消化性溃疡的主要症状是
A.厌食,消瘦
B.恶心,呕吐
C.嗳气,反酸
D.上腹疼痛
E.呕血,黑便
参考答案:D
败毒散中配伍少量人参的主要用意是()
A.益气生津,以资汗源
B.补脾益肺,培土生金
C.大补肺脾,以复正气
D.扶助正气,鼓邪外出
E.益气补虚,以复正气
He’s given me so much help that I really want to do something for him _____.
A.in turn
B.by turns
C.in return
D.in answer