下列哪项为恶性肿瘤（）。
A.皮样囊肿
B.Krukenberg瘤
C.内膜增生过长
D.囊腺瘤
E.黄素囊肿
参考答案：B
Mrs Smith was very ill.The doctor said she was ___ of death.
A．at the edge
B．at edge
C．on edge
D．on the edge
维生素C注射液的碘量法测定需加入
A．0.1939B．游离α-生育酚C．丙酮D．硫色素反应E．醋酸汞
