When we worked in the same office，we _______ often have coffee together.

A．could

B．should

C．would

D．ought to

某26岁妇女，发现右侧卵巢肿物2年。lh前突然右下腹剧痛什恶心、呕吐。妇科检查：子宫(一)，右附件有手拳人囊性肿物，边界清，活动差，左附件(一)。其诊断是

A．肿瘤破裂
B．肿瘤感染
C．右附件肿瘤蒂扭转
D．肿瘤恶变
E．左附件炎性包块