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必修3《Lesson 2 Protecting the Sea》PPT课件优质课下载
use the wave in the sea to ___________ electricity
develop the _________ and natural gas in the sea
___________ the goods by sea
catch
sea
produce
petrol
transport
dirty
However,do you know how the sea is now?
The sea is being ill now.It is badly polluted.
polluted
We should protect the sea.
pollute pollution
plastics ban
industrial chemicals
agricultural
Pronunciation
Definition of new words
Pollute---to make dangerously impure or unfit for use
Pollution---the action of polluting or the state of being polluted
Over-fishing---people fish too much and the number of fish falls too high
Chemicals---substance used in or produced by chemistry
Ban---to forbid esp. by law
Industrial waste---the waste produced by industrial activity, such as that of factories, mills and mines. It has existed since the outset of the industrial revolution