题目

 — We’d better go downstairs right now for lunch.    -- ____ They serve food 24 hours a day.   A. Take your time.   B. No way!                  C. Hurry up!              D. It doesn’t matter. 答案：A8．下列营养物质中，能为人体生命活动提供能量的是（　　）①糖类  ②脂肪  ③蛋白质  ④水  ⑤无机盐 ⑥维生素．A．①③⑤⑥B．①②③⑥C．①②③D．①②⑤