Population ageing refers to the situation in which the average age of the citizens of a country increases as a result of longer life expectancy（预期寿命）of its citizens or a reduction in the number of births every year.Today, both developed and developing countries around the world are experiencing an increase in the average age of its citizens with a growing proportion（比例）of elders in the population.
An increase in the proportion of elderly persons in the population leads to a growing pool of volunteers.This has been considered as a global advantage where the elderly contribute free labor to community and government projects after retirement.These elders are more comfortable financially（财政上）and find pleasure in giving back to their communities and countries.Besides,older people are more experienced than younger people,and they can make use of their experience to help uphold morals（维护道德）and values in a country.
What's more,an ageing population has something to do with fewer children.This can save much cost because less money has to be used to meet the needs of fewer children and young people in the economy.This would result in lower public education cost,lower health-care cost and other social programs that are provided for children by the government.
However,there are also a lot of disadvantages.For example,an increase in the proportion of the elderly in the population raises questions as to how best to support them after retirement.Also older people are more likely to suffer from illnesses,so an increasing number of sick persons will put pressure on health care,which might not be able to meet the demand.
Furthermore,an ageing population also increases competition for jobs,especially if the retirement age is extended（延长）.As older members of the population have a longer time to retire,young people will find it more difficult to find jobs.In this case,fewer innovations（创新）and changes take place in organizations because companies are limited to old ways of doing things.
So,in order to solve these problems brought by an aging population,careful long-term strategic planning is required.The elderly are important and they have much to offer in helping the young people to understand their purpose in life.An increase in social enterprises（规划）should be the trend to help get the elderly involved in young people's lives.

An ageing population
Introduction	●Population ageing refers to an increase in the average age of a country’s citizens which （76）is 【小题1】by the longer life expectancy and lower birth rates. ●Today,an ageing population is a(n)【小题2】problem.
【小题3】	●More and more retired elderly people are willing to do something for their communities and countries for【小题4】. ●Older people’s【小题5】can be good for the growth of young people.
	●An ageing population means a reduction in finances that are required to meet the needs of children and young people.
Disadvantages	●Much money is needed to support a(n)【小题6】number of older people. ●With more older people【小题7】from illnesses,this may increase health care costs.
	●An ageing population can make young people have【小题8】in finding jobs. ●It is hard to develop innovations in organizations and companies.
【小题9】	Make a careful long-term strategic plan to make sure that the elders play a【小题10】in young people’s lives.