小题1:细节理解题。根据第一段第二行some high school and college students in the United States often spend many hours as volunteers in hospitals, orphanages(孤儿院) or homes for the aged(老人). 美国的一些中学生和大学生作为志愿者经常花费许多时间在医院,孤儿院和敬老院做志愿活动.可知选C.敬老院的人。
小题2:细节理解题。根据第一段第五行Other young volunteers go and work in the homes of people who are sick or old.描述可知年轻的志愿者是去生病的或是年老的人的家里做做志愿活动.故选C,处于困境中的。
小题3:细节理解题。根据第一段第五行For boys who no longer have fathers, there is an organization called Big Brothers.描述可知大哥哥组织是专门帮助那些不再有爸爸的男孩子们的一个组织。故选B。
小题4:细节理解题。根据第一段倒数第五行Some of these clubs show movies or organize short trips to the mountains, the beaches, museums or other places of interest.描述可知这些俱乐部组织看电影和组织短途旅行，没有C为他们做衣服，故选C。
小题5:细节理解题。根据第一段倒数第三行Most of these clubs use a lot of high school and college students as volunteers because they are young enough to remember the problems of younger boys and girls描述大部分俱乐部用许多中学生和大学生作为志愿者是因为他们足够年轻能够记住更小的男孩女孩的问题。故选B。
考点：教育类阅读。