---- We’re organizing a party next Saturday, and I’d like you to come.

---- _______! I have another one that day. Thank you just the same.

A．Good luck

B．What a pity

C．Never do it again

D．Well done

在测尿铜含量时，对一些尿铜改变不明显的患者可采用（）

A.限铜饮食后再测

B.增加铜摄入后再测

C.铜负荷试验

D.青霉胺负荷试验

E.阿托品试验