Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
1, The island has been serious polluted by a copper mine.
A B C D
2, There was a dramatic decrease to the rate of our pollution last year.
A B C D
3, The river has become such polluted for us to swim.
A B C D
4, Chemicals can effect the air quality and cause many health problems.
A B C D
5, The factory secretly dumped millions of litres of raw sewage to the
A B C D
sea last year.
7, These substances are poisonous with fish when they are pumped
A B C
directly into water.
D
1B
2C
3 B
4 A
5 D
6 A
7B