caregivers to find out why they took on the responsibility of caring for an elderly,dependent relative.They discovered three basic reasons.Many caregivers believed that they had an obligation to help their relative.Some stated that helping others made them feel more useful. Others hoped that by helping someone now,they would deserve care when they became old and dependent. 4 When people care for an elderly relative,they often do not use available community services,such as adult daycare centers.If the caregivers are adult children.they are more likely to use such services.especially because they often have jobs and other responsibilities. In contrast,a spouse,usually the wife,is much less likely to use support services or to put the dependent person in a nursing home.Social workers discovered that the reason for this difference was fear of poverty.An ill,elderly person may live for years,and medical care and nursing homes are very expensive.An elderly couple's savings can disappear very quickly.The surviving spouse,usually the wife,can be left in poverty.As a result.she often tries to take care of her husband herself for as long as she can. 5 Researchers have found that caring for the elderly can be a very positive experience. The elderly appreciated the care and attention they received.They were affectionate and cooperative,However,even when caregiving is satisfying,it is hard work.Social workers and experts on aging offer caregivers and potential caregivers help when arranging for the care of an elderly relative.One consideration is to ask parents what they want before they become sick or dependent.Perhaps they prefer going into a nursing home and can select one in advance.On the other hand.they may want to live with their adult children.Caregivers must also learn to be assertive and ask for help from others,especially siblings,Brothers and sisters are often willing to help,but they do not know what to do. 6 We can expect to live longer lives than ever before in American history.Caring for the elderly and being taken care of can be a mutually satisfying experience for everyone involved. Questions 21-30 are based on Passage 3. 21.Most old people in the US are put in nursing homes by their family members. 913caregivers to find out why they took on the responsibility of caring for an elderly, dependent relative. They discovered three basic reasons. Many caregivers believed that they had an obligation to help their relative. Some stated that helping others made them feel more useful. Others hoped that by helping someone now, they would deserve care when they became old and dependent. 4When people care for an elderly relative, they often do not use available community services, such as adult daycare centers. If the caregivers are adult children. they are more likely to use such services. especially because they often have jobs and other responsibilities. In contrast, a spouse, usually the wife, is much less likely to use support services or to put the dependent person in a nursing home. Social workers discovered that the reason for this difference was fear of poverty. An ill, elderly person may live for years，and medical care and nursing homes are very expensive. An elderly couple’s savings can disappear very quickly. The surviving spouse, usually the wife, can be left in poverty. As a result. she often tries to take care of her husband herself for as long as she can. 5Researchers have found that caring for the elderly can be a very positive experience. The elderly appreciated the care and attention they received. They were affectionate and cooperative, However, even when caregiving is satisfying, it is hard work. Social workers and experts on aging offer caregivers and potential caregivers help when arranging for the care of an elderly relative. One consideration is to ask parents what they want before they become sick or dependent. Perhaps they prefer going into a nursing home and can select one in advance. On the other hand. they may want to live with their adult children. Caregivers must also learn to be assertive and ask for help from others, especially siblings, Brothers and sisters are often willing to help, but they do not know what to do. 6We can expect to live longer lives than ever before in American history. Caring for the elderly and being taken care of can be a mutually satisfying experience for everyone involved. Questions 21-30 are based on Passage 3, 21. Most old people in the US are put in nursing homes by their family members. 913