—May I have a look at the menu for a while?  

—Of course, ______, sir.[ ]

A. take your time  

B. enjoy yourself  

C. it doesn’t matter  

D. don’t worry

掌中间隙感染多表现为（）

A.掌心凹陷消失

B.局部肿胀明显

C.手背部水肿明显

D.拇指外展，示指半曲及拒伸

E.伴有高热等全身症状