David has been a director in EFK Ltd for the past fi ve years. EFK Ltd is a private limited liability company which is involved in the business of land developing. David has been offered a job at Best Construction Ltd, which carries on business in the same industry. While still a director of EFK Ltd, Eric approaches David in order to negotiate a contract for the provision of services in relation to building a block of fl ats. After fi nalising the deal with Eric, David quits from the position of director of EFK Ltd and joins Best Construction Ltd. Best Construction Ltd provides the services under the deal negotiated with Eric and makes a profi t of EUR100,000.Required:Advise EFK Ltd as to the remedies, if any, available to them. (10 marks)

男性，54岁，进行性吞咽困难已半年，食管钡透见中段食管有6cm长狭窄，管壁僵硬，黏膜破坏，最适宜的治疗方法（）

A.化学疗法

B.放射疗法

C.激光疗法

D.放疗和手术切除

E.胃造瘘术