Choose the letter A, B, C or D to complete the passage below
Air pollution is one of _________ (6) problems of the current time all over the world. There ___________ (7) a lot of reasons for this pollution. First of all, the release of air pollutants such as smog and solid materials cause air pollution and health issues ___________ (8) human. ___________ (9) dirty wastes in big cities are polluting the whole atmospheric air. Thirdly, motor vehicles are releasing polluted gases contributing to the air pollution. Finally, some natural ________ (10) like dust, soil particles, and natural gases are also the source of air pollution.
Question 10:
A. pollutes
B. pollutions
C. pollutants
D. polluting
Chọn đáp án: C
Giải thích:
pollutants: chất bẩn, chất gây ô nhiễm
Dịch: Cuối cùng, các chất gây ô nhiễm tự nhiên như bụi, các chất có trong đất, hay khí tự nhiên cũng là nguyên nhây gây ô nhiễm không khí.
