Listening and speaking
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Discuss with your partner the following questions based on the information from the above passage you have just heard.
Hints for question 1:
Pollution means to make things unfit or unclean for use. It usually includes water pollution, air pollution, soil pollution, sound pollution, light pollution, etc.
Hints for question3:
Things to do to prevent pollution:
(1) garbage recycling
(2) waste water treatment
(3) soil conservation
(4) driving less
(5) atmospheric monitoring

