Twenty-four solar terms are important scientific and technological contributions made by Chinese ancestors to the whole world.

Question 1:C question 2:A question 1: the temperature rise is related to solar radiation. On the one hand, at noon, the height of the sun increases and the illumination increases; On the one hand, the daylight time becomes longer and the sunshine time becomes longer. Question 2: This question adopts the exclusion method, and the period of revolution of the earth remains unchanged; Twenty-four solar terms apply locally; Twenty-four solar terms correctly reflect the changes of seasons, etc. Therefore, before and after Tomb-Sweeping Day, due to the unstable atmospheric circulation, the annual temperature, precipitation, plant growth and animal activities are not completely consistent.