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模块五 Module V Balance and harmony《Reading(1)：Secrets and lies》公开课PPT课件优质课下载
The automobiles are piping out all kinds of waste gas into the atmosphere.
We can always see heavy smoke piped from the tall and ugly chimneys.
Sandstorm
Everything was covered with sands.
It looks like something like a bomb exploding not far away.
Deforestation(森林开伐)
A photo from the Amazon drainage
（污水） area.
Many tropical rain forests were cut down in order to be developed into farmlands.
The impact on human beings
Many children suffer hunger.
Because of pollution many children were born abnormal.（不正常的）
The economy
The environment
Reading
The economy
or the environment
must we choose?
A debate between an environmentalist and an economist
Do you know the steps of a debate ?
Step 1:
Step 2:
Step 3:
Reading strategy ：Reading a debate
The presenter（主持人） introduces both sides who have opposite opinions and arranges the time.