問題詳情
9. These prairies are traversed by ridges, which facilitates irrigation, and are under-laid by an _____subsoil, which facilitates both effective storage and drainage.
(A) impervious
(B) impetuous
(C) impudent
(D) incongruous
參考答案
答案：A
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)