鞣质的定性检识反应很多,最基本的检识反应是使明胶溶液变混浊或生成沉淀。
参考答案:对
根据括号里所给的汉语写出英语单词。
1. My sister ________(有) a small mouth, but I have a wide one.
2. His _________(脚)are big, but mine are small.
3. Whose pen is this? It's ______(她的).
4. I have a _________(黄色) coat.
5. What color is your _______(衬衣)? It's white.
It was in the school ___ he studied ten years ago ____ he gave a wonderful speech.
A.that; that
B.where; where
C.that ; where
D.where ; that