--- He is fifteen years older than you.

--- _______  Love has nothing to do with age.

A．What for?

B．How about it?

C．So what?

D．How come?

下列关于老年人结构变化的叙述错误的是

A．体内水分减少

B．固体成分减少

C．器官细胞数减少

D．脂肪增多

E．钾含量增多