The roommates have lived for three years and not once _____with each other.

A．they had quarreled

B．they have quarreled

C．have they quarreled

D．had they quarreled

方先生，28岁，自感低热、乏力、食欲不振，有盗汗、体重下降、呼吸困难、胸痛等表现，就医诊断为浸润型肺结核，收入院抗结核治疗

护士小张为张女士进行注射，她使用过的隔离衣，清洁处应是

A．衣的肩部

B．衣的内面和衣领

C．两侧腰部

D．腰以下部分

E．背部