What club does Tony want to join?
A:The Dance Club.
B:The Music Club.
C:The Chinese Club.
妈妈叫小娜去买5个苹果,如果一个苹果重2斤,问小娜买的苹果一共多少斤?
4.42÷(0.25×6.8)=( )
如图所示,乘坐游乐园的翻滚过山车时,质量为m的人随车在竖直平面内旋转,下列说法正确的是( )