下列反应一定属于非自发进行的是 

A．N2(g) + 2O2(g) = 2NO2(g) △H =" +" 67.7 kJ/mol

B．CaCO3(s) ＝CaO(s) ＋CO2(g) △H =" +" 1921.8 kJ/mol

C．C6H12O6 ( s ) + 6O2 ( g ) = 6CO2 (g) + 6H2O ( l )△H =" -2804" kJ/mol

D．2CO(g)+O2 (g)=2CO2(g)△H= －566 kJ/mol