A:No garden is without weed
B:Every little makes a nickel
C:Time waits for no ma
D:The onlooker sees the game best
如图所示的薄壁容器,底面积为100厘米2,装了重24.5牛的水后,水面距容器底部20厘米,则水对容器底的压强为( )
回答问题(简答)。
Lucy is my good friend. She is eleven years old. She is a student. She likes singing. She has a nail pet. Her name is Kitty. Look, Lucy's singing and the cat is dancing. Lucy wants to be a singer when she grows up.
Lucy's mother is a nurse. She works in a hospital. She likes shopping. She usually buys a lot of beautiful clothes at weekends.
小明等五位同学以各自的年龄为一组数据,计算出这组数据的方差是0.5,则10年后小明等五位同学年龄的方差 ( )
①每星期一的早上,学校都举行严格的升旗仪式。
②同学之间即使是好朋友,也要互相关心。