The most important environmental risk factor in low- and middle-income countries is?()
A: None of the above
B: Unsafe water
C: Outdoor air pollution
D: Indoor air pollution
A: None of the above
B: Unsafe water
C: Outdoor air pollution
D: Indoor air pollution
举一反三
- If your speech is on environmental problems, what kind of subtopic might be relatively new and novel?( ) A: air pollution B: visual pollution C: noise pollution D: pharmaceutical pollution E: thermal pollution F: water pollution
- 酸雨是属于什么污染 A: water pollution B: air pollution C: soil pollution D: noise pollution
- Which one could be a possible thesis statement? A: The importance of combating air pollution B: It is important to take every possible means to prevent air pollution on the earth. C: Many cars produce millions of tons of carbon dioxide each year. D: Air pollution is a serious problem in all the countries in the world.
- Pollution refers primarily to the of air, water, and land by wastes._
- 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