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take away ;hole; directly; form; escape; rise; refer to; the greenhouse effect;
2. To know something about environmental problems and effect.
3. To improve the skills of reading .
4. To know the importance of protecting our environment.
Let’s look at what have happened to our earth recent years.
We must know more about the problems and save the earth.
Our earth is ill, and she is being sent to hospital. We have but one earth!!!
cut down
take away
forests , animals, plants
拿走、带走
Let’s talk about the environmental problems and effect!
problem
cars and buses
health problems
effect
factories
rivers and lakes
problem
effect
oxygen
a special kind of oxygen
氧气
Do you know?
called “ozone” (O3)
a very big hole in the ozone layer,
too much harmful radiation from the sun
will reach the earth directly
直接地
放射，放射物