In some countries, societal and familial treatment of the elderly usually reflects a great degree of independence and individualism. Their【C1】______support is often provided by social security or welfare systems, which【C2】______dependence on their family.【C3】______, older people may seek their own friends【C4】______become too emotionally dependent on their children. Senior citizens centers provide a(n) 【C5】______for peer-group association within one's own age groups. There are problems,【C6】______with growing old, in the United States. Glorification of youth and【C7】______to the aged have left many older people alienated and alone. Some families send their older relatives to nursing homes rather than【C8】______them into the homes of the children or grandchildren This【C9】______of the elderly from the young has contributed【C10】______the isolation of an increasingly large segment of society. On the other hand, there are many older people who【C11】______to live in retirement communities【C12】______they have the companionship of other older people and【C13】______of many recreational and social activities close to home. The【C14】______of the elderly can be further understood by distinguishing between nuclear and extended family structures. In the United States the nuclear family, which consists【C15】______the father, the mother, and the children, is considered "the family". The extended family,【C16】______in other cultures, includes grandparents, aunts, uncles, cousins, nephews, nieces, and children in law. The【C17】______between the nuclear and extended family is important【C18】______it suggests the extent of family ties and obligations. In extended families the children and parents have【C19】______ties and obligations to relatives. It is common in these families to support older family members,【C20】______intensive contact with relatives, and to establish communal housing.