马克思主义哲学以一种批判的态度对人与世界现实关系作出评价。要改变世界,就必须对现存世界持批判的态度,在对现实的批判中确立作为现实之否定形态的理想,再通过实践把理想转变为新的现实。材料体现了马克思主义哲学的特点是( )
A:物质性
B:科学性
C:革命性
D:直接现实性
如图是一个利用四边形的不稳定性制作的菱形晾衣架.已知其中每个菱形的边长为20cm,墙上悬挂晾衣架的两个铁钉A、B之间的距离为 cm,则∠1等于( )
It is fairly common in Africa for there______ a group of expert musicians surrounded by others who also join in the performances.
We all should____ ____ ____ ____ saving endangered animals.
- How long does it take to get to the airport?
- Forty minutes. But it's foggy today. I'm not sure _________ the highway will be closed soon. Let's set off earlier.