尔雅 智慧树 mooc

ThomasJefferson’sattitude，thatis，afirmbeliefinprogress，andthepursuitofhappiness，istypicaloftheperiodwenowcall().AAgeofEvolutionBAgeofRomanticismCAgeofRegionalismDAgeofReason

  尔雅 智慧树 mooc


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