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Four were from China, the United States, Russia, Canada pupils have their own pride endless land area, but they want to know in the end who is the largest land, who' s the smallest, their judgment is as follows: Canada Student: Canada' s largest, the United States minimum, Russia third. American students: the largest U.S., Canada' s smallest, Russia second and China third. Chinese students: American smallest, Canada third. They refused to give teachers make up the final conclusion: For the area of the four countries of judgment, judgment on each of them only one country.