[单项选择]The Eskimos have developed a capacity to live peacefully with one another. They have not had a strict system of landownership, one of the universal causes of conflict. They have evolved a system of food-sharing among families that makes the preservation of life possible. The absolute necessity of creating this safeguard against starvation has strengthened bonds between neighbors. Almost every traveler has noted the Eskimos’ friendliness and good humor toward strangers and among themselves. In a country where agriculture is impossible they have been forced to spend their energies in food-gathering rather than warfare. If one family disagreed with another, the usual solution was for that family to pick up its few possessions and go elsewhere. In the vast unused land, moving presented almost no problem.
The practice of infanticide, and suicide among the old people, seems to have been a factor of survival in times of food scarcity. The size of the family was controlled to some extent
A. trial marriage was permitted only once in one’s lifetime
B. young couples lived by themselves during the trial period
C. children out of trial marriage would be given to others
D. divorce was not accepted by the Eskimos

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