我自己经营了一个小卖部，想参加社保，不知能参加哪些险种？
参考答案：
目前成都个体户暂时只能参加养老保险、医疗保险及生育保险。
用所给单词的适当形式填空。
1. I don't have __________ (some) homework today.
2. The TV is too __________ (loud).
3. Danny is __________ (play) the piano.
4. Let __________ (I) think.
5. Is Jenny a good violin __________ (play).
6. I play the erhu three __________ (time) a week.
7. Thanks for __________ (help) me.
8. I'm going to __________ (turn) it up.
9. Here are some other __________ (thing) you can do.
10. What did you __________ (like) best?
数据仓库是决策支持系统的另一种技术，以下不属于数据仓库数据的特点是
A．面向主题的
B．集成的
C．实时处理的
D．反映历史变化的
