51. arise from(=be caused by) 由…引起.
52. arrange for sb.sth. to do sth. 安排…做…
53. arrive on 到达; arrive at 到达某地(小地方);得出,作出; arrive in 到达某地(大地方);
54. be ashamed of (=feel shame, guilt or sorrow because of sth. done) 以… 为羞耻
55. assure sb. of sth. (=try to cause to believe or trust in sth.) 向…保证, 使…确信.
56. attach(to) (=to fix, fasten; join) 缚, 系 ,结
57. make an attempt at doing sth. (to do sth.) 试图做…
58. attend to (=give one’s attention, care and thought)注意,照顾;attend on(upon)(=wait upon,
serve, look after) 侍候,照料
59. attitude to toward …对…的态度.看法
60. attribute…to…(=to believe sth. to be the result of…)把..归因于.., 认为..是..的结果
61. on the average (=on average, on an average) 平均
62. (be) aware of (=be conscious of , having knowledge or consciousness)意识到,知道. 更多 SAT考试资料，请访问
http://www.91sat.com 63. at the back of (=behind) 在…后面
64. in the back of 在…后部(里面); on the back of 在…后部(外面); be on one’s back(=be ill in
bed) 卧病不起.
65. at one’s back(=supporting or favoring sb.) 支持,维护; have sb. at one ’s back 有…支持,
有…作后台
66. turn one’s back on sb. (=turn away from sb. in an impolite way) 不理睬(某人),背弃,抛弃
67. behind one’s back 背着某人(说坏话)
68. be based on upon 基于
69. on the basis of 根据…, 在…基础上
70. beat…at 在…运动项目上打赢
71. begin with 以…开始. to begin with (=first of all) 首先, 第一(经常用于开始语)
72. on behalf of (=as the representative of) 以…名义
73. believe in(=have faith or trust in; consider sth.sb. to be true) 相信,依赖,信仰.
74. benefit (from) 受益,得到好处.
75. for the benefit of 为了…的利益(好处)
责任编辑：sealion1986
