To return to the problem of water pollution, I’d
举一反三
- His talk ( ) the problem of water pollution along the Yangtze River.
- Protecting the earth is a worldwide question because ______ A: pollution is everywhere in the world B: polluted air and water in one place affects distant areas C: people all over the world are responsible for the pollution problem D: all of the above
- 酸雨是属于什么污染 A: water pollution B: air pollution C: soil pollution D: noise pollution
- Environment pollution is a problem that requires ______ attention.
- We must _____ the problem of traffic pollution now.