简述食管癌的治疗原则
参考答案：
食管癌应尽可能手术切除，手术前后辅以化疗、放疗。若患者不能手术，可行食管内支架置放术，以达到缓解梗阻、延长生存期的目的。
Jack, there is someone in the office _____would like to speak with you. [ ]
A. who
B. which
C. whom
D. what
变异体
