开证行以自身名义开证时两个当事人是（）.
A、开证行、申请人；
B、开证行、受益人；
C、议付行、受益人；
D、议付行、申请人；
参考答案：B
When I was at college , I _____ two foreign languages but I _____ most now ..
A. learnt; had forgotten B. learnt ; have forgotten
C. have learnt ; forgot D have learnt ; have forgotten
按疼痛发生的部位可分为（）
A.诱发痛
B.自发痛
C.躯体痛
D.内脏痛
E.牵涉痛
