Every weekend my younger brother will go to help the old man far away my house,for which he often received some            from the old man,such as a pencil and some sugar.

A．awards

B．honors

C．helps

D．rewards

女性，32岁，反复腰痛、尿频、尿痛3天。尿常规：WBC30～40/HP，RBC20～30/HP。中段尿培养有细菌生长。肾脏B超：双侧肾可见与肾锥体分布一致的强回声团，呈放射状排列，见多个小结石。1年前IVP示：双侧肾脏见多数囊肿和扩张的小管，肾锥体被造影剂充盈，出现不规则阴影，呈花束状。考虑诊断是（）

A.多囊肾、肾结石、尿路感染

B.髓质海绵肾、肾结石、尿路感染

C.多囊肾、肾结石、肾盂肾炎

D.肾积水、肾结石、逆行性尿路感染

E.髓质囊性病、肾结石、合并泌尿系感染