2012年12月英語四級考試完形填空精選題（13）

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　Today the car is the most popular sort of transportation in all of the United States.

　　It has completely __1__ the horse as a __2__ of everyday transportation.

　　Americans use their car for __3__ 90% of all __4__ business.

　　Most Americans are able to __5__ cars.

　　The average price of a __6__ made car was ,050 in 1950, ,470 in 1960 and up to ,750 __7__ 1975.

　　During this period American car manufacturers set about __8__ their products and work efficiency.

　　As aresult, the yearly income of the __9__ family increased from 1950 to 1975 __10__ than the price of cars.

　　For this reason __11__ a new car takes a smaller __12__ of a familys total earnings today.

　　In 1951 __13__ it took 8.1 months of an average familys __14__ to buy a new car.

　　In 1962 a new car __15__ 8.3 of a familys annual earnings, by 1975 it only took 4.75 __16__ income.

　　In addition, the 1975 cars were technically __17__ to models from previous years.

　　The __18__ of automobile extends throughout the economy __19__ the car is so important to American.

　　Americans spend more money __20__ keeping their cars running than on any other item.