尿中出现烂苹果味说明（）。

A.尿毒症

B.肾盂肾炎

C.肾衰竭

D.糖尿病酮症酸中毒

E. * * 炎

It was_______he came backfrom Africa that year_______he met the girl he would like to marry.     [ ]

A. when ; then                  

B. not ; until    

C. not until ; that            

D. only ; when