下列物体中不是光源的是( )
A:太阳
B:月亮
C:手电筒
D:点燃的蜡烛
请用正楷字体在下图“下联”空白处补全对联。
在中枢神经系统里,功能相同的神经元细胞体汇集在一起构成( )
—Jack w____a whole afternoon in playing computer games.
—That's too bad.He should spend more time studying.