the development of life have you heard of any ancient story about the beginning of life?
TRANSCRIPT
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The development of life
Have you heard of any ancient story about the beginning of life?
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Pangu separates the sky from the earth
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The Goddess Nuwa mended the heaven and created human beings
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God created the world in seven days
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the Big Bang
religious or scientificreligious scientific
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According to the title, which of the following words do you think will appear in the reading passage?
Why ?
atmosphere planet mammal independent festival oxygen disappointed harmful religious development custom diet
Listen to the tape and check your guessing.
atmosphere planet mammaloxygen
harmfuldevelopment
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How many parts can this passage be divided into?
What does each part mainly talk about?
Part 1 (Para 1)
Part 2 (Para 2-4)
Water and its importance
The development of lives
Para2-3 lives before humans
Para4 humans
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a cloud of dust a violent solid ball
Detailed reading
Para1
1.What was important for the beginning of life on the earth? And how did it come into being?
Water
The explosion of the earth produced water vapour, which turned into water when the earth cooled down.
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exploded with fire and rock
produced water vapour and gases
the earth’s atmosphere
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Water appeared – important for the beginning of life on the earth
Why ?
Because it allowed the earth to dissolve harmful gases into the oceans and seas.
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1.Why was the earth different from other planets?
A it produced a lot of heat. B.The water remained.
C Water disappeared. D.It was the oldest planet.
2.Why was life able to develop on the earth but not on other planets?
A The earth had a solid shape.
B. The earth did not have harmful gases in its atmosphere.
C The water stayed on the earth but not on other planets.
D.The earth was not too hot and not too cold.
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Over of the earth’s surface is covered by water
70%
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• Para 2&3 Find out the lives from this part.
1 small plants in the water2 shellfish and other fish
3 green plants on land
4 land animals
insects
amphibians
5 reptiles
6 dinosaurs
7 mammals
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Small plants in water
Shellfish and all sorts of fish
Green plants on land
____________ and ____ the oceans and seas with _________.
multiplied filled oxygen
enco
urag
ed
many millions years later
appeared
Taking from the atmosphere and filling the with oxygen life to develop.
carbon dioxideair helped
laterland animals
Insects (on land)
Amphibians(on land and in water)
enco
urag
ed
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The plants forests grew into
reptilesproduced young by
laying eggsdinosaurs
disappeared
mammals
produced young fromWithin their bodies
humans
important
advanced
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In some films and stories, we can see dinosaurs and people together. Is it right? Why?
Because dinosaurs died out long before human beings developed on the earth.
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1. Are humans the cleverest animals? Why?
2. Are they taking care of the earth well? Why?
Para4
1. Because they developed new methods of growing food, hunting and moving around.
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2. Because they are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space.
The earth may become too hot for the lives on it.
greenhouse effect
global warming
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If the earth became much warmer, what result would it bring about?
It would affect human health, ecological systems .
It would do harm to crops and food supply would be lessened.
It would lead to the melting of the ice and drown some cities and residents.
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Pair work
The habitat of penguins in Antarctica is being affected by the greenhouse effect. One clever penguin called Dou dou is turning to Ban ki-moon, Secretary- General of the UN for help.
S: Hello, Dou dou!
D: Hello, Mr. Secretary- General!
S: Welcome to the UN, and what can I do for you, my baby?
……
Work in pairs(one acts as Dou dou and the other acts as Mr. Secretary-General) to make a dialogue. ( the trouble, the measures, the efforts, the future ……)
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Discussion
Do you think life will continue on the earth for millions of years to come? Why?
I think that it’s impossible for life to continue / pollute / destroy the earth…
I don’t’ think so / in my opinion/ I believe / as long as / take care of / protect the earth / life may continue…
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solar energy plant trees
recycle rubbish
prevent desertification
save water purify air
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Homework
1.Write your opinions down into a short passage
2.Finish Ex 1-4(Discovering useful words and expressions) on P27
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