经度相同的两个地方（　　）

对近代社会两大阶级的对立与斗争进行了唯物主义科学论述的著作是(  )

图示电路中，电源电压不变，R₁为定值电阻，R₂为滑动变阻器．闭合开关S，移动滑片P，多次记录电压表示数U和对应的电流表示数I，则绘出的U﹣I关系图象正确的是（　　）

   For many young people sport is a popular part of school life. Being in one of the school teams and playing in matches is very important. If someone is in a team it means a lot of extra practice and often spending a Saturday or Sunday away from home, as many matches are played then.
   In can also involve travelling to other towns to play against other school teams and then staying on after the match for a meal or a drink. Sometimes parents, friends or the other students will travel with the team to support their own side.
   When a school team wins a match it is the whole school. It means the whole school feels proud, not only the players. It also means a school becomes famous for being good at certain sports and students from that school may end up playing for national and international teams, so that the school has some really famous names.

实验器材如图所示：一个电源，L₁、L₂两个完全相同的灯泡，A₁、A₂两个电流表，一个开关，若干条导线．请你设计一个电路，要求：两个灯泡L₁、L₂并联；两个电流表接入电路，且A₁的示数大于A₂的示数．