短文改错（每小题1.5分，共15分）

下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。

增加：在缺词处加一个漏字符号(∧)，并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，并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；

2．只允许修改10处，多者(从第11处起)不计分。

My parents bought me a computer last month. It is very use. Firstly, it was good for my study. I can get a lot of informations from the Internet. For example, through the online English classes, I had improved my reading and listening skills. It is really great help. Secondly, chatting online are so popular that I can get in touch with my friends easily. In addition to, it makes my life colorful. I can do shopping online and buy that I like without go out. In a word, the computer has become her friend.

举高消防车每工作100小检查车辆的紧急降落系统是否正常。