問題詳情
【題組】18 According to the passage, why does someone need to make soil?
(A) It takes a hundred years to make one inch of topsoil.
(B) David has a degree in plant and soil science.
(C) There are places lacking fertile soil.
(D) It is a family business.
參考答案
答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)