若“淀粉→麦芽糖→葡萄糖→糖原”表示某生物体内糖类的某些转化过程，则下列说法正确的是（　　）

①此生物是动物，因为能将淀粉转化为糖原；

②上述关于糖的转化不可能发生在同一生物体内，因为淀粉和麦芽糖是植物特有的糖，而糖原是动物特有的糖；

③此生物一定是植物，因为它能含有淀粉和麦芽糖；

④淀粉和糖原都是储存能量的多糖，麦芽糖是二糖．

漫画《自信》说明了（  ）

1. What was his ____ (反应) to your answer?

2. We have bought lots of ____ (设备) for our new lab.

3. The lock has ____ (生锈) and needs oil.

4. I came to the ____ (结论) that he had been lying.

5. He kept his ____ (平衡) with his arms on top of the wall.

6. The ____(沸腾的) kettle was giving off steam.

7. As a result of pollution，there are many dead fish ____ (漂浮) on the water.