Which of the following titles is a proper one? A: What should we do to prevent air pollution? B: An Exploration into the Measures to Prevent Air Pollution C: How does air pollution happen? D: Computer Retrieval

酸雨是属于什么污染 A: water pollution B: air pollution C: soil pollution D: noise pollution

Pollution in the air reduced the _________ near the airport.

Increased air pollution __________ respiratory illness.

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

Pollution refers primarily to the of air, water, and land by wastes._

Which of the following may be a long-term effect of air 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.

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

Air pollution __________ , this city is still a good place to live in.