Due to frequent haze weather

Test analysis: According to the information of "comprehensive means", "coordinated emission reduction" and "energy structure" in the material, it can be known that the material mainly reflects the system optimization method. ① ② The questions are correct, so A is selected. The material mainly emphasizes subjective initiative, so ③ it is not selected; Focusing on accelerating the adjustment of industrial and energy structure embodies the dialectical unity of grasping the main contradiction rather than the primary and secondary aspects of contradiction, so ④ it is not selected.