問題詳情
【題組】49. According to the passage, lunar researchers have focused mostly on
(A)the possibility of finding water on the Moon
(B)the lunar regolith
(C)cataloging various land formations
(D)craters and their origins
參考答案
答案：D
難度：適中0.625
統計：A(0),B(1),C(2),D(5),E(0)