The patient was in bad need of operation but there was no guarantee(保证) that she would survive the anaesthetic (麻醉剂), which made the doctors on the horn of a .
A. process
B. arrangement
C. ceremony
D. dilemma
网友回答
A. process
B. arrangement
C. ceremony
(答案→)D. dilemma
解析：考查名词辨析。A进程；B安排；C仪式；D困境，窘境。句意：那位病人急需手术，但是无法保证她能从麻醉剂中生还，这使医生们陷入进退两难的境地。on the horn of a dilemma进退两难。故选D。