問題詳情
【題組】11 The author mentions clover in tine 12 as an example of a
(A) plant that is typically grown on organic farms
(B) crop that can be rotated and used as fertilizer
(C) crop that replaces both nitrogen and trace elements in soil
(D) plant that has been thoroughly depleted of nutrients in recent years
參考答案
答案：B
難度：適中0.576923
統計：A(6),B(45),C(10),D(16),E(0)