Tom, who is always shy in public, has made some friends at school, ______ has pleased his parents.

A．who

B．where

C．that

D．which

男，78岁，进食梗阻2月，结合图像，最可能的诊断为（）

A.食管下段癌

B.贲门癌

C.贲门失弛缓

D.胃底癌

E.贲门癌侵及胃底小弯