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B
KEY→P5
范畴:人与自然 主题:环保意识 体裁:说明文 难度:★★★★ 建议用时:8分钟 评价:/4
Have you wondered what happens to all the hot water that you use in your home for showers or washing dishes? The water goes into our city's sewage system.
Now imagine using the waste heat and recovered energy to heat and cool buildings. Known as
sewer energy, this unconventional source of energy may be at the forefront of the future clean energy change.
Cities are realizing that wastewater is a valuable source of heat energy. It can be used and processed in treatment plants to power homes up. One report has said that American cities lose about 350 billion kilowatt-hours of waste energy each year—enough to power about 30 million homes up!
As the city of Denver in Colorado begins to take the lead in the project of using sewer energy, many cities are following and employing this eco-friendly source of energy.
Using sewer energy may be a simpler process than you thought. In Denver, work has already started on the construction of a wastewater energy retrieval plant.
A large pit in the new facility contains the main sewer line, through which the wastewater flows at constant temperatures from about 55 °F to 75 °F. A large heat pump will transfer the heat from the wastewater to a clean-water loop that is pumped to buildings around the city. This recovered energy can be used to heat water and indoor spaces in buildings.
Since the sewage is always kept at a fairly constant temperature, much like the energy from the earth used by geothermal(地热的) systems, it takes much less energy to heat the water than cold water. This eco-friendly method also makes use of wastewater that would otherwise do harm to local wildlife if it were released directly into river systems.
However, there are also some problems. Such a system functions best when used in districts that have central heating and cooling systems. Experts say that careful planning is necessary when deciding how to implement the sewer recovery system.
Using energy from wastewater is certainly a special method of powering homes up, and in just a few years, it may prove to be one of the key players in the energy industry.
(
A. Powering homes up for free.
B. Offering homes hot water.
C. Trying to clean wastewater.
D. Using wastewater to power homes up.
(
A. Paragraph 5.
B. Paragraph 6.
C. Paragraph 7.
D. Paragraph 8.
(
A. It's not easy to use energy from wastewater.
B. Energy from wastewater will be widely used.
C. Most homes are using energy from wastewater.
D. Few homes would like energy from wastewater.
(
A. Future life.
B. Sewer energy.
C. The heating system.
D. The city of Denver.
KEY→P5
范畴:人与自然 主题:环保意识 体裁:说明文 难度:★★★★ 建议用时:8分钟 评价:/4
Have you wondered what happens to all the hot water that you use in your home for showers or washing dishes? The water goes into our city's sewage system.
Now imagine using the waste heat and recovered energy to heat and cool buildings. Known as
sewer energy, this unconventional source of energy may be at the forefront of the future clean energy change.
Cities are realizing that wastewater is a valuable source of heat energy. It can be used and processed in treatment plants to power homes up. One report has said that American cities lose about 350 billion kilowatt-hours of waste energy each year—enough to power about 30 million homes up!
As the city of Denver in Colorado begins to take the lead in the project of using sewer energy, many cities are following and employing this eco-friendly source of energy.
Using sewer energy may be a simpler process than you thought. In Denver, work has already started on the construction of a wastewater energy retrieval plant.
A large pit in the new facility contains the main sewer line, through which the wastewater flows at constant temperatures from about 55 °F to 75 °F. A large heat pump will transfer the heat from the wastewater to a clean-water loop that is pumped to buildings around the city. This recovered energy can be used to heat water and indoor spaces in buildings.
Since the sewage is always kept at a fairly constant temperature, much like the energy from the earth used by geothermal(地热的) systems, it takes much less energy to heat the water than cold water. This eco-friendly method also makes use of wastewater that would otherwise do harm to local wildlife if it were released directly into river systems.
However, there are also some problems. Such a system functions best when used in districts that have central heating and cooling systems. Experts say that careful planning is necessary when deciding how to implement the sewer recovery system.
Using energy from wastewater is certainly a special method of powering homes up, and in just a few years, it may prove to be one of the key players in the energy industry.
(
D
)1. What does Denver in Colorado take the lead in?A. Powering homes up for free.
B. Offering homes hot water.
C. Trying to clean wastewater.
D. Using wastewater to power homes up.
(
C
)2. Which paragraph mainly talks about the advantage of using wastewater?A. Paragraph 5.
B. Paragraph 6.
C. Paragraph 7.
D. Paragraph 8.
(
B
)3. What can we guess from the last paragraph?A. It's not easy to use energy from wastewater.
B. Energy from wastewater will be widely used.
C. Most homes are using energy from wastewater.
D. Few homes would like energy from wastewater.
(
B
)4. What is the passage mainly about?A. Future life.
B. Sewer energy.
C. The heating system.
D. The city of Denver.
答案
B
你知道家中用于淋浴或洗碗的所有热水都去哪里了吗？这些废水会进入城市污水系统，待处理后为家庭供电。美国科罗拉多州丹佛市在下水道能源项目中处于领先地位，许多城市都在效仿并应用这种环保能源。
1. D 细节理解题。由第四段“As the city of Denver in Colorado begins to take the lead in the project of using sewer energy ...”可知，丹佛市在使用下水道能源方面处于领先地位。
2. C 段落大意题。第七段提及加热这些废水需要的能量比加热冷水少得多，这种环保方法还利用了废水，保护了环境。由此可知，第七段主要谈论了利用废水的好处。
3. B 推理判断题。由最后一段中“and in just a few years, it may prove to be one of the key players in the energy industry”可推知，废水转换的能源将被广泛应用。
4. B 主旨大意题。通读全文可知，本文主要介绍的是下水道能源。
你知道家中用于淋浴或洗碗的所有热水都去哪里了吗？这些废水会进入城市污水系统，待处理后为家庭供电。美国科罗拉多州丹佛市在下水道能源项目中处于领先地位，许多城市都在效仿并应用这种环保能源。
1. D 细节理解题。由第四段“As the city of Denver in Colorado begins to take the lead in the project of using sewer energy ...”可知，丹佛市在使用下水道能源方面处于领先地位。
2. C 段落大意题。第七段提及加热这些废水需要的能量比加热冷水少得多，这种环保方法还利用了废水，保护了环境。由此可知，第七段主要谈论了利用废水的好处。
3. B 推理判断题。由最后一段中“and in just a few years, it may prove to be one of the key players in the energy industry”可推知，废水转换的能源将被广泛应用。
4. B 主旨大意题。通读全文可知，本文主要介绍的是下水道能源。
解析
【分析】本题为英语阅读理解题，围绕“下水道能源（sewer energy）”这一环保能源展开，包含细节理解、段落大意、推理判断、主旨大意四类题型。解题思路为：先通读全文把握主旨，再针对各题题干关键词定位原文对应内容，逐一分析选项的正误，选出符合原文的答案。
【解析】1. 细节理解题：根据题干关键词“Denver”定位至第四段“As the city of Denver in Colorado begins to take the lead in the project of using sewer energy...”可知，丹佛市在使用下水道能源项目上处于领先地位，对应选项D。
2. 段落大意题：第七段主要介绍了利用废水的优势，包括废水温度恒定加热耗能少、环保不危害野生动物，对应选项C。
3. 推理判断题：最后一段提到“in just a few years, it may prove to be one of the key players in the energy industry”，可推断废水能源将被广泛应用，对应选项B。
4. 主旨大意题：通读全文可知，文章主要介绍了下水道能源的概念、应用、优势及前景，核心是sewer energy，对应选项B。
【答案】1.D 2.C 3.B 4.B
【知识点】英语阅读理解、细节理解题、主旨大意题
【点评】本文是一篇关于环保能源的说明文，考查学生对文章细节、段落大意、主旨及推理判断的能力，需学生具备快速定位原文和分析选项的能力。
【难度系数】0.4
【解析】1. 细节理解题：根据题干关键词“Denver”定位至第四段“As the city of Denver in Colorado begins to take the lead in the project of using sewer energy...”可知，丹佛市在使用下水道能源项目上处于领先地位，对应选项D。
2. 段落大意题：第七段主要介绍了利用废水的优势，包括废水温度恒定加热耗能少、环保不危害野生动物，对应选项C。
3. 推理判断题：最后一段提到“in just a few years, it may prove to be one of the key players in the energy industry”，可推断废水能源将被广泛应用，对应选项B。
4. 主旨大意题：通读全文可知，文章主要介绍了下水道能源的概念、应用、优势及前景，核心是sewer energy，对应选项B。
【答案】1.D 2.C 3.B 4.B
【知识点】英语阅读理解、细节理解题、主旨大意题
【点评】本文是一篇关于环保能源的说明文，考查学生对文章细节、段落大意、主旨及推理判断的能力，需学生具备快速定位原文和分析选项的能力。
【难度系数】0.4
