—Do you like communicating with your friends on QQ or MSN?

—____________. I'd rather ____________mobile phone. [ ]

A. Either; use          

B. Neither; use        

C. Both; not to use        

D. Neither; to use

下面对对象概念描述错误的是

A．任何对象都必须有继承性

B．对象是属性和方法的封装体

C．对象间的通讯靠消息传递

D．操作是对象的动态属性