes. Luckily, people have played an important role in protecting wetlands. Governments have set up nature reserves. Cleaning rivers is helpful to the survival of wetland animals.
As a result, the population of some water birds has increased. This provides hope for other ecosystems.
【知识点】英语应用文写作、生态保护话题表达
【点评】本题为单元任务写作题，围绕生态保护主题，要求按给定步骤完成，考察学生的信息整合与书面表达能力，需紧扣主题，结构清晰，符合词数要求。
【难度系数】0.5
【解析】按照步骤，选取湿地作为研究对象：先介绍湿地的位置（河湖附近）及组成（鸟类、鱼类、植物）；接着说明其面临的问题（污染、被开发为农场导致动物失去家园）；再阐述人类的保护措施（政府设立自然保护区、清理河流）；最后说明结果（水鸟数量增加），将内容整合为连贯的短文，符合词数要求。
【答案】One possible version:
Today I’m going to talk about the wetland, an ecosystem that is important to us all.
You can find wetlands near lakes and rivers. They are home to birds, fish, and plants. However, wetlands are suffering from pollution and land development. People have turned them into farms, so many animals have lost their homes. Luckily, people have played an important role in protecting wetlands. Governments have set up nature reserves. Cleaning rivers is helpful to the survival of wetland animals.
As a result, the population of some water birds has increased. This provides hope for other ecosystems.
【知识点】英语应用文写作、生态保护话题表达
【点评】本题为单元任务写作题，围绕生态保护主题，要求按给定步骤完成，考察学生的信息整合与书面表达能力，需紧扣主题，结构清晰，符合词数要求。
【难度系数】0.5
