The sales _____ steadily, the factory needs an increasing supply of raw material.                                                   

A．have gone up

B．are going up

C．gone up

D．going up

“统治阶级有统治阶级的道德。被统治阶级有技统治阶级的道德”。这句话说明了()

A、道德的时代性

B、道德的普遍性

C、道德的阶级性

D、道德的抽象性