在“测定小灯泡的电功率”实验中，请完成空格处的内容．

实验目的：测定小灯泡在不同电压下的____ ．

实验原理：　____ 　．

实验器材：电源、电键、小灯泡、电压表、电流表、____ 、导线若干．

实验步骤：①观察小灯泡，记下小灯泡的____ ．

②画出实验电路图．按照电路图，用笔线代替导线连接实物图．

③按电路图和有关要求连接实验电路．…

实验结果：分别计算出小灯泡的额定功率和实际功率．

   Li Lei is a student1 Class Two, Grade Seven. He likes football very2. He often plays it after school. And he often goes home3. His home is 4the school. His mother doesn't worry 5him.
   One Sunday morning Li Lei goes to a shop6his mother. The shop is very7. There are many things8it. They get some things. Then his mother says to Li Lei, "What do you 9?"
   "I want to get a red blouse," says Li Lei. "A red blouse?" asks his mother. "You are a10. You can’t wear a red blouse."
   Li Lei smiled"OK, please get me football clothes."

如图1，在正方形ABCD中，延长BC至M，使BM=DN，连接MN交BD延长线于点E．