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  3. Transportation has increased each person’ s mobility. Initially, one could walk about 20 miles a day; using a horse or bicycle w

Transportation has increased each person’ s mobility. Initially, one could walk about 20 miles a day; using a horse or bicycle w

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问题     Transportation has increased each person’ s mobility. Initially, one could walk about 20 miles a day; using a horse or bicycle would double or triple(三倍)this range. Today one can travel halfway around the world in a day. Through increased mobility, one’s range of acquaintances can be worldwide. Business and professional interactions also can be on a worldwide basis. With such wide-scale travel opportunities, business and culture will never be the same.
    In terms of sociology, teenage people in the United States view obtaining a driver’ s license as one rite(仪式)of passage toward adulthood(成年). The automobile is a means for them to escape parental supervision(监管). The automobile is blamed for the decline of small towns; persons with cars are able and willing to travel longer distances to the stores and other attractions of larger communities. In the United States, the school bus also led to the decline of small towns because it made it possible to consolidate(合并)numerous small schools. Small villages where small schools were closed went into decline.
    Transportation has increased employment opportunities, because one can travel to reach more potential jobs, and a professional person can cover a wider area. In sparely settled areas, for example, veterinarians(兽医)and physicians make calls using small aircrafts. Transportation activities also provide employment opportunities; working for carriers and shippers, constructing vehicles and roadways, and working in government agencies involved with transportation.
    However, as transportation facilities and opportunities increase, there are some groups left behind. The poor, the feeble(弱者), the elderly, and the disabled are in danger of being ignored because they lack equal access to transportation systems. In many locations in the United States, automobile ownership as well as use is virtually a requirement. Society is uncertain as to what responsibilities it has for transportation systems that can be used by those without automobiles.
    Another negative impact relates to injuries and deaths caused by transportation. While airline crashes the most publicity, highway accidents cause a tremendous number of fatalities(死亡)and injuries. Fortunately, the number is decreasing owing to considerable improvement in auto safety. This includes safer roads, lower speed limits, use of seat belts, and stricter enforcement of laws against driving while drunk.
For American teenagers, a driver’ s license means that______.
选项 A、they are old enough to support their parents
B、they can attend a ceremony, without parental permission
C、they are old enough to break away from their parents
D、they have grown up
答案D
解析
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