The advertisements________on the wall are designed by my sister.

A．are put up

B．are putting up

C．put up

D．be put up

腹股沟管外环位于以下哪层组织上

A．腹横筋膜

B．腹内斜肌

C．腹横肌

D．腹外斜肌腱膜

E．皮下浅筋膜