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请以“金融危机的原因分析”为话题作文

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根据以下内容回答题：

Today in the United States．the car is the most popular sort of transportation in all of the United States．It has completely(1)the horse as a means of everyday transportation．Ameri-cans use their car for nearly 90 per cent of all personal trip．

Most Americans are able to buy ears．The average price of a recently made car was 2，050in 1950，2，740 in 1960 and(2)4，750 in 1975．During this period America car

manufacturers set about(3)their products and work efficiency．As a result，the yearly

income of the(4)family increased from 1950 to 1975 faster than the price of cars．For this reason(5)，a new car takes a smaller(6)of a family’s total earnings today．

In l95 1 proportionally it took 8．1 months of an average family’s(7)to buy a the car．

In l962 a new car(8)8．3 of a family’s annual earnings．By l975 it only took 4 months’income．In addition．the l975 cars were technically(9)to models from previous years．The influence of the automobile extends throughout the economy(10)the car：important toAmericans．Americans spend more money to keep their ears running on than any other item．

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