小小解说员（解释下列词语）。

(1)相依为命：                                                                                                                                  

(2)欣欣向荣：                                                                                                                                  

(3)郑重其事：                                                                                                                                  

(4)束手无策：                                                                                                                                  

(5)垂头丧气：                                                                                                                                  

(6)胸有成竹：                                                                                                                                 

用户配置文件类型有哪四种？