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大学英语四级完型填空练习及答案
Before the 20th century the horse provided day to day transportation in the United States. Trains were used only for long-distance transportation.
Today the car is the most popular 67 of transportation in all of the United States. It has completely 68 the horse as a means of everyday transportation. Americans use their car for 69 90 percent of all personal 70 .
