I went to school without ____ (eat) anything this morning.
We live on the e____and it's our only home.We should try our best to protect it from the pollution.
如图所示,A、B是两个完全相同的的灯泡,L是一个自感系数较大的理想电感线圈,C是电容较大的电容器。关于A、B亮度情况的说法中不正确的是
( )
人的神经系统是由____、____、____组成。