读句子或对话选择对应的图片。 ( ) 1. Look at the elephant. It's big. B. ( ) 2. The giraffe is tall. C. ( ) 3. Where is the bird? It's in the box. D. ( ) 4. Look at the panda. It's cute. E.
【简答题】(1)______俗称酒精,分子式为______,其分子中含有的官能团名称是______. (2)发酵法酿酒的过程可简略表示如下: (C 6 H 10 O 5 ) n +nH 2 O 催化剂 nC 6 H 12 O 6 C 6 H 12 O 6 酒化酶 2C 2 H 5 OH+2CO 2 ↑; 上述反应中C 6 H 12 O 6 的名称是______,实验室中常用______或氢氧化铜悬浊液来检验...