—Hello, Mike.  Long time no see, Where are you?

—Oh, not only my parent but also I __ Wuhan for a month.

A．have gone to

B．have been to

C．has been in

D．have been in

高密度性肾囊肿，最常见于（）

A.囊肿合并感染

B.囊肿内出血

C.囊液蛋白质含量高

D.囊肿壁钙化

E.囊肿与肾盂、肾盏交通，对比剂进入