----I’ve finished cleaning all the furniture in the room.

----I don’t think so. What about ____ on the balcony?

A．the one

B．it

C．that

D．those

检验种子在呼吸时产生了二氧化碳应当用下列哪种方法（　　）

A．碘酒

B．澄清的石灰水

C．燃烧的蜡烛

D．快熄灭的竹签