进食后腹痛加重见于（）
A.胃溃疡
B.十二指肠溃疡
C.胃黏膜脱垂症
D.肠结核
E.原发性肝癌
参考答案：A
Your father and mother ______young. [ ]
A. look
B. look at
C. look like
D. look after
一视同仁是职业道德的根本。
