The weather in Jixian county

Test analysis: qualitative change is the inevitable result of quantitative change, so item 2 is incorrectly stated and cannot be selected; The connection of things can be divided into the connection of self-sufficient things and the connection of man-made things. ① The project statement is incorrect and cannot be selected; ③ ④ The two statements are correct and meet the requirements of the stem, so you can choose. So, the answer is item B.