unions听力原文nearly 100 yeaes ago
Test l. Cars in the F-uture
      As big cars cause imny problems, such as pollution, slrortage of parking space,
crowded traffic. scienLisls are now trying to design some sruall cars that may some day
replace today's big automobiles. If more people begin to drive such cars in the future,
there will be less air pollution  There will also be more space for parking cars in cities,
unions专四听力原文and the streets will be less crowded. Three such cars can fit in the space that is now
needed for one car of the usual size. The little cars will cost much less to own and to
drive.  Driving will be safe r as  these cars can only g0 60 kilo meters per ho ur.
    Tlre cars of the future will be fine for driving aroiurd the ciy. However, they will not
be suitable fi)r long Lrips. because tl)ese cars by petrol can only g0 450 kilometers before
needing to stop for refucling.

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