Identify the conclusion of this sentence: (1) Hydrogen is the mose common element in the universe. (2) Since it’s so abundant, (3) cars powered by hydrogen fuel cells will eventually be so much cheaper than gasoline-powered car
举一反三
- Hydrogen is the most _____ element in the known Universe.
- Because the fuel cell is so much more efficient that the internal combustion engine, fueling a fuel cell car can cost around the same as fueling a gasoline car.
- Hydrogen, which is ______ than off, is pretty easy to produce and does no harm to the environment. A: much energy more abundant source B: an energy source more abundant C: a much more energy abundant source D: a much more abundant energy source
- （ ）is the most abundant chemical element in plants and animals. A: Oxygen B: Carbon C: Hydrogen D: Nitrogen
- It’s much cheaper to buy a _______ car than a new one.