I. Choose the word whose underlined part is pronounced differently from that of the others.
1. A. knowledge B. comfort C. popular D. college
2. A. orchestra B. scholarship C. chemistry D. charity
3. A. announced B. struggled C. observed D. repaired
II. Choose the word that has main stress placed differently from the others.
1. A. structure B. institution C. landscape D. preserve
2. A. security B. rickshaw C. spectacular D. administer