----- Nội dung dịch tự động từ ảnh ----- Exercise 3. Mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions. 1. Americans throw twenty-eight and a half million tons of plastic in landfills every year. Daway water bodies directly causes water A. in B. at C.to 2. Waste water from many factories which is dumped pollution. A. on B. into C. out D. by fumes from these vehicles are serious air pollutants. B. Poison C. Poisonous 3. A. Poisonously D. Poisons 4. Air pollution occurs when the atmosphere contains gases, dust, or fumes in A. unharmed B. harmless C. harm D. harmful 5. Too much use of electric lights in cities may A. go B. result C. cause light pollution. D. lead amounts. CO
