自然界中,有的物体属于生物,有的物体属于非生物。下列属于生物的是( )
A:会弹琴的机器人
B:恐龙化石
C:蘑菇
D:珊瑚礁
Do you have a School Day _________ your school?
_______ helps governments and families make the world a better place for children