(4 points for multiple-choice questions) The basic requirements for selecting topics for pre-school education and scientific research are: the principle of objectivity, the principle of development, the principle of education, the principle of systematization and the principle of combining theory with practice. According to the public inquiry of relevant materials, preschool education research is a branch of educational science, and preschool education research is an integral part of educational research. It is to explore the cognitive process of preschool education science, reveal and discover the objective laws of various phenomena in the field of preschool education, and study the knowledge system of preschool education science. Therefore, we should pay attention to five requirements: the principle of overall objectivity, the principle of development, the principle of education, the principle of systematization and the principle of integrating theory with practice.