---Who would you rather ________ the English Speech Contest?

---- Li Ping, I think , is the best choice.

A．have attend

B．attend

C．have attended

D．attending

硬盘的电路板上有一个元件，里面固化的程序可以对硬盘进行初始化、执行加电和启动主轴电机、进行加电初始寻道、定位及故障检测等操作。这个元件是（）

A.CPU

B.RAM芯片

C.磁盘

D.ROM芯片