—I'm sorry I didn't make it to your party last night.

—________. I know you're busy these days.[ ]

A. Of course  

B. No kidding

C. That's all right  

D. Don't mention it

下列有关直肠淋巴引流的描述，正确的是（）

A.沿直肠上动脉到肠系膜上动脉旁淋巴结

B.经直肠上动脉旁淋巴结入髂内淋巴结

C.直肠上、下两组淋巴网之间无相互吻合支

D.经坐骨肛管间隙淋巴结入髂内淋巴结

E.经会阴部入腹股沟淋巴结，然后到髂内淋巴结