1. dormitory
　
　　2. compact disk
　
　　3. Disk Operation System
　
　　4. Computer-aided Design
　
　　5. United Kingdom
　
　　6. gymnasium
　
　　7. International Business Machines Corporation
　
　　8. examination
　
　　9. United Nations’ Education, Science and Culture Organization
　
　　10. Unidentified Flying Objects
　
　　11. Very Important Person
　
　　12. kilobytes
　
　　13. intelligence quotient
　
　　14. laboratory
　
　　15. Greenwich Mean Time
　
　　16. photograph
　
　　17. Test of English as a Foreign Language
　
　　18. Gross National Product
　
　　19. cable television
　
　　20. Graduate Record Examination