Text-1 Read the text. Then choose the correct answer for questions 1-2

118. The author states that...
A) aquatic life is merely disturbed by thermal pollution
B) thermal pollution is more dangerous than pollution from rubbish or chemical
C) hydroelectric plants put dirty water back into the environment
D) thermal pollution occurs when the temperature of a river or lake raised
119. In the text, what does the author say about rubbish, sewage or chemicals?
A) They have, on occasions, proved to be beneficial to aquatic life.
B) They are all part of natural environment.
C) They can kill aquatic life when they are thrown into the water.
D) They are the main cause of warm water pollution.