析因法
参考答案：
是通过测定动物维持生长，生产和羽毛等各生理过程，综合生长速度和饲料利用率来估计总的蛋白质和氨基酸需要。
---Will you do me the honor of dancing with me?
--- _____.
A．That’s a good idea.
B．Thank you all the same.
C．I’d love to, but I’m wanted on the phone.
D．Oh, it’s very kind of you.
夹克衫jiá kè shān
