单项选择题

The underlined word "hassles" in the passage (Line 3, Par

A．3) probably means ______.A. agreementsB. worriesC. disadvantagesD. quarrels
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单项选择题
Which of the following is the best solution to the problems mentioned in the passage
A．The designing of highly efficient car engines.
B．A reduction of vehicle use in cities.
C．The development of electric cars.
D．The use of less polluting fuels.
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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