如图所示电路，电源电动势为E，串联的固定电阻为R₂，滑动变阻器的总电阻为R₁，电阻大小关系为R₁=R₂=r，则在滑动触头从a端移动到b端的过程中，下列描述中正确的是（   ）

2014年6月22日，中、哈、吉三国联合申报的陆上丝绸之路的东段“丝绸之路：长安-天山廊道的路网”成功申报为世界文化遗产，成为首例跨国合作、成功申遗的项目。古代“丝绸之路”的正确路线是（    ）

完形填空A
    Once upon a time, there was a lazy poor man living in a small house with spider webs(网) on the walls and mice running around. People1coming into such a dirty place and the poor man was lonely and2 every day. He thought he was unhappy 3poverty(贫穷).
    One day, the poor man dropped in on4wise old man and asked him for advice about5his life. The old man gave him a vase and said, "This is a magic vase6will bring you 7.
    The poor man looked at the vase 8 He wondered 9a vase in his poor house.10 ，he didn't want to throw away such a beautiful vase, so he brought it home and put it on the table. "11not right for something 12beautiful to be empty." The poor old man looked at the vase and thought. Then some flowers 13into it. That made the vase even14 "How can I have the vase next to a spider web?" he continued. At this, he started to clean the house and paint the walls. His house turned 15 a comfortable place immediately.
    The old man cheered up and he suddenly realized why he was unhappy. From then on, he worked hard and his life got better and better.

“市长热线12345”是市政府建设阳光型、服务型、法治型政府的重大举措，12345，服务找政府，事事有回音，件件有答复；24小时值守，全天候受理市民诉求；一号受理、各级联动、方便市民、服务决策。这体现了（    ）
①政府求真务实的工作作风 ②政府为群众求助或投诉提供了有效途径 ③政府从群众中来，到群众中去的工作方法 ④政府为人民服务的工作态度

为了安全，汽车行驶时驾驶员必须系安全带．汽车上设置了“安全带指示灯”提醒驾驶员系好安全 带．当安全带系好时，相当于闭合开关，指示灯不亮；安全带未系好时，相当于断开开关，指示 灯发光．图中符合上述要求的电路图是（ ）