某几何体的三视图如图所示,则该几何体的体积等于( )
A:32
B:2
C:52
D:3
广口瓶被称为气体实验的“万能瓶”,是因为它可以配合玻璃管和其它简单仪器组成各种功能的装置.下列各图中能用作防倒吸安全瓶的是( )
A.Here you are.
B.Yes, I want a bird.
C.That's right.
D.I'm six.
E.How nice!
(____)1.Two and three is five.
(____)2.This doll is for you.
(____)3.I want a pencil.
(____)4.How old are you?
(____)5.Please make a wish, Mike.
下列运算中,正确的是( )
①统一蒙古各部 ②建立蒙古政权 ③灭亡南宋 ④定国号为元