下列各项，作用趋向一般属于升浮的是（）。
A.甘、辛，凉
B.辛、苦，热
C.辛、甘，温
D.甘、淡，寒
E.酸、咸，热
参考答案：C
In Township K, of the housing units are equipped with cable television. If of the housing units, including of those that are equipped with cable television, are equipped with videocassette recorders, what fraction of the housing units have neither cable television nor videocassette recorders ？（）
A.A
B.B
C.C
D.D
E.E
心血虚证与肝血虚证的主要鉴别症状是
A．面色萎黄
B．唇睑淡白
C．月经量少
D．舌质淡
E．脉细无力
of the housing units are equipped with cable television. If 
of the housing units, including 
of those that are equipped with cable television, are equipped with videocassette recorders, what fraction of the housing units have neither cable television nor videocassette recorders ？（）