問題詳情
【題組】51 The structure of limestone encourages cave formation because limestone is
(A) able to absorb water.
(B) often exposed to the air.
(C) formed in beds and layers.
(D) often tilted by movements in the earth.
參考答案
答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)