在面向对象的基本概念中， （ ） 体现对象间的交互，通过它向目标对象发送操作请求。
- A.继承
- B.多态
- C.接口
- D.消息
正确答案及解析
正确答案
解析
继承：表示类之间的层次关系（父类与子类），这种关系使得某类对象可以继承另一类对象的特征。多态使得多个类中可以定义同一操作或属性名，并在每个类中可以有不同的实现。多态使得某个属性或操作在不同的时期可以表示不同类的对象特性。接口描述对操作规范的说明，其只说明操作应该做什么，并没有定义操作如何做。可以将接口理解成为类的一个特例，它规定了实现此接口的类的操作方法，把真正的实现细节交由实现该接口的类去完成。消息体现对象间的交互，通过它向目标对象发送操作请求。
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