( ) 9. Water-polluting rubbish will be transported to each station for treatment

Man has been polluting the earth from the time he first made fire, washed his clothes in the river and threw his waste on the ground. When land was used up or water became (1) , man moved on to another place.

Man has been polluting the earth from th...on to another place.

The air in this area got A: to pollute B: pollute C: polluting D: polluted

Ways must be found to prevent the poisonous gases ________ polluting the air. A: in B: on C: from D: at

We must find ways to prevent the poisonous gases ________ polluting the air. A: in B: with C: from D: of

Many lakes and rivers have been ________by industrial waste. A: polluting B: ruined C: crashed D: polluted

Many lakes and rivers have been___by industrial waste. A: polluted B: polluting C: pollute D: to pollute

The best irrigation water is river water, pond water and lake water A: 正确 B: 错误

What water is used in the production of injection A: pure water B: purified water C: water for injection D: sterile water for injection