你講果D上學期教嘅,考全級頭四分一,下學期教「electromagnetic spectrum」,「lenses ray diagrams for conves lenses」,「images formed by concave lenses and linear magnification lenses」,「temperature,internal energy and heat flow」,「heat capacity and specific heat capacity」,「temperature of a mixture」係下學期測驗拉低左名次,測驗得5分,考試考得好好都冇用.