Many experts hold the view _______ protection awareness is _______ the key to better environment lies.

A．that; where

B．which; in which

C．which; where

D．that; in which

一门诊病人，女29岁，因左侧腰部钝痛3个月就诊，经B超KUBIVP检查发现左侧肾盂有一2cm×1．5cm大小结石，左肾积水左输尿管正常，右肾及输尿管正常，该病人首选的治疗方案为（）。

A.中药排石

B.暂观察

C.内腔镜碎石

D.开放手术

E.体外冲击波碎石（ESWL）