If you get to my house before I do, help yourself to a drink and    __. [    ]

A. take it easy

B. be careful    

C. that's all right.

D. make yourself at home

疝内容物为多个小肠肠襻见于（）

A.Richter疝

B.Little疝

C.嵌顿疝

D.绞窄性疝

E.Waydl疝