43. balance 熟义： n/v 平衡

　　I must check my bank balance. n. 差额，余款

　　The school aims to balance the amount of time spent on arts and science subjects. v. 权衡

　　44．back （熟义：n．背）

　　Many of his friends backed his plan．vt．支持

　　45. badly adv．（熟义：坏）

　　The boy badly wants a new bike．adv. 迫切

　　46. bar  熟义：棒，条，吧间

　　Poor health may be a bar to success in life.  n. 障碍

　　47. become 熟义：v. 变得，变成

　　Her new hat certainly becomes her. vt. 适于，适合  

　　48. before conj．才；就（熟义：以前）

　　It was a long time before I got to sleep again．过了很久我才再睡着。

　　I hadn't waited long before he came．我没有等多久，他就来了。

　　49. behaviour  熟义：n. 举止，行为

　　The behaviour of this computer is moderately good. n. 性能，特点

　　50. blank 熟义：adj. 空白的 n. 空白

　　The stranger returned my greeting with a blank look. adj. 没表情的，空虚的，没兴趣的

　　I can't think where I've left my umbrella; my mind's a complete blank. n.记忆中的空白，遗忘

　　51. blue 熟义：adj/n  蓝色

　　His songs always make me feel blue.adj. 忧伤的

　　52. beside 熟义：prep. 在...旁边

　　Beside your earlier work ,this piece seems rather disappointing. prep. 与...相比  

　　53. build 熟义：v. 建设

　　The athlete has a solid build. n. 身材，体形

　　54. bare 熟义：adj. 裸露的

　　He likes to bare his heart/soul with his close friends. vt. 向某人袒露心声

　　55. bear 熟义：vt. 忍受，容忍

　　He was badly wounded in the war and still bears the scars. v. 显示，带有

　　56. bitter 熟义: adj. 苦的，痛苦的

　　Why was she so bitter against Mr. Smith? adj. 强烈的(...如此强烈反对...）

　　57. blanket 熟义：n. 毯子

　　The whole village was blanketed with heavy snow. vt.以厚层覆(译:... 覆盖着厚厚的雪)

　　58. break down［熟义：（机器等）坏了］

　　All our plans broke down．（计划）失败，坚持不下去。

　　59. bring （熟义：带来）

　　The cries brought the neighbours running．v．引起

　　60. build （熟义：v．修建）

　　The football player has a solid build．n．身材，体型

　　61. build up 熟义：建立，增强...体质

　　The noise is building up until she could not stand it. 增高，加强 62. burst 熟义：v. 使爆炸，破裂

　　The storm burst and we all got wet. v.突然爆发

　　63. bond  熟义：v. 使牢固结合 adj. 一定会

　　I don't like being desk-bound all day. adj. 受...约束

　　Mothers who are depressed sometimes fail to bond with their children. v. 发展或建立信赖和亲切关系

　　64.burning 熟义：adj. 炽热的

　　She is burning to tell you the news. adj.感情等强烈的