Choose the word whose underlined part has a different pronunciation from the others.
1. A. barista B. question C. pollutant D. diversity
2. A. species B. nest C. special D. helpful
II. Choose the word whose the main stress is placed differently from the others.
3. A. government B. agency C. benefit D. diversity
4. A. disappearance B. vulnerable C. conservation D. generation
5. A. convenient B. endanger C. critical D. tradition