—No, Tom and I aren't in the same class.
A.NH3 B.H2O C.HCl D.CH4 E.C2H6
F.N2
某地一大宅院门的灰墙上一副墨字对联依稀可辨:“放开肚皮吃饱饭,鼓足干劲搞生产”,横批是“多快好省”。这幅对联最早应该书写于( )
请回答下面的问题.