1. intentionally=deliberately
2. intimidating(威吓, 胁迫)
3. intolerable=unbearable
4. intricate=complicate
5. intrigue
6. intrinsic=inherent
7. intruded=imposed
8. inundated=overwhelmed
9. invade=move into(invade vt.侵略, 侵袭, 拥挤)
10. invaluable=highly useful(可能是选反义词)
11. invaluable=precious
12. invariably=always
13. investigate=probe
14. involve=include
15. isolated=secluded
J
16. jeopardize=threaten动 危害;使受危困jeopardy=threaten
17. jolting=shocking
18. judge=estimate(judge:判断，评价)
K
19. kangaroo=n.[动]袋鼠)
20. keeping with=consistent of/free of/fill with/
21. keeping with=consistent with
22. key=significant
L
23. lack=without
24. laden=filled.adj装满的，负载的
25. laden=loaded
26. landscape=scenery
27. largely,
28. launch=set afloat
29. launch=start
30. lead=principle
31. leap=jump
32. legendary=mythical
33. legitimate=authentic
34. legitimate=justified
35. liabilities=limitations(冒充
36. limber=flexible
37. linked=connected
38. little more than=simply和...无差别[一样
39. long and important到底选那个呢?
40. loom=threat
41. luxuriant=thriving( 答案还有moist)
M
42. magnitude=extent.n量级，范围，程度
43. maintain=continue
44. make sense=c我选 logical 有意义
45. mammoth=huge
46. marvel=wonder
47. mask=disguise; masked 伪装的，隐藏的，潜伏的
48. massive=enormous
49. mastery=expert
50. mastery n=mastery of…. 对…精通;形容词形式 ------expert