按要求改写句子。 

(1)骆驼能在广阔无边的沙漠里给人们带路。

    缩句：                                                                                                      

(2)小猴爬上了树。

     扩句：                                                                                                     

(3)不许随地吐痰。   

     礼貌用语：                                                                                              

(4)这次夏令营活动我们应该参加。

     反问句：                                                                                                  

(5)今天的天气真冷。

     感叹句：                                                                                                  

(6)太阳很热。

     比喻句：                                                                                                  

(7)这里的花开得真鲜艳，红的、白的、粉的……真是五彩缤纷，美丽极了。

     排比句：                                                                                                 

褶皱构造的基本要素？