It can be inferred from the first paragraph that.....

Câu hỏi: It can be inferred from the first paragraph that......

A the definition of air pollution will continue to change

B  water vapour is an air pollutant in localized areas

C most air pollutants today can be seen or smelt

D a substance becomes an air pollutant only in cities

Câu hỏi trên thuộc đề trắc nghiệm

- Đề 4 - HKI - tiếng Anh 12 (có lời giải chi tiết)