Chinese had mastered the technology of smelting bronze approximately 5,000 years ago and iron tools came into use during the ___________. A. Shang Dynasty B. Song Dynasty C. West Zhou Dynasty D. Tang Dynasty

Chinese had mastered the technology of smelting bronze approximately 5,000 years ago and iron tools came into use during the ___________. A. Shang Dynasty B. Song Dynasty C. West Zhou Dynasty D. Tang Dynasty

正确答案：A