单击此处编辑母版标题样式单击此处编辑母版文本样式第二级第三级第四级第五级Unit 4 The Virtual WorldLanguage Points virtualadj. 1.created and existing only in aputer 虚拟的2. being or acting as what is described but not accepted as suc

include<>include<>include<>include<>class employee{public:employee(const long const char)virtual employee()const chargetname()constconst long getnumber()constvirtual double earnings()const=0virtual