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