The boy with the two dogs _____ when the earthquake rocked the city.

A．were sleeping

B．is sleeping

C．was sleeping

D．are asleep

增殖型肠结核的X线表现主要为（）

A.跳跃征

B.肠腔扩张

C.肠管收缩

D.肠壁增厚

E.以上都是