The student, if well_________, will pass the examination without much difficulty.

A．preparing

B．prepared

C．to prepare

D．ready

大多数可经非手术治疗好转的是

A．瘢痕性幽门梗阻
B．胃十二指肠溃疡大出血
C．胃十二指肠溃疡急性穿孔
D．十二指肠溃疡并球部变形
E．穿透性十二指肠溃