Inthepasttwentyyear的精选

问题详情：Choosethebestanswer(根据短文内容，选择最恰当的*)Inthepasttwentyyears,ridingbicycleshasbecomeincreasinglypopularamongpeopleofallages.BicycleshavelongplayedanimportantpartinthelivesofAmericanyouth...