问题 填空题

I/O数据缓冲器主要用于协调CPU与外部设备在______上的差异;

答案

参考答案:速度

改错题

病句诊所。(修改病句)    

1.听了这个感动的故事,受到了很大的教育。  

                                                                                                                                     

2.这次班会课上,小明第一个首先发言。  

                                                                                                                                     

3.我们为同学们表演了许多精彩的演出。

                                                                                                                                    

4.一位老师是辛勤的园丁。  

                                                                                                                                   

5.他今天一切所有的家庭作业完成了。

                                                                                                                                  

单项选择题