[audioFiles]audio_ezf_m_0217(20102)[/audioFiles]

游客2024-10-06 49

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答案                                     The Interstate Highway System
   In the United States it is possible to drive more than four thousand kilometers/ from the east coast on the Atlantic Ocean to the west coast on the Pacific Ocean./ You can also drive more than two thousand kilometers/ from near the Canadian border south to the Mexican border./
   You can drive these distances on wide, safe roads/ that have no traffic signals or stop signs./ In fact, if you did not have to stop for gasoline or sleep,/ you could drive almost anywhere in the United States without stopping at all./
   This is possible because of the Interstate Highway system./ This system has almost seventy thousand kilometers of roads./ It crosses more than fifty-five thousand bridges/ and can be found in forty-nine of America’s fifty states./
   The Interstate Highway system is usually two roads, one in each direction,/ separated by an area that is planted with grass and trees./ Each road holds two lines of cars that can travel at speeds between/ one hundred and one hundred twenty kilometers an hour./
   The Interstate Highway system has been an important part/ of the nation’s economic growth during the past forty years./ Experts believe that trucks using the system/ carry about seventy-five percent of all products that are sold./ Jobs and new businesses have been created near the busy Interstate Highways all across the United States./ These include hotels, motels, eating places,/ gasoline stations and shopping centers./

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