51.a(chǎn)rise from 由引起

52.a(chǎn)rrange for sb./sth. to do sth. 安排做

53.a(chǎn)rrive 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 以為羞恥

55.a(chǎn)ssure sb. of sth. 向保證,使確信

56.a(chǎn)ttach 縛,系,結(jié)

57. make an attempt at doing sth. 試圖做

58.a(chǎn)ttend to 注意,照顧;attend on 伺候,照料

59.a(chǎn)ttribute to/ toward 對(duì)的態(tài)度、怎么看

60.a(chǎn)ttributeto 把歸因于,覺得是的結(jié)果

61.on the average 平均

62. aware of 意識(shí)到,了解