形态辨认障碍的训练属于（）

A.物品失认的训练

B.体觉失认的训练

C.图形-背景区分障碍的训练

D.空间关系障碍的训练

E.单侧忽略的训练

______ controls the operation of the computer and performs it's data processing functions.

A．CPU

B．Disk

C．Memory

D．I/O