单项选择题
Although Australia has a large area,（）of the continent is desert or semi-desert.
A.one third B.two thirds C.half D.more than half
单项选择题 The geographical structure of Australia is generally divided into threetopographical regions:（）
单项选择题 With regard to its size,Australia is（）country in the world.
单项选择题 Like the island continent of Antarctica,Australia is located entirely in（）
