电气设备分为高压和低压两种，对地电压在（）称为高压电气设备.
A、250V以上；
B、250V以下；
C、220V以上；
D、220V以下。
参考答案：A
阅读理解，回答问题。
I am a Chinese girl. My name is Wang Li. I am thirteen. I have two good friends. They are Lucy
and Alan. Lucy is a girl. She is not tall (高的). She is twelve. Alan is a boy. He is very tall and strong
(强壮的). He is twelve, too.
1. What's the writer's name?
______________________________
2. Is Lucy tall?
3. Is Alan a boy?
4. How old is Alan?
5. How many friends does Wang Li have?
生地黄和玄参除了清热凉血，还能（）
A.定惊
B.养阴
C.活血
D.散结
E.透疹
