Fuel scarcities and price increases ______ automobile designers to scale down the largest
A.persuaded
B.prompted
C.imposed
D.enlightened
A.persuaded
B.prompted
C.imposed
D.enlightened
Hydrogen ______.
A.is a widely-used fuel
B.is not yet in general use as a fuel
C.is not a particularly easy fuel to store
D.is a more economical fuel than wind energy
Spark plugs cause the fuel mixture to ______.
A.compress
B.remove waste
C.burn
D.to enter the cylinder
Fuel enters the cylinder in the ______.
A.first stroke
B.second stroke
C.third stroke
D.the final stroke
B.turn aside
C.turn away
D.turn out
The best title for the passage may be ______.
A.Garbage and the Earth
B.Fossil Fuel and Garbage
C.Land and Garbage
D.Garbage? Energy Source
A.the;the
B.the;/
C./;the
D./;/
One of the measures to keep a car within the speed limit is______.
A.to add less fuel to the engine
B.to limit the use of accelerator
C.to push down the accelerator pedal
D.to remove the pedal from accelerator
This passage is primarily about ______.
A.the greenhouse effect
B.the burning of fossil fuels
C.the potential effect of air pollution
D.the likelihood of a new ice age