Danny's father is a firefighter. He works at fire station. He's very brave. He h____ short yellow hair. He is tall and thin. His c____ are orange. He likes putting out the f____. Danny's mother is a t____. She works in a school. Her students like her very much. She has a b____ and two dresses. They are purple.

    They are nice. She likes playing games with her students. She is a good teacher.

已知单项式3a^mb²与﹣ $\frac{2}{3}$ a⁴b^n﹣1是同类项，那么m﹣3n=____．

有人这样形容一战的导火线：“一把枪挑起一场战争”。这把枪出现的地点是在（  ）

漫画反映了（　）

①在市场经济中，公有制经济和非公有制经济平等竞争、互相促进

②公有制经济与非公有制经济的地位、作用一样

③非公有制经济已成为推动我国经济发展的主导力量

④我国坚持公有制为主体、多种所有制经济共同发展的基本经济制度