TPO10 chinese pottery問題 - 英檢

請問有人知道第五題第3個選項問什麼正確嗎?
因為第三段The earliest ceramics were fired to earthenware temperatures, but
as early as the fifteenth century B.C.,high-temperature stonewares
were being made with glazed surfaces
stoneware應該比earthware早吧??


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