問題詳情
【題組】75. According to the last paragraph, plate tectonics is a process _______.
(A) that hardly ever alters the face of the Earth
(B) in which the entire Earth’s surface has been
(C) that has been known only since two decades ago
(D) that has contributed little to our understanding of
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)