下列人物取得的成就被外国学者认为“使西方望尘莫及并改变世界面

下列人物取得的成就被外国学者认为使西方望尘莫及并改变世界面貌的是( 

①李时珍            ②毕升              ③蔡伦              ④郭守敬

A①②             B②③             C③④             D①④

答案

B

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