— ________does Sam go to school?
— At 7: 30.
A:What time
B:What
C:Where
D:How
如图,点A,B是棱长为1的正方体的两个顶点,将正方体按图中所示展开,则在展开图中A,B两点间的距离为( )
I went to the bookstore by bus yesterday .(对划线部分提问)
____ ____ ____ ____ ____ the bookstore yesterday ?
下列函数中,不是二次函数的是( )