37. A （content， contented） person is one who is happy with what he has.
Content： happy and satisfied（因为别人的原因而使你感到满意）
Contented： happy and satisfied because your life is good（因为自己的原因而使你感到满意）
38. All the streets will be （eliminated， illuminated） tomorrow evening for the celebration.
Eliminate：to completely get rid of something that is unnecessary or unwanted（有除掉敌人或淘汰比赛对手意思）
Illuminate： to make a light shine on something， or to fill a place with light（原意为照亮，另有阐明的意思）
39. Her （perseverance， persistence） in wearing that old-fashioned hat surprised her husband.
Perseverance： determination to keep trying to achieve something in spite of difficulties（坚毅）
Persistence： determination to do something even though it is difficult or other people oppose it（坚持或固执）
40. The effect of the officer‘s speech was such that the army recovered it’s （moral， morale） at once.
Moral： relating to the principles of what is right and wrong behavior， and with the difference between good and evil（道德）
Morale： the level of confidence and positive feelings that people have， especially people who work together， who belong to the same team etc（士气）
41. South Africa used to be a country where black people and white people were （separated， segregated）。
Separate： to divide or split into different parts， if something separates two places or two things， it is between them so that they are not touching each other
Segregate： to separate one group of people from others， especially because they are of a different race， sex， or religion（尤指种族隔离）
42. The letter from her sister so （embittered， agitated） her that she stayed awake half the night， trying to think of a way to get back at her.
Embitter： angry， sad， or full of hate because of bad or unfair things that have happened to you
Agitate： （formal） to make someone feel anxious， upset， and nervous（使不安，另有煽动的意思）
Get back at sb.： to do something to hurt or harm someone who has hurt or harmed you
43. You haven‘t seen him for over a year？“ he sounded （incredible， incredulous）。
Incredible： too strange to be believed or very difficult to believe（表示一种怀疑的态度）
Incredulous： unable or unwilling to believe something（表示虽然不愿相信但承认事实）
44. No matter what he said， the only response he got from him was a （noncommittal， tentative） “I see”
Noncommittal： deliberately not expressing your opinion or intentions clearly（不明朗的）
Tentative： not definite or certain， and may be changed later（暂时，试验性的）
45. That plan was too （untrue， unrealistic） to be adopted.
Untrue： not based on facts that are correct
Unrealistic： unrealistic ideas or hopes are not reasonable or sensible
46. When people looked at him too （intently， tentatively）， he felt very uncomfortable.
Intently： giving careful attention to something so that you think about nothing else
Tentatively： not definite or certain， and may be changed later（暂时，试验性的）
47. Since she didn‘t know anybody in that city， she was rather （hesitant， tentative） when accepting the job offer.
Hesitant： uncertain about what to do or say because you are nervous or unwilling
Tentative： done without confidence（这是tentative的第二个意思）
48. “Do you really think he will give up the position？” he （scoffed， scold）。
Scoff： to laugh at a person or idea， and talk about them in a way that shows you think they are stupid； make fun of
Scold： to angrily criticize someone， especially a child， about something they have done
49. She told the children about her life on the farm all those years ago， how she （got used to， used to） get up at four every morning to milk the cows.
Get used to： to have experienced something so that it no longer seems surprising， difficult， strange etc
Used to： if something used to happen， it happened regularly or all the time in the past， but does not happen now
50. The teacher told the boys first to （pour， splash） some water on the floor before mopping it.
Pour： to make a liquid or other substance flow out of or into a container by holding it at an angle
Splash： to make someone or something wet with a lot of small drops of water or other liquid CF： sprinkle
51. When he was discovered， the pick-pocket （waved， flapped） a knife to threaten the people around him.
Wave： to raise your arm and move your hand from side to side in order to make someone notice you
Flap： to move quickly up and down or from side to side， often making a noise
52. The eagle suddenly （drifted， swooped） down and snatched the piece of meat.
Drift： to move slowly on water or in the air
Swoop： if a bird or aircraft swoops， it moves suddenly down through the air， especially in order to attack something
53. With the help of the specially trained dogs， they were able to （rescue， save） ten people buried in the snow.
Rescue： to save someone or something from a situation of danger or harm（强调营救的过程）
Save： to make someone or something safe from danger， harm， or destruction（强调安全）
54. His feet were numb with cold； as soon as he got into the room he started （rubbing， stroking） them vigorously.
Rub： to move your hand， or something such as a cloth， backwards and forwards over a surface while pressing firmly
Stroke： to move your hand gently over something
Numb means unable to feel anything