The flood is believed ____ more than 50 people and made thousands homeless, ____ it perhaps the most destroying flood in history in the area.

A．killing; to make

B．to have killed; making

C．to have killed; having made

D．having killed; making

女，58岁，近半年来自觉心前区阵发性疼痛，常在休息或清晨时发作，持续时间15分钟，含服硝酸甘油后缓解，疼痛发作时，心电图胸前导联ST段抬高，运动负荷试验阴性，其诊断为（）

A.初发型心绞痛

B.卧位型心绞痛

C.稳定型心绞痛

D.变异型心绞痛

E.恶化型心绞痛