听力理解：
1. manufacturers 2. consider 3. thrifty
4. She is not happy 5. It is useful 6. She has
7. To try to change 8 it is an 9. have veried
10. the future 11. a telephone bill 12. rent
13. Applying 14.plan 15. learning how to do gardening
16. work 17. one's position 18. all the
19. historical 20. It tends 21. On the coast
22. It was incomplete 23. highways 24. 48
25. offices 26. Hotel 27. A client
28. A day after 29. Problems 30. Box