To her anger, when she sat down, she found a piece of paper on her desk _____ “Stupid Sarah got a D!”    

A．that saying

B．on which written

C．that was read

D．saying

食管腐蚀伤后4周出现吞咽困难逐渐加重，可认为是（）。

A.食管腐蚀伤进入缓解期

B.食管异物

C.残留的腐蚀剂进一步破坏食管壁

D.食管腐蚀伤进入瘢痕狭窄期

E.食管腐蚀伤后并发食管炎症