The urinary system is mainly thought of as the system______waste in the form of urine but it actually does much more than that.
【正确答案】
A
【答案解析】解析：eliminate“排除，消除，除掉”；inoculate“给……做预防注射”；irradiate“照耀，发光，用X线”；intoxicate“使喝醉”。根据医学知识，泌尿系统一般被看作把尿液排出体外的系统，故此处应填含有“排除，排出”之意的词，故选A。