[单项选择]All the cars are tested for {{U}}defects{{/U}} before leaving the factory.
A. functions
B. faults
C. motions
D. parts

[单项选择]All the cars are tested for {{U}}defects{{/U}} before leaving the factory.
A. functions
B. faults
C. motions
D. parts

[单项选择]And the cars are tested for {{U}}defects{{/U}} before leaving the factory.
A. functions
B. faults
C. motions
D. parts

[单项选择]Allthe cars are tested for {{U}}defects{{/U}} before leaving the factory
A. functions
B. faults
C. motions
D. parts

[单项选择]The cars {{U}}traveled{{/U}} 200 miles a day.
A. came
B. covered
C. gone
D. walked

[单项选择]{{U}}While{{/U}} we don’t agree，we continue to befriends
A. whoever
B. where
C. Although
D. Whatever

[单项选择](Looking through the window) at all the cars on the road, (the traffic) (was getting) much (heavier) than it had been an hour ago.
A. Looking through the window
B. the traffic
C. was getting
D. heavier

[单项选择]George, like all boys,（）cars very much.
A. like
B. are liking
C. liking
D. likes

[单项选择]The {{U}}replacement{{/U}} of air-polluting cars by non-pollution cars will take some time.
A. supplement
B. substitute
C. replenishment
D. complement

[单项选择]To make cars, Henry first of all needed ______.
A. his wife’s encouragement
B. a lot of money to buy equipment
C. engineers and technicians
D. to produce a gasoline engine that would be the power for his car

[单项选择]

Cars account for half the oil consumed in the U. S. , about haft the urban pollution and one fourth the greenhouse (温室) gases. They take a similar toll (损耗) of resources in other industrial nations and in the cities of the developing world . As vehicle use continues to increase in the coming decade, the U.S. and other countries will have to deal with these issues or else face unacceptable economic, health-related and political costs. It is unlikely that oil prices will remain at their current low level or that other nations will accept a large and growing U. S. contribution to global climatic change.
Policymakers and industry have four options: reduce vehicle use, increase the efficiency and reduce the emissions of conventional gasoline-powered vehicles, switch to less harmful fuels, or find less polluting driving systems. The last of these -- in particular the introduction of vehicles powered by electricity -- is ultimately the only sustainable option. The other alternat
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.