读下图我国第五次人口普查人口年龄结构图,回答下列各题。
读“世界人口增长与土地资源供求”图,完成下列问题:
A:____
B: I'm fine, thanks. And you?
A: I'm OK.____?
B: It's a book.
A:____?
B: It's red.
B: Yes. B-O-O-K , book .
A:____.
B: You are welcome.