--Everyone says that there is no chance for me to win the competition.

--- ______. Believe in yourself.

A．Maybe

B．That’s all right

C．Don’t let them get to you

D．OK

技师焙烧铸圈时将铸道口向上放置可能造成铸件出现

A．砂眼

B．气孔

C．缩孔

D．冷隔

E．毛刺