导入单词阅读复述作业欣赏 water pollution air pollution soil pollution
TRANSCRIPT
导入 单词 阅读 复述 作业 欣赏
南海信息技术学校
赵月
娇
Water pollution
Air pollution
Soil pollution
New words:
Area: 地区Cattle: 牛Cause: 原因Limit: 限制Gradually: 逐渐地In place: 在适当的位置Hillside :山腰Blow away: 刮走Power: 动力Mile: 英里
Chemical: 化学物Time and time again: 多次Sight: 视力Lose one’s sight: 失明Shore: 滨;岸Present: 在场的Dirty: 弄脏Tanker: 油船Pour: 倾泻Square: 平方
Listen to the passage and answer the following questions:
1. Why are trees very important?
2. What is the cause of water pollution?
Because trees can hold the soil in place on the hillside.
Waste from factories and cities is the cause of water pollution.
Get the students to read the passage again and finish the following exercises:( )1. The passage points out that many parts of the world with large populations and plenty of crops have become deserts.( )2. Land may become poor if farmers do not limit the numbers of 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 the problem that many parts of the world have become deserts.
T
T
T
F
( )5. Chemicals in the smoke from power stations can travel hundreds of miles in the wind before falling down to the ground in the rain. However, the rain will not do any harm to man.( )6. After a bad accident at a nuclear power station, 50% of the trees in Germany were damaged.( )7. The examples of the accidents in both India and Russia are used by the writer to explain how water is polluted.
F
F
F
Retell the passage:(use the pictures and the sentences to help)
The area of desert is growing.
Retell the passage:
Too many sheep and cattle
All the grass be eaten
Grass never grow again; the land become desert
Retell the passage:
trees be cut downnothing to hold…
soil be washed into…
soil be blown away
Retell the passage:
travel ; fall to the ground in the rain
Chemicals in smoke cause a lot of damage.
Retell the passage:
trees be destroyed fish be killed
Retell the passage:
smoke from factories , power stations and cars
Retell the passage:
I.
II.
Time :
Place :
Results :
Time :
Place :
Results :
1986at a nuclear powerstation in Russia
125,000 die
1984at a factory in the town of Bhopalin India
2500 be killed;many lose sightaccidents
waste from factories and cities
1989
35,000
34,000
10,000
4,800
a sinking oil tanker
1.Copy the new words.
2.Finish workbook exercise 2 and 3.