For many senior citizens, the years after 65 are not enjoyable. They feel unproductive when the no longer work.

　　___17____ In addition, they may feel lonely being away from their families and their contacts they had in their work. Moreover, they become more concerned with their health as they grow older. If they live in big cities, they often worry about their safety.

　　___18____ They feel free to do things they were not able to do when they were working and raising families. They now have time to enjoy hobbies and sports and travel. They associate with their fellow senior citizens who have common interests. Some senior citizens continue to work beyond retirement age. ____19____

　　The number of senior citizens in the US is increasing rapidly because people are living longer than before. ____20___ Because of their larger numbers and more active life styles, senior citizens are gaining social influence in the country, both politically and economically. Their concerns are receiving a wider audience than ever before. The time may come when all Americans will look forward to becoming senior citizens.

　　Their lives lose meaning.

　　Most old people can not make money and they live a very hard life.

　　Other senior citizens enjoy their lives.

　　The average life span for Americans is now more than 74 years.

　　People over the age of 65 in the US are called senior citizens.

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