In land area，Australia is the sixth largest nation after Russia，Canada，China，the United States of America and Brazil.It has，however，a relatively small population.
Australia is the only nation to govern an entire continent and its outlying islands.The mainland is the largest island and the smallest，flattest continent on Earth.It lies between 10° and 39° south latitude.
The highest point on the mainland，Mount Kosciuszko，is only 2，228 metres.Apart from Antarctica，Australia is the driest continent.
Australia is the driest inhabited continent on Earth.Its interior has one of the lowest rainfalls in the world and about threequarters of the land is arid or semiarid.Its fertile areas are wellwatered，however，and these are used very effectively to help feed the world.Sheep and cattle graze in dry country，but care must be taken with the soil.Some grazing land became desert when the long cycles that influence rainfall in Australia turned to drought.
The Australian Federation consists of six states and two territories.Most inland borders follow lines of longitude and latitude.The largest state，Western Australia，is about the same size as Western Europe.
两个诱思问题
1．What is the largest island on Earth?
2．What is the size of the Western Australia?
【答案】 1.The mainland of Australia.
2.It is about the same size as Western Europe.
