—_______But I'm busy studying for my test.
A:Don't mention it.
B:I'd love to.
C:That's all right.
D:My pleasure.
商朝是我国青铜文化的灿烂时期,著名的巨大的青铜器和造型奇特的青铜器分别是( )
若二次根式2x-1有意义,则x的取值范围是____.