目前认为多数人类肾小球疾病是（）
A.遗传性疾病
B.细菌感染性疾病
C.免疫介导的疾病
D.免疫缺陷性疾病
E.代谢性疾病
参考答案：C
The secretary________letters all the afternoon and there are still two letters to finish.[ ]
A. is typing
B. had type
C. has been typed
D. has been typing
反映组织灌注最敏感的器官是（）
A.肝
B.脾
C.肾
D.心
E.肺
