Do you believe some special dogs can do things _____ man?   [ ]

A. as good as            

B. as well as  

C. as soon as              

D. as careful as

眼部超声检查中，"同心圆"征是指赤道部扫查发现（）

A.不完全性脉络膜脱离

B.完全性视网膜脱离

C.部分性色素膜脱离

D.完全性虹膜脱离

E.完全性色素膜脱离