口臭难闻，牙龈腐烂者多属于（）
A.口腔不洁
B.食积胃肠
C.胃热
D.牙疳
E.内有溃腐脓疡
参考答案：D
食管癌前后对穿野照射，不适合那一种治疗方式（）。
A.术前放疗
B.术后放疗
C.根治性放疗
D.单纯放疗
E.姑息性放疗
As to the question of whether we will sell our house or who we shall sell the house to, you ____ have answer by tomorrow.
A．shall
B．will
C．could
D．must
