细节理解题(2011 佛山一中月考题) In the earliest stages of man's development he had no more need of money than animals have
He was content with very simple forms of shelter, made his own rough tools and weapons and could provide food and clothing for himself and his family from natural materials around him
As he became more civilized, however, he began to want better shelter, more efficient tools and weapons, and more comfortable and more lasting clothing than could be provided by his own neighborhood or by the work of his own unskilled hands
For these things he had to turn to the skilled people such as smiths, leather workers or carpenters
It was then that the question of payment arose
As men became more civilized they ______
all learnt to make by themselves the things neededB
had to tr