Atlanta, as well as many other big cities, _____ once again becoming one of the commercial and

cultural centers of the USA right now. [ ]

A. is

B. are

C. has been

D. have been

男性，35岁，患腹外疝1年，站立或咳嗽时右侧腹股沟区出现疝块，可进入阴囊，平卧或用手推送，疝块可回纳腹腔而消失。

其疝环是( )。

A．股环

B．卵圆窝

C．腹股沟管浅环

D．腹股沟管深环

E．腹股沟三角