高二英语 Saving the earth课件

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7. The writer uses the examples of the accidents in both India and Russia to explain how water is polluted.(F)
8. Once oceans are polluted, they are not able to clean themselves.(F)
2. Land may become poor if farmers do not limit their cattle.
3. Good soil is gradually lost these days as trees are being cut down.
4. Air pollution and water pollution are the two causes of problem that many parts of the world have become desert.
safe to eat the fish.
T
E
Lake Baikal, which used to be the cleanest in the world,is
Factories and cities produces a lot of waste.
Waste produced from a chemical factory.
7. The writer uses the examples of the accidents in both India and Russia to explain how water is polluted.
8. Once oceans are polluted, they are not able to clean themselves.
practice
Now you are a reporter from the 21st Century , when you are making a social survey in your home town, you see some factories in your home town are seriously polluting the air and the water. The environment is not well protected. You are going to Interview a government official and write a report about what you see. You are supposed to tell the Importance of stopping the pollution and Protecting the environment. Now do the interview first in pairs and then make an oral report according to the following pictures.
destroyed and fish in the lakes are killed.
W In some places it’s no longer A safe for swimming, nor is it T safe to eat the fish. E Lake Baikal, which used to R be the cleanest in the
Suggestions
Limit the number of the cattle.
Plant more trees and try to protect them.
A lot of things have to be down to reduce pollutionn. New laws should de passed and people should
Causes
Suggestions
Phenomena
Causes
E The area of desert is growing Cattle eat grass. A every year.
R
T Good soil is gradually lost. H
Trees being cut down; strong winds blowing the valuable soil away.
realize how serious the problem is.
Same as above.
The main idea of each passage
Earth: The area of desert is growing and
good soil is gradually lost.
Air: Chemicals in the smoke cause
5. Chemicals in the smoke from power stations can travel hundreds of miles before falling down to the rain.(F)
6. After a bad accident at a nuclear power station, 50%of the trees in Germany were damaged.(F)
a lot of damage and serlace from time
to time.
Water:
Water pollution is caused by man’s waste. The waters of this great lake
have been dirtied and 4800 square km
3. Good soil is gradually lost these days as trees are being cut down.(T)
4. Air pollution and water pollution are the two causes of problem that many parts of the world have become desert.(F)
Air is being polluted.
Factries,power stations
and cars produce a lot of
waste.
A
I
A lot of people died from
There are serious
polluted air in both Russia and accidents that polluted
Saving the earth
Lesson 34 Unit 9 Earth, Air and Water
USA Alska
Lake Baikal
Germany Mediterranean Sea
Russia Dunhuang
ChinaGebi
India
EARTH
AIR
WATER
1. Many parts of the world with large population and plenty of crops have become desert.
A lot of damage has already been done to the earth, including pollution, nuclear waste, radiation and so on. We are also aware that there is only one earth for us. So the idea that everyone should keep in his or her mind is stopping any damage to the world and saving the earth.
of ocean were polluted by oil.
DISCUSSION
(1) What kind of pollution can you think of ?
(2) Why trees are important? (3) What are the causes of water
pollution? (4) What can be done to stop land
1. Many parts of the world with large population and plenty of crops have become desert.(T)
2. Land may become poor if farmers do not limit their cattle.(T)
5. Chemicals in the smoke from power stations can travel hundreds of miles before falling down to the rain.
6. After a bad accident at a nuclear power station, 50%of the trees in Germany were damaged.
Phenomena
E The area of desert is A growing every year. R T Good soil is gradually lost. H
Air is being polluted.
A lot of people died from A polluted air in both Russia I and India. R Trees in the forest are
R India.
the air.
Trees in the forest are
destroyed and fish in the lakes Chemical rain. are killed.
W In some places it’s no longer
A safe for swimming, nor is it
from becoming into desert? (5) What else do we know about the
problems that the earth is facing? (6) What steps should we take to
save the earth?
So everybody should remember:
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