题目内容：

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

People have all turned to sad music to make themselves feel better at some point in their lives, 1.why does the music with double or even triple sadness help drag people out of low spirits?

A new study throws light on what's going on inside people’s brains when they match their music to their feelings, and it looks as if sad music can be enjoyable, rather than 2.(simple) depressing. Music of this sort can arouse positive memories in people’s life , thus3.(lift)their mood.

Psychologist Adrian North from Curtin University in     Australia says there 4.(existence) two groups of possible explanations for why people enjoy listening to sad music like this---one from social psychology, and the other from cognitive neuroscience(神经学).

5.terms of social psychology, one idea about this is that people will feel 6.(good) about themselves if they focus on someone who's doing even worse. Everything's going to be okay, because this person is having 7.even worse day than they are.

Another idea from social psychology is that people like to listen to the very music 8.shows their present life circumstances, because this kind of music makes them feel they are understood. With their emotions9.(share), they definitely get a certain amount of comfort.

So, the 10.(conclude) again—sad music does cheer people up, and it works far better than happy music, in most cases.