- 问题详情:Recently,astudywascarriedouttodeterminewhowasthegreatestAmericanpresident.Sixty-fivepresidentialhistorianstookpartinit,andtheyjudgedthepastforty-twoAmericanleadersbasedontenleadershipqualities,includingpublicpersuasiveness(信服),crisisleadersh...
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