Parents and children often disagree about what is important or right because ______.
A. they have different styles of life
B. they hate each other
C. parents think that their children are troublemakers
D. they are in a society of rapidly changing social and moral values
正确答案：D
本题属推理分析题文章中间的“Butinasocietyofrapidlychangingsocialandmoralvalues”表
明：在一社会和道德价值迅速变化的社会里父母与孩子常常争吵
