(1) 請問從素養導向教學的觀點看來，一般高中生學習繞射的原因為何?(2 分)

15. This question is about an ideal gas. The graph shows how the pressure P of a sample of fixed mass of an ideal gas varies with volume V. The temperature of the gas at point A is 85 °C. The gas can change its state to that of point C either along route ABC or route ADC. Compare, without any calculation, the work done and the thermal energy supplied along route ABC and route ADC.