Thank you for your present. It’s so beautiful.______.

A．No, thanks.

B．Please don’t say so

C．It is not good enough

D．I’m glad you like it.

为了测定氧气在空气中的体积分数，实验室采用燃烧法除去一瓶空气中的氧气，应选用的是 [ ]

A. 红磷

B. 木炭

C. 蜡烛

D. 硫粉