"干呕、吐涎沫,头痛者,吴茱萸汤主之"见于何书()
A.《内经》
B.《难经》
C.《伤寒论》
D.《温病条辨》
E.《景岳全书》
参考答案:C
_____ about the safety of her son, John’s mother looked upset.
A.Concerning
B.Concerned
C.To concern
D.Concern
危险性