7. If you mixed red and green, you'd get yellow. 8. These are devices to detect any heating problems, aren't these? EXERCISE 17: Mark the letter A, B, C, or D to indicate the word that differs from the other three in the position of primary stress in each of the following questions. 1. A. organiser 2. A. presentation 3. A. renewable B. comfortable B. pessimistic B. sustainable B. generate B. inhabitant B. injure B. consume B. fatal C. technology C. residential C. insfrastructure C. assignment C. geography D. populated D. innovative D. environment D. pollutant D. convenient D. fitness 4. A. familiar 5. A. overcrowded 6. A. prevent 7. A. healthy 8. A. yoga C. sugar C. diet C. immune D. headache D. careful D. properly D. natural 9. A. infectious B. essential C. precaution C. mineral 10. A. unhealthy B. vitamin