Choose the letter A, B, C or D to answer these following questions
People need to breathe. If they don’t breathe, they will die. But how clean is the air people breathe? If they breathe dirty air, they will have breathing problems. Plants and animals need fresh air too. A lot of the things in our lives create harmful gases and make the air dirty, like cars, motorbikes, and factories. Dirty air is called polluted air. Air pollution can also make our Earth warmer.
Question: What is the other name of dirty air?
A. Polluting air
B. Pure air
C. Breathless air
D. Polluted air
Đáp án: D
Giải thích: Dựa vào câu: “Dirty air is called polluted air”.
Dịch: Không khí bẩn được gọi là không khí ô nhiễm.
