【单选题】— I can't understand why my mother always keeps me hard at my work. — When you ____ children of your own, you will understand. [ ]
【简答题】产生式的基本形式是什么?它与谓词逻辑中的蕴含式有什么共同处及不同处?
【简答题】vi. (~ to / with) obey sth. such as a rule or law 遵照;遵守;服从
【简答题】I understand why my associate is being held,but what exactly am I being charged with?