单项选择题

Which of the following is practical but only makes a marginal contribution to solving the problem of green house emissions

A．The use of fuels other than gasoline.
B．Improved energy efficiency.
C．The introduction of less polluting driving systems.
D．Reducing car use by carpooling.
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单项选择题
From the passage we know that the increased use of cars will ______.
A．consume half of the oil produced in the world
B．have serious consequences for the well-being of all nations
C．widen the gap between the developed and developing countries
D．impose an intolerable economic burden on residents of large cities
单项选择题
Which of the following statements is TRUE according to the passage
A．The decline of public transportation accounts for increased car use in western Europe.
B．Cars are popular in western Europe even though fuel prices are fairly high.
C．The reduction of vehicle use is the only sustainable option in densely populated western Europe.
D．Western European oil companies cannot sustain the cost of developing new-type fuels.
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