(____)A. I'd like some water. I'm thirsty!
(____)B. I'd like a sandwich and a hamburger.
(____)C. I love beef noodles. They're delicious.
(____)D. Her favourite drink is milk.
(____)E. My favourite food is chicken.
组别
1
2
3
4
5
馒头碎屑
或馒头块
适量馒头碎屑
①
唾液或清水
2mL唾液
2mL清水
②
温度
37℃
0℃
100℃
加入碘液
5滴
(注:馒头中的主要成分是淀粉;淀粉遇碘会呈现蓝色,可用此颜色反应来鉴别淀粉。)