問題詳情

【題組】51. Glassmaking methods did not change much until_.
(A)Europeans made church windows
(B) Egyptians began making glass
(C)Romans invented windows
(D) the 20th century

參考答案

答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)