解释下列词语的加线部分，并完成相关的练习。   
1．美不胜收：____  ，“胜”还可以解释成            ，请你运用这种释义组词并写一个句子。
                                                                                                                                               
2．肃然起敬：                                                                     
     截然不同：                                                                      
    请你在下面的横线上再写出三个带“然”的四字词语。
                                                                                                                                                 
3．“能歌善舞”这个词语中，画横线的词语是一组            ，请仿照样子再写上几个：