男性，66岁，尿频、尿急4年余。一直以前列腺增生服药治疗，近半年来间断出现肉眼血尿前来就诊。对该患者而言哪几项检查是不必要的（）

A.B超检查

B.放射性核素肾扫描

C.直肠指诊

D.尿脱落细胞学检查

E.尿流率检查

Lucy liked all the dresses there,but she took the ______ one to save as much money as

possible for Project Hope. [ ]

A. cheaper

B. more expensive

C. cheapest

D. most expensive