51. arise from(=be caused by) 由…引起。
52. arrange for sb.sth. to do sth. 安排…做…
53. arrive on 到達(dá); arrive at 到達(dá)某地(小地方);得出，作出; arrive in 到達(dá)某地(大地方);
54. be ashamed of (=feel shame， guilt or sorrow because of sth. done) 以… 為羞恥
55. assure sb. of sth. (=try to cause to believe or trust in sth.) 向…保證， 使…確信。
56. attach(to) (=to fix， fasten; join) 縛， 系 ，結(jié)
57. make an attempt at doing sth. (to do sth.) 試圖做…
58. attend to (=give one's attention， care and thought)注意，照顧;attend on(upon)(=wait upon， serve， look after) 侍候，照料
59. attitude to toward …對(duì)…的態(tài)度?？捶?BR> 60. attribute…to…(=to believe sth. to be the result of…)把……歸因于……， 認(rèn)為……是……的結(jié)果