When I called the bus service, I _______ that there was no more bus.[ ]

A. was telling      

B. was told      

C. has told      

D. had told

下列哪几项表现符合典型稳定型心绞痛发作（）。

A.胸骨后压榨性疼痛

B.疼痛很少超过15分钟

C.休息后5分钟内消失

D.含服硝酸甘油3～5分钟内疼痛不能缓解

E.疼痛发作均有诱因