假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线，并在该词下面写出修改后的词。

注意: 1.每处错误及其修改均仅限一词;     2.只允许修改10处，多者(从第11处起)不计分。

Dear Tom，

    I'm glad to hear that you are very interesting in Guoxue．Let me to give you a simple introduction to it．

    Generally speaking，Guoxue refers to the excellent traditional Chinese culture，that includes philosophy，literature，history，music，painting and so on．Guoxue has been playing an increasing important part in China，especially for them students．Not only did it tell us how to study，but it also teaches us how to live．More and more Guoxue courses is given in schools of different levels all over China．

    If you want to get better understanding of Guoxue，you are welcome to China to learn it，feel it and enjoy it．I'm sure you'11 benefit from living in two different culture．I'm looking forward to see you soon in China．

Yours，

Wang Kai

许的笔画顺序是：____。

关于声现象，下列说法中不正确的是  （      ）

进入青春期后，生理和心理都在发生迅速而明显的变化。我们对身体的变化变得更加敏感，心理也充满了新奇和困惑。下面不属于青春期生理变化的是（）