In many English homes people eat four meals a day: breakfast, lunch, tea and dinner. People have breakfast at any time from seven to nine in the morning. They eat porridge，eggs or bread. English people drink tea or coffee at breakfast. Lunch comes at one o'clock. Afternoon tea is from four to five in the afternoon and dinner is about half past seven. First they have soups, and then they have meat or fish with vegetables. After that they eat some other things, like bananas，apples or oranges. But not all English people eat like that. Some of them have their dinner in the middle of the day. Their meals are breakfast, dinner, tea and supper and all these meals are very necessary.

（Ⅰ）求函数f（x）的定义域，并证明其在定义域上是奇函数；

（Ⅱ）对于x∈2，6，f（x）＞lg $\frac{m}{\left(x-1\right)\left(7-x\right)}$ 恒成立，求m的取值范围．

专制主义中央集权的制度是中国古代政治制度的核心，这一制度的建立与完善对中国统一多民族的形成与发展产生深远影响。关于这一历史，结合材料分析：

材料一：为稳定周初的政治形势，巩固疆土，周王根据血缘关系远近和功劳大小，将宗亲和功臣等分封到各地，授予他们管理土地和人民的权利，建立诸侯国。──人教版《中国历史》七年级上册

材料二：从政治高度意义上考虑问题，“始皇”这个称号，对他而言，实在是当之无愧。──郭志坤《秦始皇大传》

材料三：秦和两汉应该是一个连续体，不必当做三个朝代来看待，所谓“汉承秦制”。 ──许倬云《大国霸业的兴废》

材料四：统一只是封建君主专制的表现形式……没有君主集权就不会有地区性的统一；没有地区性的君主集权就不会有全国的封建统一。──刘泽华《中国封建君主专制制度的形成及其在其经济发展中的作用》

请回答：