Exercise 2: Choose the words whose underlined part is pronounced differently.
1. A. environment B. temperature C. botanical D. contaminant
2. A. untreated B. aquatic C. pollution D. electronic
3. A. pollute B. poison C. damage D. illustrate
4. A. presentation B. radioactive C. environmental D. contamination
5. A. permanent B. chemical C. dramatic D. herbicide