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.
长期患病的人,身体逐渐消瘦,其代谢情况是____作用大于____作用。