碘是一种由碘分子构成的非金属，某同学利用碘进行了如图所示的实验：①把少量的固体碘放在湿润的馒头上，发现馒头会变蓝色；②再取少量的碘溶解在水中，用馒头去蘸取碘液，发现馒头也会变蓝色。则：

绍兴是中国著名的“酒乡”．绍兴黄酒，为世界三大古酒之一，多次获得国际金奖．绍兴黄酒是一门综合性的发酵工程学，涉及到多种学科知识．它的酿造过程可以概括为：选料→发酵→压榨→勾兑→澄清→煎酒等步骤．（部分数据为方便计算略做处理），发酵即淀粉→葡萄糖→酒精的过程，请你在下列化学方程式中的横线内填写化学式：

（C₆H₁₀O₅）_n（淀粉）+nH₂O→nC₆H₁₂O₆（葡萄糖）

C₆H₁₂O₆（葡萄糖）→2 ____　+2CO₂↑

请先阅读下面短文，掌握其大意，然后用方框所给的词的适当形式填空，每个词限用一次。

 Animals are important in Indian culture and are treated in a special way. For example, a lot of elephants aren't ____     . they are domesticated(驯养). They aren’t kept as pets, but as working animals. Every working elephant   ____  its own keeper. An elephant and its  keep meet for the first time when they are both young, and they grow up together. In fact, their relationship continues for the rest of the elephant's   ____  perhaps 40 years. Lots of elephants work in the forest, moving heavy ____    when they are cut down. Some give rides to tourists, or   ____    people during celebrations and festivals. Keepers take excellent care of their elephants , feeding them   ____ and giving them a bath at the end of the working day.

____ special animal in India is the cow. Cows are protected animals, ____    they aren't kept on farms or killed for food, although people do use their milk. So in India you can often see cows walking around towns and cities, and nobody tries  ____   them. If they sit down in the middle of the road, people  ____  drive around them! Do you think it's interesting?