It is only when you nearly lose someone _____ fully conscious of how much you value him.

A．do you become

B．then you become

C．have you become

D．that you become

下列不是湿邪的致病特点的是

A．传变较慢，病势缠绵
B．中焦脾胃为病变中心
C．易于遏阳阻气
D．瘥后易于复发
E．易于损伤元气