. Choose the word that has the stress pattern different from the others.
1. A. cucumber B. orchestra C. equation D. rivalry
2. A. entertainment B. celebration C. mausoleum D. experiment
3. A. separate B. disappear C. nominate D. socialize
4. A. recent B. ancient C. awake D. ethnic
5. A. appliance B. applicant C. pesticide D. institute