— How was your trip in Chengdu?

— Not so good. I stayed there for two days. But it rained on _____ of the days.

                                                                                                                                                        [ ]

A. none          

B. neither      

C. both        

D. all

黄连商品药材略呈圆柱形，其形如蚕，“过桥”较长，顶端有少许残茎，此为（）

A.云连

B.雅连

C.味连

D.凤尾连