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《Lesson 1 Global Warming》最新PPT课件优质课下载
increase the awareness of
protecting the earth
overfishing
natural
disaster
pollution
Environmental
problems
Brain storm
global
warming
poverty
forest
destruction
endangered
animals
wars
1.Earthquakes and volcanic eruptions are examples of natural disasters .
2.The giant panda and the Bengal tiger are endangered species .
3.Because of the greenhouse effect , the earth is warmed by gases trapped in the atmosphere.
1
Complete the sentences
4. Global warming is an increase over time of the average temperature of the Earth.
5. Overfishing is harmful to the ecology of the sea.
6.Thousands of people in Africa continue to die because of war and poverty .