You should ________ when your parents aren't at home. [ ]

A. look yourself after

B. take care for yourself

C. take care of yourself

患者，男性，28岁，右肾区剧痛12小时来门诊，经B超检查发现，左肾中度积水。在泌尿系急性梗阻早期，由于肾盂内压增高，肾内“安全阀”开放，尿液可通过以下哪些途径回流

A．肾盂静脉回流

B．肾盂肾小管回流

C．肾盂肾窦回流

D．肾盂肾实质回流

E．肾盂淋巴回流