农产品质量安全监管的重要内容是？（）
A.农产品产地污染源头预防
B.农业面源污染治理
C.农作物资源保护
D.农业生产过程清洁
参考答案：A, B, D
Getting good marks is about _______ to prepare for and to write exams but not just about ______facts you know.
A．what; what
B．how; that
C．how; what
D．what; which
冯玉祥五原誓师
