如果a-b=5,b-c=2,则a-c=7。[ ]
正确
—Reading is the best way to pass time on the train.
— , I never go traveling without a book.
A.You are joking
B.That's true
C.I don't think so
D.It sounds like fun
牙龈出血,红肿热痛者多见于:()
A.血热证
B.肾阴虚证
C.脾不摄血证
D.胃火亢盛证
E.肝火上炎证