19. The Rolling Stones ， arrogant street-fighting men ， demanded revolution .
arrogant ： acting as if one were more important than others傲慢的；妄自尊大的。
如；
He was just too arrogant to his subordinates .他对他的部下太傲慢了。
20. Feelings ， always a part of any musical statement ， were a major subject .
这里always a part of any musical statement 是feelings的同位语。
21. The Beatles showed there were a range of emotions between love and hate .
range ： a number of different things of the same general sort or type （变动的，可供选择的）范围；幅度。
如：
a range of colors to choose from可以选择的一系列颜色；
a range of prices from 5 yuan to 50 yuan 从5元到50元不等的各种价格。