发病率最低的女性生殖道恶性肿瘤是（）。
A.外阴癌
B.宫颈癌
C.子宫体癌
D.输卵管癌
E.卵巢癌
参考答案：D
Sonia didn't come to the party because she was ______ with her homework. [ ]
A. busy
B. different
C. angry
D. famous
贲门周围血管离断术成败的关键在于（）
A.胃后静脉的离断
B.胃短静脉的离断
C.冠状静脉胃支的离断
D.冠状静脉食管支的离断
E.冠状静脉高位食管支的离断
