At present, our country's energy mainly depends on fossil fuels, which are non-renewable resources. Therefore, the development and utilization of new energy is particularly important.

(1) We should cherish fossil fuels because they are both fuels and important chemical raw materials, and they are non-renewable, which include natural gas, coal and oil;

(2) In the rational use of fossil fuels at the same time, we should make efforts to seek the development of new energy sources, such as geothermal energy, tidal energy, wind energy, etc., and utilize them to generate electricity;

(3) A. Ethanol can be produced through grain

(3) A, ethanol can be produced by fermentation of grain, so the source is wide, so it is correct;

B, alcohol is a renewable energy source, so it is correct;

C, ethanol combustion products are water and carbon dioxide, of which carbon dioxide will cause the greenhouse effect, so it is wrong.

The choice of C.

(4) According to the law of conservation of mass, the chemical equation of the reaction is CH3CH2OH + 3O2 + 4NaOH

? Catalyst? .

?

....