以下哪一项不是网络数据挖掘的技术之一（）。
A.内容挖掘
B.网络结构挖掘
C.网络服务器挖掘
D.网络使用挖掘
参考答案：D
根据括号里所给的汉语写出英语单词。
1. I am in ________ (班) Six, Grade Seven.
2. Tom and I are ________ (同学). We are in the same class.
3. My mother _________ (工作) on a farm. She is a farmer.
4. We usually eat rice and vegetables for _________ (晚餐).
5. _________ (熊猫) are my favorite animals. They are cute.
