POLLUTIONIII. 1. C E 3. A 4. B 5. D A. PHONETICS

2. - DAP AN BAI TAP THI DIEM 8 CUA TAC GIA LUU HOANG TRI
DAP AN BAI TAP THI DIEM 8 CUA TAC GIA LUU HOANG TRI

2. Generally, noise is produced by household appliances, big trucks, vehicles and motorbikes on

microscopic, oceanic, geographic, energetic

the road, planes and helicopters flying over cities, loud speakers, etc.

II. 1. chemicals

2. historical

3. medical

4. aquatic