单项选择题

The national bird of the United States is ______.

A．sparrow
B．swallowr
C．eagle
D．swan
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单项选择题
Canada’s largest city is ().

A. Montreal
B. Toronto
C. Ottawa
D. Vancouver
单项选择题
Nearly () of the land in Canada has no permanent population.

A. half
B. two-thirds
C. 89%
D. 95%
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