Choose the word whose underlined part pronounced differently from that of the others by circling A, B, C or D

I/. Choose the word whose underlined part pronounced differently from that of the others by circling A, B, C or D (3.0 points).
1. A. orchestra
B . change
C . catch
D . championship
2. A. sugar
B. serious
C. symptom
D. second
3. A. worked
B . missed
C . returned
D . watched
II/. Choose the word whose stress pattern is different from the others by circling A, B, C or D (2.0 points).
1. A. mixture
B . detective
C . improve
D . rehearse
2. A. geography
B . chemistry
C . history
D . different