参考答案

正确答案：B
解析：这道题考查句意理解。划线的句子是：What easier way is there for a nurse，a policeman， a hairdresser，or a waiter to lose professional identity than to step out of uniform?这句话可译为：“一个护士、警察、理发师或者餐厅服务员要想让别人看不出自己的身份的话，还有什么比脱下制服更易行的方法呢?”换句话说，也就是B选项所说的people's identity can be recognized more easily by their uniforms“人们的职业身份更易于根据他们的制服辨认出来”。其他选项的意思分别为：A选项it's impossible for people with jobs to lose their identity“有工作的人不可能失去身份”，C选项nurses and policemen must wear uniforms when working“护士和警察上班时必须穿制服”，D选项people in those professions act in an easier way without uniforms“从事这些职业的人不穿制服时行事更不受拘束。”这些都不是划线句子的原意。