— They say Tom's brother is a billionaire.

— _______? He wouldn't accept any help from his brother, even though it was offered. [ ]

A. What if

B. What for

C. So what

D. Forget it

关于集成电路，下面说法错误的是（）。

A、集成电路是由半导体、电容等电路器件封装成的芯片

B、CPU及计算机内部的主要部件都是集成电路

C、要知道集成电路的功能，必须研究其内部结构

D、集成电路是通过引脚与其它计算机部件相连