[单项选择]

1

The period of adolescence, i.e. , the period between childhood and adulthood, may be long or short depending on social expectations and on society’s definition as to what constitutes maturity and adulthood. In primitive societies adolescence was frequently a relatively short period of time, while in industrial society with patterns of prolonged education coupled with laws against child labor, the period of adolescence is much longer and may include most of the second decade of one’s life. Furthermore, the length of the adolescent period and the definition of adulthood status may change in a given society as social and eco- nomic conditions change. Examples of this type of change are the disappearance of the fron- tier in the latter part of the nineteenth century in the United States, and more universally, the industrialization of an agricultural society.
In modern society, ceremonies for adolescence have lost their formal recognit
A. in the late 19th century in the United States the dividing line between adolescence and adulthood no longer existed
B. no one can marry without the permission of his parents until the age of twenty-one
C. one is considered to have reached adulthood when he has a driver’s license
D. one is not free from the restrictions of child labor laws until he can join the army