Analysis of test questions: Shijiazhuang is one of the first national "smart city" pilots, which embodies the connection between universality and particularity of contradictions; The creation of "smart city" finally improves the happiness of citizens and the sustainable development of the city, which shows that practice is a conscious and purposeful activity of human beings, which is correct and in line with the meaning of the topic; Item 1 is unscientific, and the nature of things is mainly determined by the main aspects of the main contradiction; (3) Wrong, because innovation is the soul of national progress, and the correct answer to this question is B.