Topics of Traditional Fuel Crisis in Song Dynasty

A, ethanol gasoline is mixed with a certain proportion of ethanol in gasoline, ethanol combustion products are pollution-free, and gasoline combustion is polluted, so A is wrong;

B, ethanol belongs to alcohol, and gasoline is a mixture of hydrocarbons with different components, so B is wrong;

C, ethanol itself contains oxygen atoms, and the oxygen consumption of ethanol gasoline is lower than that of gasoline with the same quality, so C is wrong;

D, starch fermentation can produce ethanol, ethanol is renewable energy, so D is correct.

So choose D.