問題詳情

【題組】33. According to the passage, what in the rock strata is a clue to geologists of a past ice age？
(A) Ice
(B) Melting glaciers
(C) U-shaped valleys
(D) Substances from other areas

參考答案

答案：D
難度：適中0.631579
統計：A(2),B(1),C(3),D(12),E(0)