注意:1)词数100左右;
2)可以适当增加细节,以使行文连贯;
3)题目已给出,不计入总词数。
How to protect the traditional Chinese cultures?
A heated discussion was held in my class recently in order to encourage us students to protect the traditional Chinese cultures.
The students
选项
物质
目的
主要实验操作
A
CO、H2
鉴别
点燃,火焰上方罩干冷烧杯,观察现象
B
KNO3(NaCl)
提纯
加90℃水溶解,降温结晶、过滤
C
H2(HCl)
除杂
通过装有碳酸钙悬浊液的洗气瓶,收集
D
MnO2、KCl
分离
溶解、过滤、洗涤、烘干、蒸发结晶
彻底摧毁封建专制制度,使“民主”“共和”思想广为传播的资产阶级革命是( )
看图读一读,判断句子正误。
Hi, I'm Sally. On my way to school, I can see some trees, they're green and brown. I can see some clouds(云). They're white. I can see a bike. It's under the tree. It's blueand black. I can see a yellow cat, it's in the tree. I can hear a plane. I canhear a dog. I can hear a car and a bus, too.