問題補(bǔ)充：
單選題
A real farming book often ________ advice ________ many subjects, such as growing grain, keeping animals．A.contains; inB.includes; onC.has; aboutD.holds; for
網(wǎng)友答案：
熱心網(wǎng)友 1樓
B解析表示“包含……內(nèi)容”時用include, advice on sth．意為“有關(guān)……的建議”。
