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重庆电力高等专科学校:《大学英语》Unit 2 srveys, Surveys and More Surveys

Related Information 1. 1. Opinion polls A survey of porential voters to determine their mood and attempt to determine the outcome of the election. Opinion polls started to play a part in American polities in the 1930s when the Gallup poll predicted the election of President Roosevelt in 1936.
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