The young man is determined to _____a small business of his own after he graduates from college.

A．set up

B．make up

C．bring up

D．turn up

对于单纯性肾病综合征的发生，下列正确的是

A．溶血性链球菌直接感染所致
B．溶血性链球菌所致的变态反应
C．与机体的免疫功能紊乱有关
D．由急性肾炎转化而来
E．与细胞免疫功能紊乱有关