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英语口语教学:灯光正在危害自然环境

发布: 2018-02-07 23:51  来源:未知 编辑:admin 查看: 字体: [ ]

(单词翻译:双击或拖选)

研究者称点亮黑夜的灯光正给人们带来很多问题,不仅使我们对宇宙的观念产生误解,还会对环境有不利影响,也对我们的安全健康一级能源消耗产生影响。

The amount and brightness of light from towns and cities around the world is at such a high level that it is reducing the darkness of night. Once upon a time, when night-time fell, we were plunged into darkness. Things are different, and brighter today. A study published in the journal Science Advances reports that artificial light at night is increasing in most countries worldwide. Scientists say it grew by 2.2 per cent a year between 2012 and 2016. The intrusion of artificial light into our night-time is causing us many problems. The International Dark-Sky Association says it, "is not only impairing our view of the universe, it is adversely affecting our environment, our safety, our energy consumption and our health".

 

Study co-author Franz Holker said artificial light is a threat to our natural environment. He said: "Artificial light is an environmental pollutant that threatens nocturnal animals and affects plants and microorganisms." He added: "[It] has ecological and evolutionary implications for many organisms from bacteria to mammals, including us humans, and may reshape entire social ecological systems." Many environmentalists thought the introduction of LED lights would help the planet. However, cities are using more LED lights because they are cheaper, which is adding to the light pollution. Night-time light decreased in 16 countries, including war-torn nations such as Yemen and Syria.

 

课前热身

1. LIGHT POLLUTION: Students walk around the class and talk to other students about light pollution. Change partners often and share your findings.

2. CHAT: In pairs / groups, talk about these topics or words from the article. What will the article say about them? What can you say about these words and your life?

       brightness / high level / darkness / once upon a time / artificial / worldwide / safety /
       natural / environment / nocturnal / mammals / ecological / LED lights / war-torn

Have a chat about the topics you liked. Change topics and partners frequently.

3. DARKNESS: Students A strongly believe we need to bring the darkness back to our cities at night; Students B strongly believe we need more light.  Change partners again and talk about your conversations.

4. POLLUTION: How bad are these kinds of pollution? How do we deal with them? Complete this table with your partner(s). Change partners often and share what you wrote.

 

How bad is this?

How do we deal with it?

Light pollution

 

 

Noise pollution

 

 

Water pollution

 

 

Air pollution

 

 

Radioactive pollution

 

 

Soil pollution

 

 


 

课后练习

  Paragraph 1

      1. amount a. Preventing success or development; harmful; unfavorable.
      2. plunged b. Suddenly brought into a specified condition or state.
      3. artificial c. The action of putting oneself or something deliberately into a place or situation where one/it is unwelcome or uninvited.
      4. intrusion d. A quantity of something, usually the total of a thing or things in number, size, or value.
      5. impairing e. The using up of a resource.
      6. adversely f. Made or produced by human beings rather than occurring naturally, usually as a copy of something natural.
      7. consumption g. Weakening or damaging something.

  Paragraph 2

      8. threat h. The process by which different kinds of life has developed and diversified from earlier forms of life throughout history.
      9. pollutant i. Done, occurring, or active at night.
      10. nocturnal j. Relating to or concerned with the relation of living organisms to one another and to their physical surroundings.
      11. evolutionary k. A person or thing likely to cause damage or danger.
      12. mammals l. A substance that pollutes, poisons, dirties… something, especially water or the atmosphere.
      13. ecological m. Of a place damaged or destroyed by conflict and fighting.
      14. war-torn n. Warm-blooded animals that have a backbone, hair or fur, milk for their young, and the birth of live young.

 

1. TRUE / FALSE: Read the headline. Guess if a-h below are true (T) or false (F).

  1. The article said levels of brightness were at high levels.     T / F
  2. The article says the study was published in a newspaper.     T / F
  3. Light pollution is impairing our view of the universe.     T / F
  4. Light pollution is adversely affecting our safety.     T / F
  5. The study said artificial light is a danger to night-time animals.     T / F
  6. The study said bacteria are not affected by light pollution.     T / F
  7. LED lights have helped reduce light pollution.     T / F
  8. Light pollution has increased in every country in the world.     T / F
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