乌拉尔山脉—乌拉尔河—大高加索山脉—土耳其海峡属于哪两大洲分界线[ ]
A、亚洲
B、大洋洲
C、非洲
D、欧洲
AD
-_______ does she chat with friends on the Internet?
-Once a week. [ ]
A. How long
B. How much
C. How many times
D. How often
阴阳互损反映于临床上的证候是()
A.实热证
B.虚热证
C.实寒证
D.虚寒证
E.阴阳两虚证