成人的椎体结核和椎体肿瘤在X线片上的主要鉴别点是观察
A.椎体破坏程度
B.是否有死骨形成
C.椎旁软骨组织的阴影
D.椎间隙是否变狭窄或消失
E.椎体骨质疏松程度
参考答案:D
女性,28岁,正常足月产后2个月, * * 断续流血。妇科检查: * * 穹隆部见直径约1cm紫蓝色结节,宫颈光滑,子宫稍大而软,双附件正常。胸片未见异常,尿妊娠试验(+),挖除 * * 病灶病理检查见到成堆高度增生滋养细胞及血块,无绒毛结构。最可能的诊断是()
A.子宫复旧不良
B.胎膜残留
C.胎盘小叶残留
D.绒毛膜癌
E.侵蚀性葡萄胎
— Why didn't you come and open the door for me, dear?
— Sorry, Jack. I _____ in the kitchen and didn't hear you. [ ]
A. was cooking
B. am cooking
C. have cooked
D. will cook