31 The land is a storehouse of ______ for all kinds of plants, and its reserve of nutrients is essential to any successful agriculture.
(A) facilities (B) fertility (C) nuance (D) pesticides
The land is a storehouse倉庫 of ______ for all kinds of plants, and its reserve儲備,保存;保留、預約,預訂 of nutrients養分 is essential to any successful agriculture農業. (A) facilities中文:設備、工具 (B) fertility中文:肥沃 (C) nuance中文:配色