Text A

　　11. worked for freshwater conservation for nonprofit purposes.

　　12. His house was equipped with advanced water-saving facilities.

　　13. how I could contribute to water conversation.

　　14. his lifestyle was too extravagant.

　　15. exaggeration.

　　16. Humorous.

　　Text B

　　17. found that interest in reunions was linked with school experience.

　　18. U.S. class reunions are usually occasions to show off one's recent success.

　　19. Shared undergraduate experience on campus.

　　20. bring into focus contrasting opinions.

　　21. Reasons for popularity and (non)attendance for alumni reunions.

　　Text C

　　22. showed a wide interest.

　　23. Mr. Cattanzara was surprised at George's reading plan.

　　24. remained the same as usual.

　　25. was dissatisfied with his life and surroundings.

　　Text D

　　26. no activities can be compared to those in 1909.

　　27. Variety and magnitude of celebration activities.

　　28. resulted in similar disparaging remarks on Lincoln.

　　29. reveals the variety of current opinions on heroes.

　　30. Lincoln's greatness remains despite the passage of time.