已知直线l1：ax-y+2a=0与l2：(2a-1)x+ay+a=0互相垂直，则实数a的值为
A．1
B．2
C．0或1
D．0或2
答案：C
根据句意及所给首字母，完成单词。
1. Are you learning to d _____ pictures?
2. There is a big tree in f _____ of Tom's house.
3. Most of the students in our class think math is d _____.
4. My room is on the s _____ floor.
5. The bus will take you there. You can't m _____ it.
目前江西省农村信用社发行了（）
A、借记卡
B、信用卡
C、贷记卡
D、认同卡
