改错。

阅读短文，判断标有题号的每一行画线部分和有漏字符号(^)处是否有错误。如无错误，在该行右边横线上写一个“正确”；如有错误（每行只有一个）,则按下列情况改正：

画线部分为多余的词：把该词写在该行右边横线上，并画上斜线(＼)。

画线部分为错词：在该行右边横线上写出正确的词。

有漏字符号(^)处缺一个词：在该行右边横线上写出所缺的词。

Do you know about Chinese paper cuts? Here I'm glad to tell you              ____ 

anything about them. Chinese paper cuts have a long history of over         ____ 

2, 000 years. They can be see in different parts of China. Many people       ____ 

 no matter young or old, are fond ∧ them. People in northern part of        ____ 

China do well in make paper cuts. They cut paper into different shapes    ____ 

like birds, animal, flowers and so on. I think Chinese paper cuts are         ____ 

 not only beautiful but also very usefully. People usually put them on     ____ 

doors or windows when they celebrated something happy, especially       ____ 

 for the Spring Festival. More and more people are interesting in them.  ____ 

So come to the China and see more Chinese paper cuts someday.            ____ 

将粉笔头A轻放在以2m/s的恒定速度运动的足够长水平传送带上后，传送带上留下一条长度为4m的划线，若使该传送带改做加速度大小为1.5m/s²的匀减速运动直至速度为零，并且在传送带开始做匀减速运动的同时，将另一粉笔头B轻放在传送带上，则粉笔头B停止在传送带上的位置与划线起点间的距离为多少？（g取10m/s²）