认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入一个最恰当的单词。
注意：每个空格只填1个单词。请将答案写在答题卡相应题号的横线上。
The standard of living of any country means the average person's share of the goods and services which the country produces. A country’s standard of living, therefore, depends first and foremost on its ability to produce wealth. "Wealth" in this sense is not money, for we do not live on money but on things that money can buy, “goods” such as food and clothing, and "services" such as transport and entertainment.
A country's ability to produce wealth depends upon many factors, most of which have an effect on one another. Wealth depends to a very large degree upon a country's natural resources, such as coal, gold, and other minerals, water supply and so on. Some regions of the world are well supplied with coal and minerals, and have a fertile (肥沃的)soil and a favorable climate; other regions possess perhaps only one of these things, and some regions possess none of them. The USA is one of the wealthiest regions of the world because she has vast natural resources within her borders(边疆), her soil is fertile, and her climate is of great variety. The Sahara Desert, on the other hand, is one of the least wealthy.
Next to natural resources comes the ability to turn them to use. Sound and stable (稳定的)political conditions, and freedom from foreign invasion(侵略), enable a country to develop its natural resources peacefully and steadily, and to produce more wealth than another country equally well served by nature but less well ordered.
Another important factor is the technical efficiency(效能) of a country's people. Old countries that have, through many centuries, trained up numerous(无数的) skilled craftsmen and technicians are better placed to produce wealth than countries whose workers are largely unskilled.
Wealth also produces wealth. As a country becomes wealthier, its people have a large margin(富余)for saving, and can put their savings(储蓄) into factories and machines which will help workers to turn out more goods in their working day.

Title	People's (1)_____ standard
Meaning	The average share of the goods and services for people (2) _____ by the country.
Some factors that (3) _____ the standard of living of any country	▲ Wealth depends (4) _____ upon a country's natural resources such as coal, gold, other minerals, water supply and a fertile soil and a favorable climate ▲ Next to natural resources comes the ability to turn (5) _____ resources to use. ▲ The (6) _____ efficiency of a country's people is another important factor
The comparison between the USA and the Sahara Desert	▲ The USA has vast natural resources, her soil is fertile, and it has (7) _____ climate ▲ The Sahara Desert, on the other hand, is one of the (8) _____
The (9) _____ of wealth	▲ Wealth also produces wealth. ▲ Wealthy people can put their savings into factories and machines which will help workers to (10) _____ out more goods in their working day.