19世纪欧洲工人运动的发展需要科学理论的指导。马克思、恩格斯在深入工人运动的基础上，进行了大量的创作活动，先后撰写了《关于费尔巴哈的提纲》《德意志意识形态》和《共产党宣言》等光辉著作。这体现了马克思主义哲学的基本特征是（ ）
以椭圆x224+y249=1的焦点为顶点、顶点为焦点的的双曲线方程是( )
A. Is the man your father? B. No, I don't.
C. What are you going to be one day? D. What does he do?
E. Who's the man? F. Where does he work?
G. Does your father work in a car factory?
A:Hello. ____
B:Yes, he is my father.
A:____
B:He is an engineer.
B:He works in a car company. He likesdrawing pictures.
A:Do you like drawing pictures?
B:____ I like singing.
B:I'm going to be a singer one day.
