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选修6《Learning about Language》PPT课件优质课下载
Big flood in Hubei province in 2016
Huge Tornado in Jiangsu province in 2016
What is the main cause of the natural disasters?
Global Warming
What other effects does global warming have?
Extreme weather
The rise of sea level
The unbalanced
ecosystem
Decreased output of crops
…
What is global warming?
Global warming is a phenomenon that has caused great concern. We can see how it ___________(产生) by reading the passage.
Greenhouse gases in the atmosphere can warm the earth by trapping heat energy. However, the catastrophe begins when we add huge q_________of extra carbon dioxide to the atmosphere by burning fossil fuels. ___________ (即使) we ___________ (用完) of them, there are still plenty of greenhouse gases that keep on ___________(聚集). Therefore, more heat energy is trapped, thus ___________in (导致) global warming.
comes about
uantities
even if
run out
building up
resulting
True or False
The next meeting will be taken place tomorrow.
It is impossible to predict what will happen.
I don’t know how this confusion has been come
about.