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《Listening and vocabulary》优质课PPT课件下载
Students in our school are taught in a safe, secure _____________.
3. ________ is a substance used in chemistry.
garbage
environment
Chemical
Stage 1 Reviewing the words
Complete the sentences with the following words.
4. The ice at the Poles is beginning to _________.
5. The restaurant offers a romantic __________.
atmosphere
melt
6. Trees take in _____________and give out oxygen.
7. The earthquake caused great _______.
carbon dioxide
damage
Stage 2 Leading-in
The average temperature has been __________
in china in the past 60 years.
increasing
decreasing
What’s the problem?
Global Warming
The average temperature is _____________ all
over the world.
increasing