She has always _____ her father and felt highly honored for what he has been doing. [ ]

A. looked up to

B. looked down upon

C. looked around for

D. looked forward to

早期食管癌的X线表现为（）

A.狭窄和梗阻

B.局限性粘膜皱襞增粗和断裂

C.较大充盈缺损

D.局限性管壁僵硬

E.以上不均正确