外研版（2019）选择性必修 第二册Unit 5 A delicate world Understanding ideas课件(共15张PPT)
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| 名称 | 外研版（2019）选择性必修 第二册Unit 5 A delicate world Understanding ideas课件(共15张PPT) |  | |
| 格式 | pptx | ||
| 文件大小 | 17.7MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2023-03-13 12:58:03 | ||
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文档简介
(共15张PPT)
Toxic chemical spill in Ohio
On Feb. 3, a train carrying vinyl/ va nl/ chloride/ kl ra d/, a dangerous colorless gas, derailed in East Palestine of Ohio, near the border with Pennsylvania. About 50 cars crushed onto each other. Many of them contained hazardous chemicals including butyl/ bju t l/ acrylate / kr le t/ and vinyl chloride, which were among the flammable liquids that authorities feared could set off a major explosion.
本月3日，一列载有氯乙烯（一种危险的无色气体）的火车在俄亥俄州东巴勒斯坦与宾夕法尼亚州边界附近脱轨。事故现场约有50节车厢挤压在一起。许多车厢载有危险化学品，包括丙烯酸丁酯和氯乙烯，均属当局担忧可能引发重大爆炸的可燃液体。
derail v. 脱轨
hazardous adj. 危险的；有害的
set off 出发；引起；动身；使爆炸
The local residents complaint of trouble breathing, noxious smells, nausea and headaches. There are also reports on deceased wildlife, including at least 3500 confirmed dead fish. “The result was destruction and possible ecological death, immediate and chronic,” said Evaggelos Vallianatos, a historian and an ecopolitical theorist. It is potentially one of the worst environmental disasters in U.S. history.
noxious adj. 有毒的；有害的
deceased adj. 已死的；亡故的
chronic adj. 长期的；慢性的
What is happening to the area according to the satellite images
The size of Aral Sea is shrinking.
The climate change and overuse of water.
Satellite Images of Aral Sea, Central Asia (咸海/中亚地区的咸水湖)
Macquarie Island
麦夸里岛
[m 'kw ri]
MACQUARIE ISLAND:
from Chaos to Conservation
/'ke s/ n.
a state of complete confusion and lack of order
混乱；紊乱
/k ns 've n/ n.
the protection of the natural environment
（对自然环境的）保护
Read for structure
Divide the passage into several parts and find out the main idea of each part.
Part 1
Part 2
Part 3
Para. 1
Para. 2-5
Para. 6
The beauty of the island
The chaos of the island
The conservation of the island
Read for details
Read for details
Read para 2-3 and answer the following questions.
What were brought to the island
What happened after they reached the island
took over…
ate …
attacked …
developed an appetite for ...
multiplied rapidly
ate vegetation
dig holes
soil erosion
Humans’ _______ actions have a _______ effect on ecology.
negative
careless
Read for details
Read para 4-6 and complete the chart.
Humans’____________measures may do greater harm to ecology.
improper
Time purpose(s) measure(s) result(s)
To remove the rabbits.
in the 1970s
A virus was released.
Fewer rabits but fewer birds
in the 1980s
To catch the cats.
Traps and dogs were used.
No cat but more rats and rabbits
after 2006
To remove all the remaining invading species.
Poison and dogs were used.
Pest-free and its ecology is on the road to recovery.
Think & share
What is your understanding of “This intervention is a long, much-delayed ending to a sad story, but we humans owe it to the island to give it a happy ending”
Since it is we humans that are to blame for the ecological problem with the island, we must shoulder the responsibility to make efforts to recover the ecology of it.
Think & share
Do you think it was right ro eradicate the “pests” from the island How could similar situations be avoided in the future
To avoid similar situations in the future, we should protect the local natural ecosystem and be aware of the potential impact that human activities can have on ecosystems.
Toxic chemical spill in Ohio
On Feb. 3, a train carrying vinyl/ va nl/ chloride/ kl ra d/, a dangerous colorless gas, derailed in East Palestine of Ohio, near the border with Pennsylvania. About 50 cars crushed onto each other. Many of them contained hazardous chemicals including butyl/ bju t l/ acrylate / kr le t/ and vinyl chloride, which were among the flammable liquids that authorities feared could set off a major explosion.
本月3日，一列载有氯乙烯（一种危险的无色气体）的火车在俄亥俄州东巴勒斯坦与宾夕法尼亚州边界附近脱轨。事故现场约有50节车厢挤压在一起。许多车厢载有危险化学品，包括丙烯酸丁酯和氯乙烯，均属当局担忧可能引发重大爆炸的可燃液体。
derail v. 脱轨
hazardous adj. 危险的；有害的
set off 出发；引起；动身；使爆炸
The local residents complaint of trouble breathing, noxious smells, nausea and headaches. There are also reports on deceased wildlife, including at least 3500 confirmed dead fish. “The result was destruction and possible ecological death, immediate and chronic,” said Evaggelos Vallianatos, a historian and an ecopolitical theorist. It is potentially one of the worst environmental disasters in U.S. history.
noxious adj. 有毒的；有害的
deceased adj. 已死的；亡故的
chronic adj. 长期的；慢性的
What is happening to the area according to the satellite images
The size of Aral Sea is shrinking.
The climate change and overuse of water.
Satellite Images of Aral Sea, Central Asia (咸海/中亚地区的咸水湖)
Macquarie Island
麦夸里岛
[m 'kw ri]
MACQUARIE ISLAND:
from Chaos to Conservation
/'ke s/ n.
a state of complete confusion and lack of order
混乱；紊乱
/k ns 've n/ n.
the protection of the natural environment
（对自然环境的）保护
Read for structure
Divide the passage into several parts and find out the main idea of each part.
Part 1
Part 2
Part 3
Para. 1
Para. 2-5
Para. 6
The beauty of the island
The chaos of the island
The conservation of the island
Read for details
Read for details
Read para 2-3 and answer the following questions.
What were brought to the island
What happened after they reached the island
took over…
ate …
attacked …
developed an appetite for ...
multiplied rapidly
ate vegetation
dig holes
soil erosion
Humans’ _______ actions have a _______ effect on ecology.
negative
careless
Read for details
Read para 4-6 and complete the chart.
Humans’____________measures may do greater harm to ecology.
improper
Time purpose(s) measure(s) result(s)
To remove the rabbits.
in the 1970s
A virus was released.
Fewer rabits but fewer birds
in the 1980s
To catch the cats.
Traps and dogs were used.
No cat but more rats and rabbits
after 2006
To remove all the remaining invading species.
Poison and dogs were used.
Pest-free and its ecology is on the road to recovery.
Think & share
What is your understanding of “This intervention is a long, much-delayed ending to a sad story, but we humans owe it to the island to give it a happy ending”
Since it is we humans that are to blame for the ecological problem with the island, we must shoulder the responsibility to make efforts to recover the ecology of it.
Think & share
Do you think it was right ro eradicate the “pests” from the island How could similar situations be avoided in the future
To avoid similar situations in the future, we should protect the local natural ecosystem and be aware of the potential impact that human activities can have on ecosystems.