经过原点的抛物线是（　　）

A．y=2x²+x

B．y=2（x+1）²

C．y=2x²-1

D．y=2x²+1

—Do you know where my blue coat is ?

—Don’t bother to look for it. I’m sure it will_____

some day.

A．turn out

B．turn on

C．turn up

D．turn over