They dug    ,then put the box in it.

A．a three feet deep hole

B．a hole of three feet

C．a three feet deep hole

D．a hole of three feet deep

哪项表现对诊断尿路感染最有意义（）

A.畏寒、发热、白细胞增高

B.尿频、尿急、尿痛

C.尿培养细菌计数>10⁵／ml

D.清洁中段尿白细胞>5／HP

E.尿亚硝酸盐还原试验阳性