可引起持续性广泛性剧烈腹痛的是（）
A.消化性溃疡
B.胆道蛔虫梗阻
C.肾结石
D.肠梗阻
E.急性弥漫性腹膜炎
参考答案：E
Shirley ______ a book about Tibet last year, but I don’t know whether she has finished it. [ ]
A. has written
B. wrote
C. had written
D. was writing
关于白喉抗毒素的应用，下述哪项是错误的（）
A.可以用于治疗
B.可以用于紧急预防
C.用前必须先做皮肤过敏实验
D.皮试阳性，应进行减敏疗法
E.用其治疗的原则是早期、足量
