硬盘的内部传输率是指（）。
A、硬盘的高速缓存到内存
B、CPU到Cache
C、内存到CPU
D、硬盘的磁头到硬盘的高速缓存
参考答案：D
He was afraid what he had done ______ a disastrous effect on his career.
a. might have b. could be c. have been d. shall be
在“智能ABC”输入法状态下，按________组合键在中文标点和英文标点之间进行切换。
A．Shift+Space
B．Shift+Ctrl
C．Ctrl+．（句号）
D．Ctrl+Space
