问题
填空题
在动物体内不能合成或合成速度不能满足机体需要,必须由饲料供给的氨基酸叫()。
答案
参考答案:必需氨基酸
在动物体内不能合成或合成速度不能满足机体需要,必须由饲料供给的氨基酸叫()。
参考答案:必需氨基酸
口语应用。(每小题1分,共5分) 根据对话内容,选用方框中适当的句子,补全对话。
A:Good morning. 1 B:Yes, please.I’d like to buy a tie for my father as his birthday gift A: 2 B:Blue.My father likes blue best. A:How abut this one? B:Oh, it’s very nice. 3 A:50 yuan B:That’s too expensive.I don’t have enough money. 4 A:Yes.This light blue one is only 30 yuan. B:Well, this one looks very good.And the price is OK. 5 . |