單項(xiàng)選擇題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


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1.單項(xiàng)選擇題The geographical structure of Australia is generally divided into threetopographical regions:()

A.the Eastern Plateau,the Central highlands and the Western Lowlands
B.the Central Plateau,the Western Highlands and the Eastern Lowlands
C.the Western Plateau,the Eastern highlands and the Central Eastern Lowlands
D.the Central Plateau,the Western highlands and the Eastern Lowlands

2.單項(xiàng)選擇題With regard to its size,Australia is()country in the world.

A.the third largest 
B.the fourth largest
C.the fifth largest 
D.the sixth largest