問題詳情

【題組】5. The word 'They" in line 21 refers to
(A) crystalline rocks
(B) the flanks
(C) the Primitive mountains
(D) layered sedimentary rocks

參考答案

答案：D
難度：適中0.510067
統計：A(16),B(10),C(46),D(76),E(0)