阅读理解     

 My name is Dora.I’m American and I’m thirteen.I’m a student in No.7 Middle School.I like music very much.I can play two instruments— the guitar and the piano.I play them very well and I’m on the school art club.

Jeff and Michael are my brothers.They are students,too .But we aren’t in the same school.They like sports.Jeff plays basketball and soccer           very well.Michael swims and plays ping-pong very  well.I am not good at sports.They help me with sports after school.

We live in London with our parents now.My mother is an English teacher and my father is a musician.My mother swims well.My father can play the violin.

材料一：……以天下之广，四海之众，千端万绪，须合变通，皆委百司商量，宰相筹划，于事稳便，方可奏行。岂得以一日万机，独断一人之虑也。且日断十事，五条不中，中者信善，其如不中者何？以日继月，乃至累年，乘谬既多，不亡何待！

——《贞观政要•政体》

材料二：自秦始皇置丞相，不旋踵而亡。汉、唐、宋因之，虽有贤相，然其间所用者多有小人专权乱政。我朝罢相，设五府、六部……分理天下庶务，彼此颉颃不敢相压，事皆朝廷总之，所以稳当。

——《明史•记事本末》

请回答：

关于京剧的说法不正确的是

某同学自制的简易电动机示意图如图所示．矩形线圈由一根漆包线绕制而成，漆包线的两端分别从线圈的一组对边的中间位置引出，并作为线圈的转轴．将线圈架在两个金属支架之间，线圈平面位于竖直面内，永磁铁置于线圈下方．为了使电池与两金属支架连接后线圈能连续转动起来，该同学应将（　　）