假如英语课上老师要求同学们交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，要求你在错误的地方增加、删除或修改某个单词。

增加：在缺词处加一个漏字符号(/\)，在其下面写上该加的词。

删除：把多余的词用斜线(＼)划掉。

修改：在错的词下划一横线，在该词下面写上修改后的词。

注意：1．每处错误及其修改均仅限一词；

Recently I read an article in a magazine．It was about a mother who was worried about his son just because of he always kept his hair long．The mother thought that was not right，and the son felt there was nothing unusually about it．Different generations have different opinions on the same thing．That is what is meaning by“the generation gap”．We can see them in our daily lives．Most of our parents like listening to old songs when young people prefer pop songs．Every time my father finds me listen to rock music，he always shouted，“Shut it off．It’s awful!”How can we deal the generation gap?

动态投资部分，是指在建设期内，资方向调节税和国家新批准的税费、汇率、因建设期利息、建设工程需缴纳的固定资产投利率变动以及建设期价格变动引起的建设投资( )。

A．施工预留费
B．生产准备费
C．增加额
D．管理费