A.one third B.two thirdsC.half D.more than halfAlthough……

单项选择题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

单项选择题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

单项选择题Like the island continent of Antarctica,Australia is located entirely in（）

A.the Northern Hemisphere　
B.the Southern Hemisphere
C.the North Pole
D.the South Pole

单项选择题In 1949（）became Canada.s tenth province.

A.Newfoundland
B.Prince Edward Island
C.Labrador
D.British Columbia

单项选择题In 1931 by（）Canada was formally declared to be a sovereign nation and became a member of the Common-wealth of Nations.

A.the Peace Treaty of 1919　
B.the Statute of Westminster
C.the Meek Lake Accord　
D.the constitution Act of 1982