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宋元时期是我国科技发展的第二个黄金时期，居于世界领先地位的科技成就有（　　）。①沈括创制的“十二气历”②郭守敬的“授时历”③张衡发明的“地动仪”④印刷术、指南针、火药和火器发明和使用

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A、①②③④

B、①②③

C、①②④

D、②③④

参考答案:

C

张衡是汉朝人，可排除。

幼师教师资格

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