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听下面一段材料，回答第1-5小题。 1. How many kinds of pollutions are mentio

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听下面一段材料，回答第1-5小题。
1. How many kinds of pollutions are mentioned in the passage?
[     ]
A. 2
B. 3
C. 4
2.             pollution makes us become angry more easily.
[     ]
A. Air
B. Water
C. Noise
3. Most air pollution is caused by the dirty smoke let out from             .
[     ]
A. hospital
B. hotel
C. cars and factories
4. New laws are being made to             .
[     ]
A. protect the environment
B. pollute the air
C. fight against the factories
5. The speaker calls on              to keep our country clean and make it more beautiful.
[     ]
A. the listeners
B. all the people
C. the students
听下面一段材料，回答第1-5小题。 1. How many kinds of pollutions are mentio
1-5: B C C A B
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