In many parts of China, ________ the idea ______ boys are more important than girls.

A．it has; which

B．there exists; that

C．there is existing; which

D．there remains to be; that

糖尿病患者并见视物昏蒙，耳鸣耳聋，舌红少苔，脉细数。治疗应首选（）

A．六味地黄汤

B．知柏地黄丸

C．明目地黄汤

D．七味都气丸

E．金匮肾气丸