下列属于生物的是（　　）

A．慢慢长大的钟乳石

B．光芒四射的礼花

C．缓缓游动的蜗牛

D．千姿百态的珊瑚

单项选择。

— Would you like some more? 

— ______, I am full. [ ]

A. Yes, please

B. I'd love to

C. No, I wouldn't

D. No, thanks