There are three main (1) …… of pollution: air pollution, water pollution and noise pollution. Air can be (2)…… in many ways. Smoke in the air from mills, factories and industry contains carbon, monoxide, carbon dioxide, and methane, which are all poisonous gases. This leads (3) …… health problems like asthma and lung diseases. Water is also polluted by the (4)…… of commercial and industrial waste. The noise of vehicles, mills, and factories can be really unbearable. People living next to a building site where there is too much noise can become sick, as they cannot sleep or relax. This is called (5) ……
1. A. kinds B. type C. sort D. things
2. A. pollution B. polluting C. polluted D. pollute
3. A. to B. for C. on D. of
4. A. reservoir B. discharge C. survival D. outbreak
5. A. thermal pollution B. soil pollution C. light pollution D.noise pollution