下列反应不属于缓慢氧化的是（ ）
A．气球爆炸
B．菜刀生锈
C．人的呼吸
D．农家肥料的腐熟
答案：A
根据所给意思写出相应的单词。
1. The (墙) is white.
2. I can see (十个) clocks.
3. Our desks are (绿色).
4. They are having (英语) class.
5. Her (衬衫) is beautiful.
计算（m+3n）2﹣（3m+n）2的结果是[ ]
A．8（m﹣n）2
B．8（m+n）2
C．8n2+8m2
D．8n2﹣8m2
