My father wants to give up       _  , but it’s hard for him to      _   .

A．smoke; give up it

B．smoking; give up it

C．smoking; give it up

D．smoke, give it up

下列函数中，y的值随x的值增大而增大的是（ ）

A．y= -3x

B．y="2x" - 1

C．y= -3x+10

D．y= -2x+1