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
(3)
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.
内容
- 0
It’s much cheaper to buy a _______ car than a new one.
- 1
When it comes to function, electric cars are ______ as reliable as the average gasoline powered vehicles. A: well B: just C: less D: soon
- 2
Refueling a fuel cell car is more complex and dangerous than with traditional gasoline vehicles.
- 3
A light(轻的) gas, such as hydrogen(氢), is much less dense(稠的) than air is at the same pressure.
- 4
Already there are many ( ) fuel vehicles on the market, powered by anything from solar power to natural gas.