1．25℃、101 kPa下，碳、氢气、甲烷和葡萄糖的燃烧热依次是393.5 kJ/mol、285.8 kJ/mol、890.3 kJ/mol、2800 kJ/mol，则下列热化学方程式正确的是( )
A．C(s)+1/2O2(g)==CO(g) △H ＝－393.5 kJ/mol
B．CH4(g)+2O2(g)== CO2(g) + 2H2O(1) △H ＝－890.3 kJ/mol
C．2H2(g)+O2(g)==2H2O(1) △H ＝ + 571.6 kJ/mol
D．1/2C6H12O6(s) + 3O2(g) === 3CO2(g) + 3H2O(g) △H ＝－1400 kJ/mol
