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Paul Samuelson revolutionized ______ by presenting his students with the most advanced economic thinking at an introductory level. A.to teach economics B.teaching that economics is C.the teaching of economics D.economics is taught 请帮忙给出正确答案和分析,谢谢!

Paul Samuelson revolutionized ______ by presenting his students with the most advanced economic thinking at an introductory level. A.to teach economics B.teaching that economics is C.the teaching of economics D.economics is taught 请帮忙给出正确答案和分析,谢谢!

正确答案:B