当归四逆汤证的病机是（）
A.阳气内郁，不达四末
B.阴寒内盛，阳气衰微
C.营血虚弱，寒凝经脉
D.元气大亏，阳气暴脱
E.肝郁气滞
参考答案：C
— Could you take care of our dog while we are away?
— _____. [ ]
A. With pleasure
B. It's my pleasure
C. Never mind
D. That's all right
地下水的来源有（）。
