题目内容：
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A．A little creativity is required to encourage people to walk． B．People can use more electric vehicles instead of cars．
C．The green transportation encourages people to use human power or other environmentally friendly means．
D．Biking will do great good to the environment．
E．Bus lanes should be made to attract more bus riders．
F．Pedestrian bridges function as alternatives to biking and walking．
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答案解析：