题目

   Our mood may change suddenly like a storm with lightning and thunderbolts that comes without notice.      The good news is that bad moods can leave as suddenly as they have come. Exceptions to this rule of course are cases where there are other problems such as depression or any other mental destruction. How to improve your mood?      46     When you understand that you are not feeling happy but you are in depression or disappointment, then you can use these simple techniques that will be able to change the negative situation and improve your mood.     47     . 根据语境，续写两个句子，使之构成一个语义相关的排比句。　　美是游荡在蓝天上的几缕白云，美是偎倚在山冈上的几点残雪，__________________________________，_________________________________。