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新课标高中英语选修6第四单元阅读课件
A greenhouse is used
for_g_r_o_w_i_n_g__p_Rla__ne_tas, d & answer.
especially during _co_l_d_2020w/4/1eather.
How does a greenhouse work?
_tr_a_p__s the heat from the sun
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3. What is 'greenhouse effect'? It is a natural phenomenon which happens when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapour, trap heat from the sun and therefore warm the earth.
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Para.3 1.How do human affect the earth warming up?
It is due to the burning of fossil fuels like coal, natural gas and oil to produce energy. 2. What is greenhouse gases? Greenhouse gases are some byproducts of the process of producing energy, the most important one of which is carbon dioxide.
A.Newspaper B. Novel ☺C. Magazine
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Skimming ★ ★ Skim the first paragraph:
Who wrote the article? Sophie Armstrong
What is the name of the magazine?
Earth Care
Tip: In English, some nouns begin with a capital letter(大写字母), such as names of people and places, titles of magazines, newspapers, stories and books, people’s titles(头衔), etc..
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Things that consume energy
computer light/TV/water dispenser refrigerator
hairdryer
car
/1
washing machine
oil
natural gas
energy sources
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Skimming
What are the names of the three scientists mentioned in the article?
Dr Janice Foster, Charles Keeling, George Hambley
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Para.1
1. How much did the temperature of the earth rise during the 20th century? About one degree Fahrenheit. 2. What is the question of Sophie Armstrong? So how has this come about and does it matter?
nuclear wave /
energy tidal
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energy
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① What are they? ② What are these buildings made of?
greenhouse / glass
Turn to Pre-reading 1,
③What’s the use? Page 25.
– BUT DOES IT MATTER?
What is the main topic?
A.The earth. ☺B. Global warming.
B. C. Becoming warmer doesn’t matter.
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Skimming ★ ★ ★
Where does this article most probably come from?
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Fossil Fuel(矿物燃料)
coal
produce
oil
carbon dioxide
gas
●●●●●●
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global warming
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Skimming ★ ★
Skim the title: THE EARTH IS BECOMING WARMER
keeps it from _e_s_c_a_p__in_g_
h_e_a_t_s the air up
trap…from…: keep sth in a place
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存住来自…的…
methane carbon dioxide water vapor
In the atmosphere surrounding the earth there are gases, which are called “greenhouse gases”.
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Para.2
1.What conclusion can you make from the Graph1?
The earth is becoming warmer. 2.Who is to blame for the earth’s becoming
warmer? It is human activity that has caused this global warming rather than a random but natural phenomenon.