What has NOT been controlled at all as regards water pollution
A: Industrial polluters.
B: Sewage.
C: Rain runoff.
D: Toxic substances.
A: Industrial polluters.
B: Sewage.
C: Rain runoff.
D: Toxic substances.
举一反三
- ____for a long time, the fields are all dried up.A. There has been no rain B. Having no rain C. There having been no rain D. There being no rain A: A. There has been no rain B: B. Having no rain C: C. There having been no rain D: D. There being no rain
- _____ is NOT pollution prevention equipment. A: Oily water separator B: Sewage treatment plant C: Fuel oil separator D: Incinerator
- ______has been pointed out before, air pollution is becoming serious in cities. A: That B: What C: Which D: As
- Many lakes and rivers have been ________by industrial waste. A: pollutes B: polluted C: pollution
- The main cause of pollution is ______. A: the release of artificial or natural substances into the environment B: the production of new industrial goods C: increased amounts of a natural substance D: our ever-increasing population