观察舌苔的润燥，主要了解（）。
A.湿浊的消长
B.邪气的深浅
C.津液的盈亏
D.疾病的进退
E.胃气的盛衰
参考答案：C
一Is that his dictionary?
— ___________ .
A．Yes，it isn’t
B．No．that isn’t
C．Yes，he is
D．No，it isn’t
