A.+→
B.→+
C.+→
D.→+
答案:D
上腹不适,隐痛,嗳气
A.反流性食管炎主要表现
B.功能性消化不良主要表现
C.食管癌主要表现
D.贲门失弛缓症主要表现
E.肝癌主要表现
Smoking is not _____ in the meeting hall.
A.supposed
B.allowed
C.happened
D.admitted