如图所示电路，电源电压为6伏，R1=R2=2欧，当S断开时R1两端电压是____ 发布时间：2017-04-22 13:14 │ 来源：www.tikuol.com 题型：填空题 问题： 如图所示电路，电源电压为6伏，R1=R2=2欧，当S断开时R1两端电压是___________伏；当S闭合时R1两端电压是___________伏，R2两端的电压是___________伏。
题型：填空题 完形填空。 Marc sat next to me when we were in Hill Junior School. He had a serious 1 in communicating with people. One always had to guess what he was saying. 2 ，most of my classmates did not like to be with him because his hands and shirts were always. 3 I tried to let him know the importance of being clean by 4 him several times a day to wash his hands. But he just could not understand. One day , our teacher Miss West walked up to Marc. 5 saying anything, she took Marc to the washroom. Slowly , Miss West washed his 6 and told him that he should keep himself clean. She did that every day for one month. 7 ,Marc understood. Miss West's love has given me a .good example to follow when I 8 my job. I always remember to teach my students by showing them the right 9 to do things. And most important of all, I always remember to give them 10 to leam and to grow up.( )1. A. question ( )2. A. Instead ( )3. A. dirty ( )4. A. talking ( )5. A. With ( )6. A. face ( )7. A. At last ( )8. A. did ( )9. A. ways ( )10.A. more advice B. problem B. However B. clean B. saying B. Without B. feet B. At first B. am doing B. answers B. less advice C. accident C. Besides C. new C. speaking C. After C. shirts C. Such as C. have done C. time C. more time D. hobby D. Except D. old D. telling D. Above D. hands D. So far D. am going to doD. food D. less time 查看答案
题型：填空题 先选择条件，再解答。盒子中装了红、黄、蓝、白四种颜色的玻璃球，小明数得红球有12粒，______，白球有多少粒？A．四种球共50粒B．红球是白球的6倍C．黄球和白球一样多D．蓝球20粒黄球15粒 查看答案
