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The private automobile (汽车) has long played an important role in the United States. In fact, it ...

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Americans Annual Consumption of Gas  Importance of Energy Conservation  Energy Problems  Automobile-Americas Thirsty Machine  
an automobile.  a production line.  a part of an automobile engine.  a disassembly line.  
with more effective transportation of consumer goods  with better educational programs and planning techniques  with an efficient system of inner-city transportation  with forceful limitation of the use of the automobile  
Alternate sources of energy must be found  Car pools help to solve some of the energy problem  The automobile uses large amounts of gasoline  Great efforts have been made to solve the energy problem  
design  performance  race  exhibition  
the airplane  the automobile  both the plane and the automobile  neither the plane nor the automobile  
the manufacture of the automobile requires much energy  gasoline is more expensive than home heating oil  automobile speed lowers energy efficiency  oil resources could someday run out  
automobile  timber  bamboo  
small cars use energy efficiently  anti-pollution devices on automobiles are not effective  Americans have to import a great quantity of gas each year  Americans waste energy  
authority  condition  schedule  appointment  
the manufacture of the automobile requires much energy  gasoline is more expensive than home heating oil  automobile speed lowers energy efficiency  oil resources could someday run out  

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