The largest and smallest states of the United States are ________.
A、AlaskaandRhodeIslandA
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InCanadathefederalgovernmentshavealwaysbeenformedby________.
TheaveragelifeexpectancyoftheRedIndiansis________.
WhenwasthereferendumonQuebec'sfuturestatusheldinCanada?
ThelongestriverinCanadais________.
TheNewFrontierandWaronPovertywereputforwardrespectivelyby________.