We have spotted the location, _______ we thought is the site of Emperor Qin Shihuang. [ ]

A. that                  

B. what                    

C. which            

D. where

早期鼻咽癌CT表现为（）

A.无特征性

B.咽隐窝变浅、消失

C.咽隐窝加深、扩张

D.腭帆张肌肿大

E.咽旁间隙内移