Food is very important to our health. Everyone needs to eat well if he or she wants to have a strong body.Our minds, like our bodies, always need the best food. This kind of food is knowledge. We start getting knowledge when we are very young.
揭开英国资产阶级革命序幕的历史事件是( )
如图所示的现象中,属于光的色散现象的是( )