Choose the word which has a different sound

1. A. compulsory

B. technology

C. academic

D. eliminate

2. A. exploration

B. attractive

C. conventional

D. impatient

3. A. responsible

B. apprehension

C. preferential

D. understanding

4. A. responsibility

B. trigonometry

C. conversation

D. documentary

5. A. doubtful

B. solidify

C. politics

D. stimulate

6. A. brotherhood

B. vertical

C. opponent

D. penalty

7. A. economics

B. sociology

C. mathematics

D. philosophy

8. A. climate

B. attractive

C. graduate

D. company

9. A. satisfy

B. sacrifice

C. apology

D. richness

10. A. activity

B. allergic

C. volunteer