1、1. billion /bljn / 2. native /netv/ 3. attitud/ttju:d / 4. reference /refrns / 5. refer / rf:(r) / 6. refer to 7. system/sstm / 8. despite /dspat / 9. ups and downs 10. factor /fkt(r)/ 11. based /best/ 12. base /bes/ 13. date back (to .) 14.bone / bn / 15. shell /el / 16. symbol /smbl / 17. carve/ k
2、:v / 18. dynasty /dnsti/ 19. variety /vrati/ 20. major /med(r)/ 21. no matter where, who, what, etc. 22. dialect /dalekt/ 23. means /mi:nz/ 24. classic /klsk/ 25.regard /rg:d/ 26. character /krkt(r)/ 27. calligraphy / klrfi / 28. global /glbl/ 29. affair /fe(r)/ 30. appreciate/pri:iet / 31. specific
3、 /spsfk/ 32. CE 33. struggle /strgl/ 34.tongue /t/ 35. point of view 36. semester/smest(r)/ 37.gas /s/ 38. petrol /petrl/ 39. subway /sbwe/ 40. apartment /p:tmnt/ 41. pants / pnts / 42. beg /beg/ 43.equal /i:kwl / 44. ga /gp/ 45. demand /dm:nd/ 46. vocabulary /vkbjlri / 47. description/dskrpn/ 48. relate /rlet / 49. relate to
