I. Choose the word whose underlined part is pronounced differently from the others.

1. A. disaster               B. damage                   C. collapse                   D. rage

2. A. radioactive         B. pollution                 C. contaminate            D. convey

3. A. denied               B. played                      C. learned                         D. worked

II. Choose the word with different stress from the others in each question.

4. A. Chinese              B. geography                     C. economic                    D. trustee

5. A. thermal               B. pressure                  C. electricity                  D. concentrate

6. A. botaric              B.  eruption                 C. medical                   D. biology