The woman, who is said to have moved to America, _____ in China for almost twenty years.[ ]

A. lived              

B. has lived      

C. was living    

D. had lived

对于泌尿系感染尿沉渣镜检的白细胞应大于（）

A.1个／高倍视野

B.2个／高倍视野

C.3个／高倍视野

D.4个／高倍视野

E.5个／高倍视野