A:how did Tom come to school
B:why was Tom late for school
C:when Tom would get to school
D:what will Tom do at school
如图所示几何体的左视图是( )
对于下列命题:(1)关于某一直线成轴对称的两个三角形全等;(2)等腰三角形的对称轴是顶角的平分线;(3)一条线段的两个端点一定是关于经过该线段中点的直线的对称点;(4)如果两个三角形全等,那么它们关于某直线成轴对称。其中真命题的个数为( )
对《酬乐天扬州初逢席上见赠》内容的理解,错误的一项是( )