Today we 1 only three lessons in the morning. The first lesson is math. It 2 at eight o’clock and finishes at 3 to nine. It is in Room 101. But I don’t like math. Then the second lesson is my favorite 4 —music. It starts at nine o'clock. The 5 lesson in the morning is PE. It starts at ten 6 ten and finishes at five to eleven. We have our lunch at eleven thirty 7 the second floor of dining hall. We have two lessons 8 lunch. Art starts at two and at three o'clock we have a 9 lesson. We can learn a lot of knowledge about China. At about four in the afternoon 10 is over.

①《人口与计划生育法》的施行使计划生育有法可依

②单独、全面“二孩”政策是对该国策的发展与完善

③各项政策的制定均依据社会主义初级阶段的基本国情

④人口政策的日益放开，将导致我国人口爆炸式地增长

世界上的发达国家（美、加、英、法、德、意、日等）主要分布在（   ）

这段话一共有____句话。