A ) the analyse of normal state specific heat of mgb2 shows : there is a strong einstain mode at about 310k . therefore its lattice specific heat composes of debye and einstain contribution 1 )对mgb2正常态比热的分析表明,在310k左右有一支强的爱因斯坦模,因此其晶格比热应由debye项和爱因斯坦项构成。