1. a matter of speculation = supposition

　　2. abroad = oversea

　　3. abrupt = sudden

　　4. abstract =/= concrete

　　5. absurd = ridiculous

　　6. acceleration = speeding up

　　7. accentuate = emphasize

　　8. acceptable = permissible

　　9. accessible =

　　easy to reach, get

　　easy to obtain

　　easy to meet and talk to

　　10. acclaim=praise

　　11. accommodate=adjust to.

　　12. accommodate=allow for

　　适应，供给，滤及，体谅

　　13. accompany=join陪伴，假如，结合

　　14. accomplished=achieved

　　15. accorded=granted选项有 exclaimed, granted.. 我选的GRANTED . 以前重来没有看到过这种用法的

　　16. accordingly=consequently(文中有强烈因果关系) 因而

　　17. account for=explainsv解释，说明

　　18. accumulate=collect/press down (accumulate v.积聚, 堆积)

　　19. accumulate=build up

　　20. accurately,

　　21. achieve=subject(文中选)

　　22. acknowledge=concede

　　23. acquire=obstain

　　24. actually=truly

　　25. adapted=modifiedadj适合的，改进的

　　26. added=extra( 答案还有continuing)

　　27. adhere=stick together

　　28. adjacent=nearby;

　　29. adjunct n=appendage

　　30. adjusted=modificated(adjusted adj.调整过的 )

　　31. admit=let in(admit : permit to enter)

　　32. adorn=decoratev装饰

　　33. advance=improvement

　　34. advanced=progressive

　　35. advent=arrival

　　36. advent=introduce(不确定)(advent n.(尤指不寻常的人或事)出现, 到来)

　　37. adverse=negative(Adverse adj.不利的, 敌对的, 相反的)

　　38. adverse=unfavorable相反的

　　39. advocating=recommendingv提倡，推荐

　　40. affection=fondness

　　41. affluence=wealth

　　42. afford=provide/purchase/originate/require answer: provide

　　43. afluence=wealth

　　44. aggravating=irritating

　　45. agile=nimble

　　46. agitated=disturbed

　　47. alarming=upsetting?

　　48. alert

　　49. allocates=designates v分派，指派

　　50. altered=changed