请问：如何选对TOPIC SENTENCE

请问，英语自考的英语写作基础里面有一题是选Topic sentence的，共有ABCD四个句子做为选项，找一个最合适的句子做为中主题句。请问TOPIC SENTENCE有什么特点？这是一些TOPIC SENTENCE， 我做题时选对率是1/10，郁闷。马上要考试了，我想弄清楚它的特点。请帮忙观察，谢谢。Books are one of the necessities of human beings in a sense Advertisements can be useful by providing us direct, comprohensive and detailed information Honesty is the best policy for everyone. Dissatisfaction leads to progress in some way. Sports can help everyone to keep healthy. Music is an important part of my life. Smoking should be given up because it is harmful to people. Computer make our daily life better and better.